Merge pull request 'The enrolment seat and node-login rotation contract: a joining machine's first tunnel, add-node and remove-node, two logins per node (issue 774)' (#157) from feat/l3-enrol into main

Claude-Session: https://claude.ai/code/session_01NcbgfJ9Gum47zkFKWRaovL

go/announce/announce.go

@@ -33,7 +33,7 @@ const KeptBucket = "mesh-controller_states-announced"
 var name = regexp.MustCompile(`^[a-z0-9][a-z0-9-]*$`)
 
 // Key is module's key in KeptBucket: the module itself, which must be one plain name, since a module's name is part of
-// its buckets' names (catalogue.StateProblems).
+// its buckets' names (the indexer's judge, novox/hq ADR 0578 §1).
 func Key(module string) (string, error) {
 	if !name.MatchString(module) {
 		return "", fmt.Errorf("announce: %q is not a module that keeps state: lower-case letters, digits and hyphens", module)

go/asks/asks.go

@@ -571,3 +571,8 @@ type ProofAnswer struct {
 	Accepted bool   `json:"accepted"`
 	Words    string `json:"words"`
 }
+
+// EngineAsker is the asker name a node's engine asks the operator under (novox/hq ADR 0563 §3, which changes ADR 0259
+// §2 to admit a node's engine as an asker): `node-engine-<node>`, the last token of the by-caller subjects granted to that
+// node's engine account alone, so no engine acts on another node's warrant.
+func EngineAsker(node string) string { return "node-engine-" + node }

go/buildstep/askrun.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"maps"
 	"path"
 	"slices"
 	"sort"
@@ -24,7 +25,7 @@ type StepFunc func(ctx context.Context, args map[string]any) (any, error)
 // AskSteps are the step tools a build module runs an ask with. Copy is the image module's alone; Digest the Go module's.
 type AskSteps struct {
 	Fetch, Build, Copy, Digest, Test StepFunc
-	// Toolchain is the toolchain the module builds with now; a build ask naming another is refused. Nil checks nothing
+	// Toolchain is the toolchain the module builds with now; a build ask naming another is declined (Declining). Nil checks nothing
 	// (an image or an archive names none).
 	Toolchain func(ctx context.Context) (delivery.ToolchainUsed, error)
 	// Kept looks up a kept verdict by level and digest (the checker's kept bucket, delivery.KeptKey): whether one is
@@ -42,14 +43,30 @@ type AskSteps struct {
 // RunAsk runs ask's job with steps and answers a delivery.BuildAnswer or a delivery.CheckAnswer.
 func RunAsk(ctx context.Context, steps AskSteps, ask delivery.StepAsk) (any, error) {
 	if ask.Build != nil {
-		return steps.build(ctx, *ask.Build)
+		job := *ask.Build
+		job.Fetch = withPackages(job.Fetch, ask.Packages)
+		return steps.build(ctx, job)
 	}
 	if ask.Check != nil {
-		return steps.check(ctx, *ask.Check)
+		job := *ask.Check
+		job.Fetch = withPackages(job.Fetch, ask.Packages)
+		return steps.check(ctx, job)
 	}
 	return nil, Refuse("the ask %s holds no job", ask.ID)
 }
 
+// withPackages is the fetch's arguments with the ask's package versions (novox/hq ADR 0573 §2), which the build module
+// writes into the workspace it fetches; a copy, so the ask is left as it was. An ask with none, or a copy alone that
+// fetches nothing, is left as it is.
+func withPackages(fetch map[string]any, packages delivery.PackageVersions) map[string]any {
+	if len(packages) == 0 || fetch == nil {
+		return fetch
+	}
+	out := maps.Clone(fetch)
+	out["packages"] = maps.Clone(packages)
+	return out
+}
+
 func raw(v any) (json.RawMessage, error) {
 	if r, ok := v.(json.RawMessage); ok {
 		return r, nil
@@ -90,19 +107,32 @@ func (s AskSteps) fetch(ctx context.Context, args map[string]any) (json.RawMessa
 	return r, f, nil
 }
 
+// onToolchain is the toolchain this node builds with when the ask names one and this module reports its own, nil when
+// either is absent. A node on another toolchain than the ask names answers a Declining: it is not on the agreed one and
+// sits out, for a node that is to take the ask (novox/hq ADR 0584 clause 2).
+func (s AskSteps) onToolchain(ctx context.Context, want *delivery.ToolchainUsed) (*delivery.ToolchainUsed, error) {
+	if want == nil || s.Toolchain == nil {
+		return nil, nil
+	}
+	tc, err := s.Toolchain(ctx)
+	if err != nil {
+		return nil, err
+	}
+	if tc.Version != want.Version || tc.Recipe != want.Recipe {
+		return nil, &Declining{Lacks: []string{fmt.Sprintf("the agreed toolchain %s (recipe %s)", want.Version, want.Recipe)},
+			Text: fmt.Sprintf("the ask is for %s (recipe %s) and this node builds with %s (recipe %s): it sits out, and the ask is left to a node on the agreed toolchain",
+				want.Version, want.Recipe, tc.Version, tc.Recipe)}
+	}
+	return &tc, nil
+}
+
 func (s AskSteps) build(ctx context.Context, job delivery.BuildJob) (any, error) {
 	answer := delivery.BuildAnswer{}
-	if job.Toolchain != nil && s.Toolchain != nil {
-		tc, err := s.Toolchain(ctx)
-		if err != nil {
-			return nil, err
-		}
-		if tc.Version != job.Toolchain.Version || tc.Recipe != job.Toolchain.Recipe {
-			return nil, Refuse("the ask is for %s (recipe %s) and this node builds with %s (recipe %s)",
-				job.Toolchain.Version, job.Toolchain.Recipe, tc.Version, tc.Recipe)
-		}
-		answer.Toolchain = &tc
+	tc, err := s.onToolchain(ctx, job.Toolchain)
+	if err != nil {
+		return nil, err
 	}
+	answer.Toolchain = tc
 	var f fetched
 	defer func() { s.release(f.Workspace) }()
 	for _, a := range job.Artifacts {
@@ -164,6 +194,9 @@ func (s AskSteps) build(ctx context.Context, job delivery.BuildJob) (any, error)
 }
 
 func (s AskSteps) check(ctx context.Context, job delivery.CheckJob) (any, error) {
+	if _, err := s.onToolchain(ctx, job.Toolchain); err != nil {
+		return nil, err
+	}
 	r, f, err := s.fetch(ctx, job.Fetch)
 	if err != nil {
 		return nil, err
@@ -200,6 +233,9 @@ func (s AskSteps) level(ctx context.Context, job delivery.CheckJob, level string
 		if runner != "" {
 			args["runner"] = runner
 		}
+		if len(job.NodeNames) > 0 {
+			args[delivery.NodeNamesArg] = job.NodeNames // the names check's (ADR 0567 §12)
+		}
 		return args
 	}
 	test := func(args map[string]any) (bool, error) {
@@ -225,8 +261,10 @@ func (s AskSteps) level(ctx context.Context, job delivery.CheckJob, level string
 		_ = json.Unmarshal(r, &t)
 		return t.Passed, nil
 	}
-	// Every test step of the level runs, also after one that did not pass, so one check names every failing test of the
-	// level and not only the first (issue 1921); the level as a whole passes only when each of its steps did.
+	// The packages (or Node directories) whose tests the change touches run first, and a failure among them ends the level
+	// there, so a change's own failing test is answered without the rest of the suite (issue 1289; ADR 0444). Past them every
+	// test step of the level runs, also after one that did not pass, so one check names every failing test of the rest of
+	// the level and not only the first (issue 1921); the level passes only when each of its steps did.
 	all := true
 	if s.Digest == nil {
 		// A module with no digest (Node) tests each module directory of the tree, those whose tests changed first.
@@ -241,6 +279,9 @@ func (s AskSteps) level(ctx context.Context, job delivery.CheckJob, level string
 				}
 				all = all && passed
 			}
+			if !all {
+				return false, nil // the change's own tests failed: the others are not run (issue 1289)
+			}
 		}
 		return all, nil
 	}
@@ -276,7 +317,10 @@ func (s AskSteps) level(ctx context.Context, job delivery.CheckJob, level string
 		if err != nil {
 			return false, fmt.Errorf("the %s level: %w", level, err)
 		}
-		all = all && passed // the packages left still run (issue 1921)
+		all = all && passed // past the change's own packages the others still run (issue 1921)
+		if priority && !all {
+			return false, nil // the change's own tests failed: the others are not run (issue 1289)
+		}
 	}
 	return all, nil
 }

go/buildstep/askrun_test.go

@@ -74,15 +74,21 @@ func TestRunAskBuilds(t *testing.T) {
 	steps := r.steps()
 	var released []string
 	steps.Release = func(ws string) error { released = append(released, ws); return nil }
-	out, err := RunAsk(context.Background(), steps, ask(delivery.BuildJob{Module: "m", Path: "modules/m", Publish: true,
+	// Issue 1585: the ask's package versions reach the fetch, and the ask's own fetch arguments stay as they were.
+	a := ask(delivery.BuildJob{Module: "m", Path: "modules/m", Publish: true,
 		Fetch:     map[string]any{"repository": "novox/x", "commit": runCommit},
-		Artifacts: []delivery.AskArtifact{{Artifact: "base", From: "registry/b@sha256:00"}, {Artifact: "bundle"}, {Artifact: "lib"}}}))
+		Artifacts: []delivery.AskArtifact{{Artifact: "base", From: "registry/b@sha256:00"}, {Artifact: "bundle"}, {Artifact: "lib"}}})
+	a.Packages = delivery.PackageVersions{"git.novox.be/novox/mesh-sdk/go": runCommit}
+	out, err := RunAsk(context.Background(), steps, a)
 	if err != nil {
 		t.Fatal(err)
 	}
+	if _, put := a.Build.Fetch["packages"]; put {
+		t.Error("the ask's fetch arguments were changed")
+	}
 	got := strings.Join(r.calls, "\n")
 	want := `copy {"artifact":"base","from":"registry/b@sha256:00","module":"m"}
-fetch {"commit":"` + runCommit + `","repository":"novox/x"}
+fetch {"commit":"` + runCommit + `","packages":{"git.novox.be/novox/mesh-sdk/go":"` + runCommit + `"},"repository":"novox/x"}
 build {"artifact":"bundle","module":"modules/m","publish":true,"workspace":"/w/1"}
 build {"artifact":"lib","module":"modules/m","publish":true,"workspace":"/w/1"}`
 	if got != want {
@@ -91,13 +97,13 @@ build {"artifact":"lib","module":"modules/m","publish":true,"workspace":"/w/1"}`
 	if len(released) != 1 || released[0] != "/w/1" {
 		t.Errorf("released %v, want the one workspace", released)
 	}
-	a := out.(delivery.BuildAnswer)
-	if len(a.Artifacts) != 3 || a.Artifacts[1].Reference != "artifact-store://bundle" {
-		t.Fatalf("answer %+v", a)
+	answer := out.(delivery.BuildAnswer)
+	if len(answer.Artifacts) != 3 || answer.Artifacts[1].Reference != "artifact-store://bundle" {
+		t.Fatalf("answer %+v", answer)
 	}
 }
 
-// A build ask for another toolchain is refused, so its step ends refused and the asker reads why.
+// A build ask for another toolchain is declined (ADR 0584 clause 2), so the node sits out and the asker puts it again.
 func TestRunAskRefusesAnotherToolchain(t *testing.T) {
 	r := &recorder{fetch: map[string]any{"workspace": "/w"}}
 	s := r.steps()
@@ -106,14 +112,20 @@ func TestRunAskRefusesAnotherToolchain(t *testing.T) {
 	}
 	_, err := RunAsk(context.Background(), s, ask(delivery.BuildJob{Module: "m", Path: ".", Fetch: map[string]any{"repository": "novox/x", "commit": runCommit},
 		Artifacts: []delivery.AskArtifact{{Artifact: "bundle"}}, Toolchain: &delivery.ToolchainUsed{Version: "go1.26", Recipe: "3"}}))
-	var ref *Refusal
-	if !errors.As(err, &ref) || len(r.calls) != 0 {
+	var dec *Declining
+	if !errors.As(err, &dec) || len(dec.Lacks) != 1 || len(r.calls) != 0 {
 		t.Fatalf("err %v, calls %v", err, r.calls)
 	}
+	// A check ask names the toolchain too (ADR 0584), and a node on another declines it before it fetches.
+	_, err = RunAsk(context.Background(), s, ask(delivery.CheckJob{Fetch: map[string]any{"repository": "novox/x", "commit": runCommit}, Levels: []string{delivery.LevelUnit},
+		Toolchain: &delivery.ToolchainUsed{Version: "go1.26", Recipe: "3"}}))
+	if !errors.As(err, &dec) || len(r.calls) != 0 {
+		t.Fatalf("a check ask: err %v, calls %v", err, r.calls)
+	}
 }
 
 // 1887/A3, A5a: a check ask runs the levels of one check after one fetch: it digests the unit level, takes the kept
-// verdicts, tests the packages whose tests changed first, then the rest also after a failure (issue 1921), and runs no
+// verdicts, tests the packages whose tests changed first and, when one of them fails, no other (issue 1289), and runs no
 // level after one that did not pass (ADR 0484 clause 13).
 func TestRunAskChecksTheLevelsOfOneCheck(t *testing.T) {
 	r := &recorder{
@@ -129,8 +141,7 @@ func TestRunAskChecksTheLevelsOfOneCheck(t *testing.T) {
 	got := strings.Join(r.calls, "\n")
 	want := `fetch {"base":"` + runCommit + `","commit":"` + runCommit + `","repository":"novox/x"}
 digest {"level":"unit","workspace":"/w"}
-test {"level":"unit","packages":["x/pkg/b"],"workspace":"/w"}
-test {"level":"unit","packages":["x/pkg/a"],"workspace":"/w"}`
+test {"level":"unit","packages":["x/pkg/b"],"workspace":"/w"}`
 	if got != want {
 		t.Fatalf("calls:\n%s\nwant:\n%s", got, want)
 	}
@@ -139,10 +150,19 @@ test {"level":"unit","packages":["x/pkg/a"],"workspace":"/w"}`
 		t.Fatalf("levels %+v, want the unit level alone", a.Levels)
 	}
 	u := a.Levels[0]
-	if u.Level != delivery.LevelUnit || len(u.Kept) != 1 || u.Kept[0].Package != "x/pkg/k" || u.Kept[0].Tests != 7 || len(u.Tests) != 2 || u.Digest == nil {
+	if u.Level != delivery.LevelUnit || len(u.Kept) != 1 || u.Kept[0].Package != "x/pkg/k" || u.Kept[0].Tests != 7 || len(u.Tests) != 1 || u.Digest == nil {
 		t.Fatalf("the unit level %+v", u)
 	}
 
+	// ADR 0567 §12: a check's node names reach the digest and test tools, for the names check (a kept verdict misses when
+	// they change).
+	r.calls = nil
+	if _, err := RunAsk(context.Background(), r.steps(), ask(delivery.CheckJob{Levels: []string{delivery.LevelUnit}, NodeNames: []string{"anchor"},
+		Fetch: map[string]any{"repository": "novox/x", "commit": runCommit}})); err != nil || !strings.Contains(strings.Join(r.calls, "\n"), `digest {"level":"unit","node-names":["anchor"]`) ||
+		!strings.Contains(strings.Join(r.calls, "\n"), `test {"level":"unit","node-names":["anchor"]`) {
+		t.Fatalf("the node names are not handed to the digest and test tools: %v, %v", r.calls, err)
+	}
+
 	// Issue 890/AC2: a package declaring node-build-node is not tested on a node that lacks it but named unmet, and is
 	// tested on a node that has it.
 	for _, has := range []bool{false, true} {
@@ -245,41 +265,64 @@ func TestRunAskChecksNodeModulesAndConflicts(t *testing.T) {
 	}
 }
 
-// Issue 1921: a failure in the packages whose tests changed does not stop the level: the other packages still run, so two
-// failing packages, one changed and one not, are two test results of the one level, and the level does not pass. A Node
-// check runs every module directory after one fails too.
-func TestRunAskRunsEveryPackageAfterAFailure(t *testing.T) {
-	r := &recorder{
-		fetch:   map[string]any{"workspace": "/w", "changed": []string{"pkg/b/b_test.go"}},
-		digests: map[string]string{"x/pkg/a": "d-a", "x/pkg/b": "d-b"},
-		tests:   map[string]bool{"x/pkg/a": false, "x/pkg/b": false},
-	}
-	out, err := RunAsk(context.Background(), r.steps(), ask(delivery.CheckJob{Levels: []string{delivery.LevelIntegration, delivery.LevelUnit},
-		Fetch: map[string]any{"repository": "novox/x", "commit": runCommit}}))
-	if err != nil {
-		t.Fatal(err)
-	}
-	a := out.(delivery.CheckAnswer)
-	if len(a.Levels) != 1 || len(a.Levels[0].Tests) != 2 {
-		t.Fatalf("levels %+v, want the one level with both packages' results", a.Levels)
-	}
-	for i, raw := range a.Levels[0].Tests {
-		var res struct{ Passed bool }
-		if err := json.Unmarshal(raw, &res); err != nil || res.Passed {
-			t.Errorf("result %d %s, want a failure", i, raw)
+// Issue 1289: a failure in the packages whose tests changed ends the level there, the others are not run, and no later level
+// runs. Issue 1921: past the change's own packages every package still runs, so two failing packages none of which the
+// change touched are two test results of the one level. A Node check does the same with its module directories.
+func TestRunAskStopsAtTheChangesOwnFailureAndRunsTheRestAfterOthers(t *testing.T) {
+	for _, row := range []struct {
+		name    string
+		changed []string
+		tests   map[string]bool
+		want    []string // the packages tested, in order
+	}{
+		{"the change's own test fails: nothing else runs", []string{"pkg/b/b_test.go"}, map[string]bool{"x/pkg/a": false, "x/pkg/b": false}, []string{"x/pkg/b"}},
+		{"the change's own test passes: the rest runs, also after a failure", []string{"pkg/b/b_test.go"}, map[string]bool{"x/pkg/a": false, "x/pkg/b": true, "x/pkg/c": false}, []string{"x/pkg/b", "x/pkg/a x/pkg/c"}},
+		{"no test changed: every failure is named", nil, map[string]bool{"x/pkg/a": false, "x/pkg/b": false}, []string{"x/pkg/a x/pkg/b"}},
+	} {
+		r := &recorder{fetch: map[string]any{"workspace": "/w", "changed": row.changed}, tests: row.tests,
+			digests: map[string]string{"x/pkg/a": "d-a", "x/pkg/b": "d-b"}}
+		if _, ok := row.tests["x/pkg/c"]; ok {
+			r.digests["x/pkg/c"] = "d-c"
+		}
+		out, err := RunAsk(context.Background(), r.steps(), ask(delivery.CheckJob{Levels: []string{delivery.LevelUnit, delivery.LevelIntegration},
+			Fetch: map[string]any{"repository": "novox/x", "commit": runCommit}}))
+		if err != nil {
+			t.Fatal(err)
+		}
+		var got []string
+		for _, c := range r.calls[1:] {
+			if strings.HasPrefix(c, "test ") {
+				var a struct{ Packages []string }
+				_ = json.Unmarshal([]byte(strings.TrimPrefix(c, "test ")), &a)
+				got = append(got, strings.Join(a.Packages, " "))
+			}
+		}
+		// the passing row goes on to the integration level, which tests the same packages again; the first level is what is judged
+		if n := len(row.want); len(got) < n || fmt.Sprint(got[:n]) != fmt.Sprint(row.want) {
+			t.Errorf("%s: tested %v, want %v first", row.name, got, row.want)
+		}
+		a := out.(delivery.CheckAnswer)
+		failed := false
+		for _, raw := range a.Levels[0].Tests {
+			var res struct{ Passed bool }
+			_ = json.Unmarshal(raw, &res)
+			failed = failed || !res.Passed
+		}
+		if failed && (len(a.Levels) != 1 || len(got) != len(row.want)) {
+			t.Errorf("%s: a failed level went on: levels %d, tests %v", row.name, len(a.Levels), got)
 		}
 	}
 
-	r = &recorder{fetch: map[string]any{"workspace": "/w", "modules": []string{"a", "b"}, "changed": []string{"b/test/x.test.ts"}},
+	r := &recorder{fetch: map[string]any{"workspace": "/w", "modules": []string{"a", "b"}, "changed": []string{"b/test/x.test.ts"}},
 		tests: map[string]bool{"a": true, "b": false}}
 	s := r.steps()
 	s.Digest = nil
-	out, err = RunAsk(context.Background(), s, ask(delivery.CheckJob{Levels: []string{delivery.LevelUnit, delivery.LevelIntegration},
+	out, err := RunAsk(context.Background(), s, ask(delivery.CheckJob{Levels: []string{delivery.LevelUnit, delivery.LevelIntegration},
 		Fetch: map[string]any{"repository": "novox/x", "commit": runCommit}}))
 	if err != nil {
 		t.Fatal(err)
 	}
-	if a := out.(delivery.CheckAnswer); len(r.calls) != 3 || len(a.Levels) != 1 || len(a.Levels[0].Tests) != 2 {
-		t.Fatalf("calls %v, levels %+v: want both directories of the unit level and no integration level", r.calls, a.Levels)
+	if a := out.(delivery.CheckAnswer); len(r.calls) != 2 || len(a.Levels) != 1 || len(a.Levels[0].Tests) != 1 {
+		t.Fatalf("calls %v, levels %+v: want the changed directory b alone and no integration level", r.calls, a.Levels)
 	}
 }

go/buildstep/buildhours.go

@@ -8,14 +8,15 @@ import (
 	"time"
 )
 
-// **A node may build only within its build hours** (the operator, 2026-10-26 21:18: "we should only use g14 as a builder
-// outside office hours", "from 18 o'clock until 6 in the morning"). A build module's `build-hours` setting names, per
-// node, the window in the node's local time in which it takes asks; outside it the capacity judged by is 0: steps running
-// finish, no new one is taken. A node it does not name, or an empty setting, builds at any hour. The puller judges it at
-// every judgement and wakes on one timer to the window's next edge (a clock edge, not a poll of another part).
+// **A node may build only within its build hours** (the operator, 2026-10-26 21:18: the laptop builds only outside
+// office hours, "from 18 o'clock until 6 in the morning"). A build module's `build-hours` setting is the node's window
+// in its local time, a config value set on each node's layer of mesh-config (ADR 0567 §12: no repository names a node);
+// outside it the capacity judged by is 0: steps running finish, no new one is taken. An empty value builds at any hour.
+// The puller judges it at every judgement and wakes on one timer to the window's next edge (a clock edge, not a poll of
+// another part).
 
-// BuildHoursSetting is the build modules' setting of the nodes' build windows: `<node>=HH:MM-HH:MM` pairs separated by
-// commas, in the node's local time; an end before its start crosses midnight (g14=18:00-06:00).
+// BuildHoursSetting is the build modules' setting of the node's build window: HH:MM-HH:MM in the node's local time; an
+// end before its start crosses midnight (18:00-06:00).
 const BuildHoursSetting = "build-hours"
 
 // BuildWindow is one node's build hours: minutes after local midnight, Start inclusive, End exclusive.
@@ -51,35 +52,28 @@ func (w BuildWindow) NextEdge(t time.Time) time.Time {
 	return next
 }
 
-// ParseBuildHours is node's window in a build-hours setting: nil when the setting is empty or does not name the node.
-func ParseBuildHours(setting, node string) (*BuildWindow, error) {
-	var found *BuildWindow
-	for _, pair := range strings.Split(setting, ",") {
-		pair = strings.TrimSpace(pair)
-		if pair == "" {
-			continue
-		}
-		name, span, ok := strings.Cut(pair, "=")
-		from, to, ok2 := strings.Cut(span, "-")
-		if !ok || !ok2 || strings.TrimSpace(name) == "" {
-			return nil, fmt.Errorf("the build hours %q: %q is not <node>=HH:MM-HH:MM", setting, pair)
-		}
-		start, err := minuteOf(from)
-		if err != nil {
-			return nil, fmt.Errorf("the build hours %q: %v", setting, err)
-		}
-		end, err := minuteOf(to)
-		if err != nil {
-			return nil, fmt.Errorf("the build hours %q: %v", setting, err)
-		}
-		if start == end {
-			return nil, fmt.Errorf("the build hours %q: %s opens and closes at the same minute", setting, pair)
-		}
-		if strings.TrimSpace(name) == node {
-			found = &BuildWindow{Start: start, End: end}
-		}
+// ParseBuildWindow reads a build-hours value, HH:MM-HH:MM: nil when it is empty.
+func ParseBuildWindow(setting string) (*BuildWindow, error) {
+	setting = strings.TrimSpace(setting)
+	if setting == "" {
+		return nil, nil
 	}
-	return found, nil
+	from, to, ok := strings.Cut(setting, "-")
+	if !ok {
+		return nil, fmt.Errorf("the build hours %q are not HH:MM-HH:MM", setting)
+	}
+	start, err := minuteOf(from)
+	if err != nil {
+		return nil, fmt.Errorf("the build hours %q: %v", setting, err)
+	}
+	end, err := minuteOf(to)
+	if err != nil {
+		return nil, fmt.Errorf("the build hours %q: %v", setting, err)
+	}
+	if start == end {
+		return nil, fmt.Errorf("the build hours %q open and close at the same minute", setting)
+	}
+	return &BuildWindow{Start: start, End: end}, nil
 }
 
 // minuteOf reads HH:MM as minutes after midnight.
@@ -92,7 +86,7 @@ func minuteOf(s string) (int, error) {
 	return h*60 + m, nil
 }
 
-// NodeBuildHours is node's build window, read from the module's settings file at path at every call, and why it is
+// NodeBuildHours is the node's build window, read from the module's settings file at path at every call, and why it is
 // none when the value cannot be read. No path, no file value or an empty one is no window and no fault. A value that
 // cannot be read is no window too, so the node builds at any hour; the setting is a preference of hours, not a safety
 // bound (a node that must never build has capacity 0). It is loud: the fault is said once per distinct fault through
@@ -125,7 +119,7 @@ func NodeBuildHours(path, node string, logf func(string, ...any)) func() (*Build
 		if v, ok := s[BuildHoursSetting]; ok && json.Unmarshal(v, &setting) != nil {
 			return fault(fmt.Sprintf("the setting %s %s is not a string", BuildHoursSetting, v))
 		}
-		w, err := ParseBuildHours(setting, node)
+		w, err := ParseBuildWindow(setting)
 		if err != nil {
 			return fault(err.Error())
 		}

go/buildstep/capacity.go

@@ -4,45 +4,25 @@ import (
 	"encoding/json"
 	"fmt"
 	"os"
-
-	"git.novox.be/novox/mesh-sdk/go/delivery/buildrun"
 )
 
-// CapacitySetting is the build modules' setting of each node's build capacity (novox/hq ADR 0525 §5): `<node>=<asks at
-// once>` pairs separated by commas, as the builder's was (ADR 0485 §1). Each build module declares it with
-// DefaultCapacities as its default, and the controller lays it into the module's settings file.
+// CapacitySetting is the build modules' setting of the node's build capacity (novox/hq ADR 0525 §5, ADR 0567 §12): how
+// many asks the node takes at once, an integer config value set on each node's layer of mesh-config. No repository names
+// a node: each build module declares it with the default 0, which pulls nothing, and the controller (or mesh-config)
+// lays the node's value into the module's settings file.
 const CapacitySetting = "capacity"
 
-// DefaultCapacities is the setting's default, the builder's before R4g: the control-node (novox) and the laptop (g14)
-// build nothing.
-const DefaultCapacities = "shanks=3,ace=2,g14=0,novox=0"
-
-// NodeCapacity is node's build capacity, read from the module's settings file at path at every call, so a change takes
-// effect at the next pull; with no path it reads fallback. A node the setting does not name runs one ask at a time (as
-// the builder's did). A file or a setting that cannot be read gives 0 and says why: pulling on a setting nobody can read
-// could build on a node that must not.
-func NodeCapacity(path, fallback, node string, logf func(string, ...any)) func() int {
+// NodeCapacity is the node's build capacity, read from the module's settings file at path at every call, so a change
+// takes effect at the next pull. No path, no file value, or a value that is not a whole number of at least 0 gives 0 and
+// a value that cannot be read says why: pulling on a setting nobody can read could build on a node that must not.
+func NodeCapacity(path, node string, logf func(string, ...any)) func() int {
 	say := func(format string, args ...any) {
 		if logf != nil {
 			logf(format, args...)
 		}
 	}
 	return func() int {
-		setting := fallback
-		if path != "" {
-			raw, err := os.ReadFile(path)
-			if err != nil {
-				say("the build capacity cannot be read, so %s pulls nothing: %v", node, err)
-				return 0
-			}
-			var s map[string]any
-			if err := json.Unmarshal(raw, &s); err != nil {
-				say("the settings file %s is not JSON, so %s pulls nothing: %v", path, node, err)
-				return 0
-			}
-			setting, _ = s[CapacitySetting].(string)
-		}
-		n, err := capacityOf(setting, node)
+		n, err := ReadCapacity(path)
 		if err != nil {
 			say("%v, so %s pulls nothing", err, node)
 			return 0
@@ -51,11 +31,31 @@ func NodeCapacity(path, fallback, node string, logf func(string, ...any)) func()
 	}
 }
 
-// capacityOf is node's capacity in a setting's `<node>=<asks>` pairs: DefaultCapacity for a node it does not name.
-func capacityOf(setting, node string) (int, error) {
-	caps, err := buildrun.ParseCapacity(setting)
-	if err != nil {
-		return 0, fmt.Errorf("the build capacity: %w", err)
+// ReadCapacity is the capacity the settings file at path holds, and why it cannot be read when it cannot (then 0).
+func ReadCapacity(path string) (int, error) {
+	if path == "" {
+		return 0, nil
 	}
-	return (&buildrun.Places{Capacity: caps}).CapacityOf(node), nil
+	raw, err := os.ReadFile(path)
+	if err != nil {
+		return 0, fmt.Errorf("the build capacity cannot be read: %w", err)
+	}
+	var s map[string]json.RawMessage
+	if err := json.Unmarshal(raw, &s); err != nil {
+		return 0, fmt.Errorf("the settings file %s is not JSON: %w", path, err)
+	}
+	return capacityOf(s[CapacitySetting])
+}
+
+// capacityOf is the capacity a config value holds: absent or null is 0; anything but a whole number of at least 0 is
+// refused, naming it.
+func capacityOf(value json.RawMessage) (int, error) {
+	if len(value) == 0 || string(value) == "null" {
+		return 0, nil
+	}
+	var n int
+	if err := json.Unmarshal(value, &n); err != nil || n < 0 {
+		return 0, fmt.Errorf("the build capacity %s is not a whole number of asks at once, 0 or more", value)
+	}
+	return n, nil
 }

go/buildstep/capacity_cpu.go

@@ -14,7 +14,7 @@ import (
 )
 
 // **A build seat's capacity follows the CPU its node gives builds** (issue 1806's follow-up; issue 1890, 2026-10-26
-// 19:41: under the 50 % cap shanks' mesh-build-go kept capacity 3, three full mesh-catalog checks shared 12 cores, and
+// 19:41: under the 50 % cap the workstation's mesh-build-go kept capacity 3, three full mesh-catalog checks shared 12 cores, and
 // each step ran past the 30-minute step bound with no test run). The configured capacity is an upper bound; the node's
 // build slice bounds it again by the cores a step needs: floor(the slice's quota in cores / cores-per-step), one at
 // least. The quota is read live from the cgroup at every judgement, so a changed cap is followed at the next take
@@ -27,7 +27,7 @@ import (
 const CoresPerStepSetting = "cores-per-step"
 
 // DefaultCoresPerStep are the build modules' defaults by language, from measured steps (2026-10-26): a full mesh-catalog
-// check on mesh-build-go takes what it is given (three at once took 965 % of shanks' 1200 % slice, about 4 cores each,
+// check on mesh-build-go takes what it is given (three at once took 965 % of the workstation's 1200 % slice, about 4 cores each,
 // and ran past the 30-minute step bound), so a Go step is given 6, half again what starved; a Node step (tsc, esbuild, a
 // test runner: median 15 s) and an image build (buildah, its RUN lines mostly fetches) need 2.
 var DefaultCoresPerStep = map[string]float64{delivery.AskGo: 6, delivery.AskNode: 2, delivery.AskImage: 2}

go/buildstep/capacity_test.go

@@ -10,39 +10,26 @@ import (
 
 // 1887/A7: the node's build capacity is the build module's setting, read at every pull: the control-node at 0 pulls
 // nothing, a change takes effect at the next read, and a setting that cannot be read pulls nothing.
-func TestNodeCapacity(t *testing.T) {
-	if got := NodeCapacity("", DefaultCapacities, "novox", nil)(); got != 0 {
-		t.Errorf("novox = %d by default, want 0", got)
-	}
-	if got := NodeCapacity("", DefaultCapacities, "shanks", nil)(); got != 3 {
-		t.Errorf("shanks = %d by default, want 3", got)
-	}
-	file := filepath.Join(t.TempDir(), "settings.json")
-	os.WriteFile(file, []byte(`{"capacity":"shanks=1,ace=2"}`), 0o600)
-	capacity := NodeCapacity(file, DefaultCapacities, "shanks", nil)
-	if got := capacity(); got != 1 {
-		t.Errorf("shanks = %d from the file, want 1", got)
-	}
-	os.WriteFile(file, []byte(`{"capacity":"shanks=4"}`), 0o600)
-	if got := capacity(); got != 4 {
-		t.Errorf("shanks = %d after the change, want 4", got)
-	}
-	if got := NodeCapacity(file, "", "pi", nil)(); got != 1 {
-		t.Errorf("a node not named = %d, want 1", got)
-	}
-	os.WriteFile(file, []byte(`{"capacity":"shanks=lots"}`), 0o600)
-	if got := capacity(); got != 0 {
-		t.Errorf("an unreadable setting = %d, want 0", got)
-	}
-	if got := NodeCapacity(filepath.Join(t.TempDir(), "none"), DefaultCapacities, "shanks", nil)(); got != 0 {
-		t.Errorf("a missing file = %d, want 0", got)
-	}
-}
-
 // ADR 0553 §4: a step's threads are the composer's share over the module's own capacity; without the word, none. And
 // issue 1806's follow-up: the capacity judged by is the configured one bounded by the build slice's cores over the cores
 // a step needs (the three build nodes as they stand on 2026-10-26), and cores-per-step is read from the settings file.
-func TestNodeLimitsAndTheCPUBound(t *testing.T) {
+func TestNodeCapacityAndLimits(t *testing.T) {
+	// ADR 0567 §12: the capacity is the node's integer, its default 0, and no default names a node.
+	if got := NodeCapacity("", "laptop", nil)(); got != 0 {
+		t.Errorf("no settings file = %d, want 0", got)
+	}
+	file := filepath.Join(t.TempDir(), "settings.json")
+	capacity := NodeCapacity(file, "anchor", nil)
+	for value, want := range map[string]int{`{"capacity":1}`: 1, `{"capacity":4}`: 4, `{}`: 0, `{"capacity":null}`: 0,
+		`{"capacity":"anchor=3"}`: 0, `{"capacity":-1}`: 0, `{"capacity":1.5}`: 0} {
+		os.WriteFile(file, []byte(value), 0o600)
+		if got := capacity(); got != want {
+			t.Errorf("%s = %d, want %d", value, got, want)
+		}
+	}
+	if got := NodeCapacity(filepath.Join(t.TempDir(), "none"), "anchor", nil)(); got != 0 {
+		t.Errorf("a missing file = %d, want 0", got)
+	}
 	t.Setenv("MESH_BUILD_CPU_SHARE", "")
 	if l := NodeLimits(3); l.Threads != 0 || l.Slots != 3 {
 		t.Errorf("without the word: %+v", l)
@@ -71,13 +58,13 @@ func TestNodeLimitsAndTheCPUBound(t *testing.T) {
 			t.Errorf("%s: %+v, want effective %d, by CPU %d", c.name, got, c.effective, c.byCPU)
 		}
 	}
-	file := filepath.Join(t.TempDir(), "settings.json")
+	file = filepath.Join(t.TempDir(), "settings.json")
 	var said []string
 	cores := NodeCoresPerStep(file, 6, func(f string, a ...any) { said = append(said, f) })
 	for _, c := range []struct {
 		file string
 		want float64
-	}{{`{"capacity":"shanks=2"}`, 6}, {`{"cores-per-step":4}`, 4}, {`{"cores-per-step":"3.5"}`, 3.5}, {`{"cores-per-step":0}`, 6}, {`{"cores-per-step":0}`, 6}} {
+	}{{`{"capacity":2}`, 6}, {`{"cores-per-step":4}`, 4}, {`{"cores-per-step":"3.5"}`, 3.5}, {`{"cores-per-step":0}`, 6}, {`{"cores-per-step":0}`, 6}} {
 		os.WriteFile(file, []byte(c.file), 0o600)
 		if got := cores(); got != c.want {
 			t.Errorf("cores-per-step from %s = %g, want %g", c.file, got, c.want)
@@ -89,6 +76,8 @@ func TestNodeLimitsAndTheCPUBound(t *testing.T) {
 
 	// The operator, 2026-10-26 21:18: g14 builds only from 18:00 to 06:00, its local time. Outside its build hours the
 	// capacity judged by is 0, said with the window and when it opens; a node not named, or a bad value, builds at any hour.
+	// And a node its module proves cannot build (ace without /dev/net/tun, 2026-10-28) judges by 0 at every hour, saying
+	// why, so its asks go to a node that can.
 	cet := time.FixedZone("CET", 3600)
 	day := func(hh, mm int) time.Time { return time.Date(2026, 10, 26, hh, mm, 0, 0, cet) }
 	was := now
@@ -99,17 +88,21 @@ func TestNodeLimitsAndTheCPUBound(t *testing.T) {
 		effective           int
 		edge                string // the window's next edge, HH:MM; "" for no window
 		bad                 bool
+		ineligible          string // what the module's Eligible says; "" for eligible
 	}{
-		{"g14 in the office", "g14=18:00-06:00", "g14", day(10, 0), 0, "18:00", false},
-		{"g14 in the evening", "g14=18:00-06:00", "g14", day(18, 0), 2, "06:00", false},
-		{"g14 past midnight", "g14=18:00-06:00", "g14", day(5, 59), 2, "06:00", false},
-		{"g14 at the close", "g14=18:00-06:00", "g14", day(6, 0), 0, "18:00", false},
-		{"a day window", "shanks=09:00-17:30,g14=18:00-06:00", "shanks", day(17, 29), 2, "17:30", false},
-		{"a node not named", "g14=18:00-06:00", "ace", day(10, 0), 2, "", false},
-		{"a bad time", "g14=18:00-6", "g14", day(10, 0), 2, "", true},
-		{"no span", "g14=18:00-18:00", "g14", day(10, 0), 2, "", true},
+		{"the laptop in the office", "18:00-06:00", "laptop", day(10, 0), 0, "18:00", false, ""},
+		{"the laptop in the evening", "18:00-06:00", "laptop", day(18, 0), 2, "06:00", false, ""},
+		{"the laptop past midnight", "18:00-06:00", "laptop", day(5, 59), 2, "06:00", false, ""},
+		{"the laptop at the close", "18:00-06:00", "laptop", day(6, 0), 0, "18:00", false, ""},
+		{"a day window", "09:00-17:30", "anchor", day(17, 29), 2, "17:30", false, ""},
+		{"no window", "", "anchor", day(10, 0), 2, "", false, ""},
+		{"a bad time", "18:00-6", "laptop", day(10, 0), 2, "", true, ""},
+		{"no span", "18:00-18:00", "laptop", day(10, 0), 2, "", true, ""},
+		{"the old form naming a node", "laptop=18:00-06:00", "laptop", day(10, 0), 2, "", true, ""},
+		{"a node without /dev/net/tun", "", "anchor", day(10, 0), 0, "", false, "/dev/net/tun cannot be opened: no such device"},
+		{"not eligible within its hours", "18:00-06:00", "laptop", day(19, 0), 0, "06:00", false, "/dev/net/tun cannot be opened: no such device"},
 	} {
-		w, err := ParseBuildHours(c.setting, c.node)
+		w, err := ParseBuildWindow(c.setting)
 		if (err != nil) != c.bad {
 			t.Errorf("%s: parse %v", c.name, err)
 		}
@@ -124,11 +117,16 @@ func TestNodeLimitsAndTheCPUBound(t *testing.T) {
 		file := filepath.Join(t.TempDir(), "settings.json")
 		os.WriteFile(file, []byte(`{"build-hours":"`+c.setting+`"}`), 0o600)
 		now = func() time.Time { return c.at }
-		p := &Puller{Language: "go", Node: c.node, Capacity: func() int { return 2 }, BuildHours: NodeBuildHours(file, c.node, nil)}
+		p := &Puller{Language: "go", Node: c.node, Capacity: func() int { return 2 }, BuildHours: NodeBuildHours(file, c.node, nil),
+			Eligible: func() string { return c.ineligible }}
 		got := p.CapacityDetail()
-		if got.Effective != c.effective || got.OutsideHours != (c.effective == 0) || (c.effective == 0 && !strings.Contains(got.Why, "outside its build hours 18:00-06:00 CET until 18:00")) {
+		outside := c.effective == 0 && c.ineligible == ""
+		if got.Effective != c.effective || got.OutsideHours != outside || (outside && !strings.Contains(got.Why, "outside its build hours 18:00-06:00 CET until 18:00")) {
 			t.Errorf("%s: %+v, want capacity %d", c.name, got, c.effective)
 		}
+		if got.Ineligible != c.ineligible || (c.ineligible != "" && !strings.HasPrefix(got.Why, "0, not eligible: "+c.ineligible+" (otherwise ")) {
+			t.Errorf("%s: not eligible is not said: %+v", c.name, got)
+		}
 		// A value that cannot be read builds at any hour, loudly: the record names the value and says why.
 		if c.bad && (!strings.Contains(got.BuildHoursFault, c.setting) || !strings.Contains(got.Why, "at any hour, because its build hours cannot be read")) {
 			t.Errorf("%s: a bad value is not said in the record: %+v", c.name, got)

go/buildstep/conformance/captured/README.md

@@ -0,0 +1,73 @@
+# The conformance kit's captured runner output
+
+Every file here is the real output of a test runner, never written by hand (issue 1901: a fixture that agrees with the
+mistake proves the mistake). The toolchains are the build nodes' own, as `mesh-build-go.build_go_toolchains` and
+`mesh-build-node.build_node_toolchains` reported them on 2026-10-26: go1.27.3-X:nodwarf5 on every build node, node
+v26.12.1 (npm 12.2.1) on shanks, novox and g14, and typescript 5.9.3 from mesh-build-node's toolchain/package.json.
+To capture a case again, make its tiny project in a fresh directory as below and run the command shown; the kit's case
+table (conformance.go) says what each failure must say.
+
+## go/ — `go test -json`
+
+- `passfirst.jsonl` and `subtests.jsonl` (2026-10-26, go1.27.3-X:nodwarf5, for issue 1901's thorough fix): in
+  `/tmp/1901k/go/<case>`, `GOTOOLCHAIN=local GOFLAGS=-mod=mod go test -json -count=1 ./... > ../<case>.jsonl 2>&1`.
+  - passfirst: module `example.com/passfirst`, `go 1.26`. Package `a` has `TestTheFirstPackagePasses` (empty). Package `b`
+    has `TestTheSecondPackagePassesFirst` (empty) and `TestTheSecondPackageFails`, which calls
+    `t.Logf("judged against the seat as it stands")` then `t.Fatalf("the seat has 2 holders, want 1")`: a passing package
+    and a passing test before the failing one.
+  - subtests: module `example.com/subtests`; `TestTheTable` runs `t.Run("passes", func(t *testing.T) {})` and
+    `t.Run("fails", func(t *testing.T) { t.Errorf("got 3 machines, want 4") })`: the parent fails only by its subtest.
+- `subpanic.jsonl` (2026-10-26, go1.27.3-X:nodwarf5, review round 1 of issue 1901's fix), the same way: module
+  `example.com/subpanic`; `TestTable` runs `t.Run("passes", func(t *testing.T) {})` and `t.Run("panics", ...)`, which
+  writes to a nil map. go test -json files the subtest's panic under the parent `TestTable`.
+- `logthenfatal.jsonl`, `panicking`, `timeout`, `deeptimeout`, `buildfail`, `exiting`, `killed`, `passthenfail`,
+  `mainexit`, `race`, `racemain` were captured for issue 1901's first and third meetings (2026-10-23 and 2026-10-25,
+  go1.27.3) in mesh-catalog's mesh-build-go (`testdata/captured/go-test-json-*.jsonl`, named there `go-test-json-pkg-<case>`
+  and `go-test-json-log-then-fatal`) and moved here unchanged. From that README: each is the standard output and error of
+  `go test -json -count=1 ./...` (the timeouts with `-timeout 2s`; race and racemain with `-race`, CGO_ENABLED=1) in a
+  throwaway one-file module that fails without a test's own assertion: panicking (a nil map write in TestPanics), timeout
+  (TestWaitsForever sleeps past the timeout), deeptimeout (two parallel tests and sixty blocked goroutines past the
+  timeout, so the goroutine dump pushes the panic line out of the last 4 KB), buildfail (a type error in a test file),
+  exiting (os.Exit(3) in TestExits), killed (TestKilled sends itself SIGKILL), passthenfail (TestMain panics in a
+  goroutine after m.Run passed), mainexit (TestMain exits 2 after m.Run passed: go test prints "PASS" and then
+  "FAIL <pkg>"), race (TestRacesOnTheSeat writes a package variable from itself and a goroutine), racemain (TestMain does
+  so after m.Run passed). logthenfatal is a test `TestThree` in package `x` that logs a line with t.Logf and then fails
+  with a multi-line t.Fatalf naming three subscriptions.
+
+## node/ — `npm test` running `node --test` under the TAP reporter
+
+Captured 2026-10-26 with node v26.12.1 and npm 12.2.1 (`/usr/bin/node`, `/usr/bin/npm`), in `/tmp/1901k/node/<case>`, the
+way mesh-build-node runs a test script:
+
+    PATH=/usr/bin:$PATH NODE_OPTIONS="--test-reporter=tap --test-reporter-destination=/tmp/1901k/node/<case>.tap" \
+      npm test > ../<case>.stdout 2> ../<case>.stderr
+
+`<case>.tap` is the report file, `<case>.console` the stdout followed by the stderr. Each project's package.json is
+`{"name":"<case>","private":true,"type":"module","scripts":{"test":"node --test --experimental-strip-types 'test/*.test.ts'"}}`
+(the script every TypeScript package of the catalogue and the SDK runs), with these test files:
+
+- two-files: `test/a.test.ts` holds `test('passes in the first file', () => {})`; `test/b.test.ts` holds
+  `test('passes in the second file first', () => {})` and `test('fails in the second file', ...)`, which logs
+  `judged against the seat as it stands` and asserts `assert.strictEqual(1 + 1, 3, 'one plus one is not three')`.
+- suite: `test/a.test.ts` has `describe('the seat', ...)` with `it('passes inside', () => {})` and `it('fails inside', ...)`
+  asserting `assert.deepStrictEqual({ holders: 2 }, { holders: 1 })`.
+- crash: `test/a.test.ts` holds `test('passes before the crash', () => {})`; `test/b.test.ts` holds
+  `test('throws after it returned', ...)`, which throws `new Error('the bus closed under the test')` in a `setTimeout` of
+  1 ms, and `test('waits after the throw', ...)`, which waits 50 ms: node fails the file with an uncaught exception.
+- logcrash (review round 1): `test/a.test.ts` holds `test('passes and logs', ...)`, which logs
+  `retrying after Error: the store was not ready yet`; `test/b.test.ts` is crash's. A passing test's console line
+  holding "Error" comes before the crash's own.
+- timeout: `test/a.test.ts` holds `test('passes before the wait', () => {})` and
+  `test('waits for an answer that never comes', { timeout: 200 }, async () => { await new Promise(() => {}); })`.
+- syntax: `test/a.test.ts` holds `test('passes in the first file', () => {})`; `test/b.test.ts` is
+  `import test from 'node:test';` and `test('never loads', () => {` (cut off): the file does not load.
+
+## tsc/ — the type-check
+
+`typeerror.console` (2026-10-26, typescript 5.9.3 under node v26.12.1): in `/tmp/1901k/tsc/typeerror`, `ok.ts` is
+`export const holders: number = 1;` and `seat.ts` is `import { holders } from './ok.js'; export const name: string = holders;`;
+the command is mesh-build-node's type-check line without a tsconfig.json:
+
+    node <typescript>/bin/tsc --noEmit --module NodeNext --moduleResolution NodeNext --target ES2022 --rootDir . ok.ts seat.ts
+
+and the file is its stdout followed by its stderr.

go/buildstep/conformance/captured/go/buildfail.jsonl

@@ -0,0 +1,6 @@
+{"ImportPath":"example.com/buildfail [example.com/buildfail.test]","Action":"build-output","Output":"# example.com/buildfail [example.com/buildfail.test]\n"}
+{"ImportPath":"example.com/buildfail [example.com/buildfail.test]","Action":"build-output","Output":"./p_test.go:5:40: cannot use \"seat\" (untyped string constant) as int value in variable declaration\n"}
+{"ImportPath":"example.com/buildfail [example.com/buildfail.test]","Action":"build-fail"}
+{"Time":"2026-10-25T15:34:33.261137737+01:00","Action":"start","Package":"example.com/buildfail"}
+{"Time":"2026-10-25T15:34:33.261255019+01:00","Action":"output","Package":"example.com/buildfail","Output":"FAIL\texample.com/buildfail [build failed]\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.261268099+01:00","Action":"fail","Package":"example.com/buildfail","Elapsed":0,"FailedBuild":"example.com/buildfail [example.com/buildfail.test]"}

go/buildstep/conformance/captured/go/deeptimeout.jsonl

@@ -0,0 +1,417 @@
+{"Time":"2026-10-25T15:35:18.991630993+01:00","Action":"start","Package":"example.com/deeptimeout"}
+{"Time":"2026-10-25T15:35:18.993895188+01:00","Action":"run","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat"}
+{"Time":"2026-10-25T15:35:18.993963909+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat","Output":"=== RUN   TestHoldsTheSeat\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:35:18.99399484+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat","Output":"=== PAUSE TestHoldsTheSeat\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:35:18.9939982+01:00","Action":"pause","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat"}
+{"Time":"2026-10-25T15:35:18.99400173+01:00","Action":"run","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus"}
+{"Time":"2026-10-25T15:35:18.99400456+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"=== RUN   TestWaitsForTheBus\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:35:18.99400838+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"=== PAUSE TestWaitsForTheBus\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:35:18.99401133+01:00","Action":"pause","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus"}
+{"Time":"2026-10-25T15:35:18.99401441+01:00","Action":"cont","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat"}
+{"Time":"2026-10-25T15:35:18.99401704+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat","Output":"=== CONT  TestHoldsTheSeat\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:35:18.994074141+01:00","Action":"cont","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus"}
+{"Time":"2026-10-25T15:35:18.994102612+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"=== CONT  TestWaitsForTheBus\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:35:21.00935195+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"panic: test timed out after 2s\n"}
+{"Time":"2026-10-25T15:35:21.00938383+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\trunning tests:\n"}
+{"Time":"2026-10-25T15:35:21.009394391+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t\tTestHoldsTheSeat (2s)\n"}
+{"Time":"2026-10-25T15:35:21.009398021+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t\tTestWaitsForTheBus (2s)\n"}
+{"Time":"2026-10-25T15:35:21.009401801+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.009406481+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 81 [running]:\n"}
+{"Time":"2026-10-25T15:35:21.009409911+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"testing.(*M).startAlarm.func1()\n"}
+{"Time":"2026-10-25T15:35:21.009413361+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/usr/lib/go/src/testing/testing.go:2961 +0x34a\n"}
+{"Time":"2026-10-25T15:35:21.009418341+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by time.goFunc\n"}
+{"Time":"2026-10-25T15:35:21.009421781+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/usr/lib/go/src/time/sleep.go:182 +0x2d\n"}
+{"Time":"2026-10-25T15:35:21.009424991+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.009428341+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 1 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.009431721+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"testing.tRunner.func1()\n"}
+{"Time":"2026-10-25T15:35:21.009441811+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/usr/lib/go/src/testing/testing.go:2144 +0x425\n"}
+{"Time":"2026-10-25T15:35:21.009445511+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"testing.tRunner(0x282e9702008, 0x282e9646bc8)\n"}
+{"Time":"2026-10-25T15:35:21.009449641+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/usr/lib/go/src/testing/testing.go:2201 +0x123\n"}
+{"Time":"2026-10-25T15:35:21.009453471+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"testing.runTests({0x55a45d, 0x17}, {0x55a45d, 0x17}, 0x282e95940f0, {0x6f19f0, 0x2, 0x2}, {0xc2afa2ca3b3c0c8d, 0x7737f168, ...})\n"}
+{"Time":"2026-10-25T15:35:21.009462092+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/usr/lib/go/src/testing/testing.go:2742 +0x510\n"}
+{"Time":"2026-10-25T15:35:21.009467222+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"testing.(*M).Run(0x282e96581e0)\n"}
+{"Time":"2026-10-25T15:35:21.009470662+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/usr/lib/go/src/testing/testing.go:2602 +0x6af\n"}
+{"Time":"2026-10-25T15:35:21.009473692+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"main.main()\n"}
+{"Time":"2026-10-25T15:35:21.009476942+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t_testmain.go:48 +0x9b\n"}
+{"Time":"2026-10-25T15:35:21.009480092+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.009483242+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 7 [sleep]:\n"}
+{"Time":"2026-10-25T15:35:21.009486502+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"time.Sleep(0xdf8475800)\n"}
+{"Time":"2026-10-25T15:35:21.009490682+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/usr/lib/go/src/runtime/time.go:368 +0x165\n"}
+{"Time":"2026-10-25T15:35:21.009493812+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat(0x282e9702248?)\n"}
+{"Time":"2026-10-25T15:35:21.009498842+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:14 +0x9e\n"}
+{"Time":"2026-10-25T15:35:21.009502242+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"testing.tRunner(0x282e9702248, 0x6d5e78)\n"}
+{"Time":"2026-10-25T15:35:21.009505742+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/usr/lib/go/src/testing/testing.go:2195 +0xea\n"}
+{"Time":"2026-10-25T15:35:21.009509292+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by testing.(*T).Run in goroutine 1\n"}
+{"Time":"2026-10-25T15:35:21.009512752+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/usr/lib/go/src/testing/testing.go:2260 +0x4d4\n"}
+{"Time":"2026-10-25T15:35:21.009515792+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.009518623+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 8 [sleep]:\n"}
+{"Time":"2026-10-25T15:35:21.009521303+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"time.Sleep(0xdf8475800)\n"}
+{"Time":"2026-10-25T15:35:21.009524423+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/usr/lib/go/src/runtime/time.go:368 +0x165\n"}
+{"Time":"2026-10-25T15:35:21.009531403+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestWaitsForTheBus(0x282e9702488?)\n"}
+{"Time":"2026-10-25T15:35:21.009534943+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:19 +0x25\n"}
+{"Time":"2026-10-25T15:35:21.009538403+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"testing.tRunner(0x282e9702488, 0x6d5e80)\n"}
+{"Time":"2026-10-25T15:35:21.009541953+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/usr/lib/go/src/testing/testing.go:2195 +0xea\n"}
+{"Time":"2026-10-25T15:35:21.009545233+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by testing.(*T).Run in goroutine 1\n"}
+{"Time":"2026-10-25T15:35:21.009548323+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/usr/lib/go/src/testing/testing.go:2260 +0x4d4\n"}
+{"Time":"2026-10-25T15:35:21.009551343+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.009554263+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 9 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.009557523+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.009561063+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.009564513+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.009571113+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.009574233+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.009577433+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 10 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.009580823+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.009584174+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.009587504+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.009590974+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.009594004+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.009597184+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 11 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.009600394+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.009603874+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.009610954+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.009614714+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.009618104+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.009621364+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 12 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.009624704+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.009628324+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.009631954+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.009635404+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.009638734+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.009641904+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 13 [chan receive]:\n"}
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+{"Time":"2026-10-25T15:35:21.009648645+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.009652065+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.009655625+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.009658885+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.009663385+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 14 [chan receive]:\n"}
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+{"Time":"2026-10-25T15:35:21.009680205+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
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+{"Time":"2026-10-25T15:35:21.01065114+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 56 [chan receive]:\n"}
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+{"Time":"2026-10-25T15:35:21.010678431+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010691171+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 57 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010694531+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010697641+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010700781+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010704001+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010706611+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010709421+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 58 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010712331+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010715351+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010718431+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010721691+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010724371+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010727362+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 59 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010730592+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010733662+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010736712+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010740162+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010742922+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010745772+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 60 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010752222+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010755402+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010758542+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010761822+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010764592+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010767992+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 61 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010771062+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010774282+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010779382+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010782942+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010785722+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010788573+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 62 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010791893+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010794943+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010798083+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010801683+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010804293+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010807283+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 63 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010810443+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010813553+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010816793+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010820233+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010823063+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010829493+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 64 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010832683+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
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+{"Time":"2026-10-25T15:35:21.010839223+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010842463+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010845333+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010848423+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 65 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010851663+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
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+{"Time":"2026-10-25T15:35:21.010861714+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010864914+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010867984+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 66 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010870944+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
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+{"Time":"2026-10-25T15:35:21.010877464+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010880504+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010883144+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010886194+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 67 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010889154+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010892234+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010895524+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010902154+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.010904984+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\n"}
+{"Time":"2026-10-25T15:35:21.010907984+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"goroutine 68 [chan receive]:\n"}
+{"Time":"2026-10-25T15:35:21.010911064+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"example.com/deeptimeout.TestHoldsTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:35:21.010914074+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x19\n"}
+{"Time":"2026-10-25T15:35:21.010917365+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"created by example.com/deeptimeout.TestHoldsTheSeat in goroutine 7\n"}
+{"Time":"2026-10-25T15:35:21.010920505+01:00","Action":"output","Package":"example.com/deeptimeout","Test":"TestWaitsForTheBus","Output":"\t/tmp/fix-1901b/deeptimeout/p_test.go:12 +0x37\n"}
+{"Time":"2026-10-25T15:35:21.013209581+01:00","Action":"output","Package":"example.com/deeptimeout","Output":"FAIL\texample.com/deeptimeout\t2.021s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:35:21.013258851+01:00","Action":"fail","Package":"example.com/deeptimeout","Elapsed":2.022}

go/buildstep/conformance/captured/go/exiting.jsonl

@@ -0,0 +1,10 @@
+{"Time":"2026-10-25T15:34:33.768742837+01:00","Action":"start","Package":"example.com/exiting"}
+{"Time":"2026-10-25T15:34:33.773822287+01:00","Action":"run","Package":"example.com/exiting","Test":"TestFine"}
+{"Time":"2026-10-25T15:34:33.773896608+01:00","Action":"output","Package":"example.com/exiting","Test":"TestFine","Output":"=== RUN   TestFine\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.773940319+01:00","Action":"output","Package":"example.com/exiting","Test":"TestFine","Output":"--- PASS: TestFine (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.773945359+01:00","Action":"pass","Package":"example.com/exiting","Test":"TestFine","Elapsed":0}
+{"Time":"2026-10-25T15:34:33.773952529+01:00","Action":"run","Package":"example.com/exiting","Test":"TestExits"}
+{"Time":"2026-10-25T15:34:33.773956439+01:00","Action":"output","Package":"example.com/exiting","Test":"TestExits","Output":"=== RUN   TestExits\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.773959829+01:00","Action":"output","Package":"example.com/exiting","Test":"TestExits","Output":"    p_test.go:11: closing the store\n"}
+{"Time":"2026-10-25T15:34:33.775158538+01:00","Action":"output","Package":"example.com/exiting","Output":"FAIL\texample.com/exiting\t0.006s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.775186509+01:00","Action":"fail","Package":"example.com/exiting","Elapsed":0.006}

go/buildstep/conformance/captured/go/killed.jsonl

@@ -0,0 +1,7 @@
+{"Time":"2026-10-25T15:34:34.328258934+01:00","Action":"start","Package":"example.com/killed"}
+{"Time":"2026-10-25T15:34:34.331465435+01:00","Action":"run","Package":"example.com/killed","Test":"TestKilled"}
+{"Time":"2026-10-25T15:34:34.331699248+01:00","Action":"output","Package":"example.com/killed","Test":"TestKilled","Output":"=== RUN   TestKilled\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:34.331853111+01:00","Action":"output","Package":"example.com/killed","Test":"TestKilled","Output":"    p_test.go:10: the kernel is about to kill this\n"}
+{"Time":"2026-10-25T15:34:34.334563213+01:00","Action":"output","Package":"example.com/killed","Test":"TestKilled","Output":"signal: killed\n"}
+{"Time":"2026-10-25T15:34:34.334611114+01:00","Action":"output","Package":"example.com/killed","Output":"FAIL\texample.com/killed\t0.006s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:34.334627134+01:00","Action":"fail","Package":"example.com/killed","Elapsed":0.006}

go/buildstep/conformance/captured/go/logthenfatal.jsonl

@@ -0,0 +1,13 @@
+{"Action":"start","Package":"x"}
+{"Action":"run","Package":"x","Test":"TestThree"}
+{"Action":"output","Package":"x","Test":"TestThree","Output":"=== RUN   TestThree\n","OutputType":"frame"}
+{"Action":"output","Package":"x","Test":"TestThree","Output":"    a_test.go:4: judged against /var/lib/mesh-build-go-work/id/beside/mesh-catalog as cloned\n"}
+{"Action":"output","Package":"x","Test":"TestThree","Output":"    a_test.go:5: 3 subscription(s) derive to a subject no emitter owns:\n","OutputType":"error"}
+{"Action":"output","Package":"x","Test":"TestThree","Output":"          a.b.c\n","OutputType":"error-continue"}
+{"Action":"output","Package":"x","Test":"TestThree","Output":"          d.e.f\n","OutputType":"error-continue"}
+{"Action":"output","Package":"x","Test":"TestThree","Output":"          g.h.i\n","OutputType":"error-continue"}
+{"Action":"output","Package":"x","Test":"TestThree","Output":"--- FAIL: TestThree (0.00s)\n","OutputType":"frame"}
+{"Action":"fail","Package":"x","Test":"TestThree","Elapsed":0}
+{"Action":"output","Package":"x","Output":"FAIL\n","OutputType":"frame"}
+{"Action":"output","Package":"x","Output":"FAIL\tx\t0.002s\n","OutputType":"frame"}
+{"Action":"fail","Package":"x","Elapsed":0.002}

go/buildstep/conformance/captured/go/mainexit.jsonl

@@ -0,0 +1,8 @@
+{"Time":"2026-10-25T15:34:35.274953775+01:00","Action":"start","Package":"example.com/mainexit"}
+{"Time":"2026-10-25T15:34:35.278129565+01:00","Action":"run","Package":"example.com/mainexit","Test":"TestFine"}
+{"Time":"2026-10-25T15:34:35.278191516+01:00","Action":"output","Package":"example.com/mainexit","Test":"TestFine","Output":"=== RUN   TestFine\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:35.278341979+01:00","Action":"output","Package":"example.com/mainexit","Test":"TestFine","Output":"--- PASS: TestFine (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:35.278351739+01:00","Action":"pass","Package":"example.com/mainexit","Test":"TestFine","Elapsed":0}
+{"Time":"2026-10-25T15:34:35.278359039+01:00","Action":"output","Package":"example.com/mainexit","Output":"PASS\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:35.279516487+01:00","Action":"output","Package":"example.com/mainexit","Output":"FAIL\texample.com/mainexit\t0.004s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:35.279539298+01:00","Action":"fail","Package":"example.com/mainexit","Elapsed":0.005}

go/buildstep/conformance/captured/go/panicking.jsonl

@@ -0,0 +1,27 @@
+{"Time":"2026-10-25T15:34:33.031091436+01:00","Action":"start","Package":"example.com/panicking"}
+{"Time":"2026-10-25T15:34:33.036353279+01:00","Action":"run","Package":"example.com/panicking","Test":"TestBefore"}
+{"Time":"2026-10-25T15:34:33.036441781+01:00","Action":"output","Package":"example.com/panicking","Test":"TestBefore","Output":"=== RUN   TestBefore\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.036568163+01:00","Action":"output","Package":"example.com/panicking","Test":"TestBefore","Output":"--- PASS: TestBefore (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.036609863+01:00","Action":"pass","Package":"example.com/panicking","Test":"TestBefore","Elapsed":0}
+{"Time":"2026-10-25T15:34:33.036641304+01:00","Action":"run","Package":"example.com/panicking","Test":"TestPanics"}
+{"Time":"2026-10-25T15:34:33.036645914+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"=== RUN   TestPanics\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.036698995+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"    p_test.go:8: about to look up the seat\n"}
+{"Time":"2026-10-25T15:34:33.036773996+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"--- FAIL: TestPanics (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.03897418+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"panic: assignment to entry in nil map [recovered, repanicked]\n"}
+{"Time":"2026-10-25T15:34:33.040332172+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"\n"}
+{"Time":"2026-10-25T15:34:33.040414493+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"goroutine 8 [running]:\n"}
+{"Time":"2026-10-25T15:34:33.040521475+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"testing.tRunner.func1.2({0x6b8120, 0x6eff80})\n"}
+{"Time":"2026-10-25T15:34:33.040601826+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"\t/usr/lib/go/src/testing/testing.go:2125 +0x232\n"}
+{"Time":"2026-10-25T15:34:33.040641947+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"testing.tRunner.func1()\n"}
+{"Time":"2026-10-25T15:34:33.040720648+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"\t/usr/lib/go/src/testing/testing.go:2128 +0x329\n"}
+{"Time":"2026-10-25T15:34:33.04083286+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"panic({0x6b8120?, 0x6eff80?})\n"}
+{"Time":"2026-10-25T15:34:33.040912921+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"\t/usr/lib/go/src/runtime/panic.go:859 +0x125\n"}
+{"Time":"2026-10-25T15:34:33.040981652+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"example.com/panicking.TestPanics(0x228226cd0488?)\n"}
+{"Time":"2026-10-25T15:34:33.041059903+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"\t/tmp/fix-1901b/panicking/p_test.go:10 +0x53\n"}
+{"Time":"2026-10-25T15:34:33.041132704+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"testing.tRunner(0x228226cd0488, 0x6d5bc8)\n"}
+{"Time":"2026-10-25T15:34:33.041215586+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"\t/usr/lib/go/src/testing/testing.go:2195 +0xea\n"}
+{"Time":"2026-10-25T15:34:33.041221966+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"created by testing.(*T).Run in goroutine 1\n"}
+{"Time":"2026-10-25T15:34:33.041225556+01:00","Action":"output","Package":"example.com/panicking","Test":"TestPanics","Output":"\t/usr/lib/go/src/testing/testing.go:2260 +0x4d4\n"}
+{"Time":"2026-10-25T15:34:33.041984088+01:00","Action":"fail","Package":"example.com/panicking","Test":"TestPanics","Elapsed":0}
+{"Time":"2026-10-25T15:34:33.041996638+01:00","Action":"output","Package":"example.com/panicking","Output":"FAIL\texample.com/panicking\t0.010s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:33.042044079+01:00","Action":"fail","Package":"example.com/panicking","Elapsed":0.011}

go/buildstep/conformance/captured/go/passfirst.jsonl

@@ -0,0 +1,22 @@
+{"Time":"2026-10-26T19:40:29.574068887+01:00","Action":"start","Package":"example.com/passfirst/a"}
+{"Time":"2026-10-26T19:40:29.574347185+01:00","Action":"start","Package":"example.com/passfirst/b"}
+{"Time":"2026-10-26T19:40:29.576503518+01:00","Action":"run","Package":"example.com/passfirst/a","Test":"TestTheFirstPackagePasses"}
+{"Time":"2026-10-26T19:40:29.576557657+01:00","Action":"output","Package":"example.com/passfirst/a","Test":"TestTheFirstPackagePasses","Output":"=== RUN   TestTheFirstPackagePasses\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.576589367+01:00","Action":"output","Package":"example.com/passfirst/a","Test":"TestTheFirstPackagePasses","Output":"--- PASS: TestTheFirstPackagePasses (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.576594637+01:00","Action":"pass","Package":"example.com/passfirst/a","Test":"TestTheFirstPackagePasses","Elapsed":0}
+{"Time":"2026-10-26T19:40:29.576602487+01:00","Action":"output","Package":"example.com/passfirst/a","Output":"PASS\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.576614477+01:00","Action":"run","Package":"example.com/passfirst/b","Test":"TestTheSecondPackagePassesFirst"}
+{"Time":"2026-10-26T19:40:29.576626897+01:00","Action":"output","Package":"example.com/passfirst/b","Test":"TestTheSecondPackagePassesFirst","Output":"=== RUN   TestTheSecondPackagePassesFirst\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.576631187+01:00","Action":"output","Package":"example.com/passfirst/b","Test":"TestTheSecondPackagePassesFirst","Output":"--- PASS: TestTheSecondPackagePassesFirst (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.576635567+01:00","Action":"pass","Package":"example.com/passfirst/b","Test":"TestTheSecondPackagePassesFirst","Elapsed":0}
+{"Time":"2026-10-26T19:40:29.576638427+01:00","Action":"run","Package":"example.com/passfirst/b","Test":"TestTheSecondPackageFails"}
+{"Time":"2026-10-26T19:40:29.576640647+01:00","Action":"output","Package":"example.com/passfirst/b","Test":"TestTheSecondPackageFails","Output":"=== RUN   TestTheSecondPackageFails\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.576643477+01:00","Action":"output","Package":"example.com/passfirst/b","Test":"TestTheSecondPackageFails","Output":"    b_test.go:8: judged against the seat as it stands\n"}
+{"Time":"2026-10-26T19:40:29.576646497+01:00","Action":"output","Package":"example.com/passfirst/b","Test":"TestTheSecondPackageFails","Output":"    b_test.go:9: the seat has 2 holders, want 1\n","OutputType":"error"}
+{"Time":"2026-10-26T19:40:29.576650087+01:00","Action":"output","Package":"example.com/passfirst/b","Test":"TestTheSecondPackageFails","Output":"--- FAIL: TestTheSecondPackageFails (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.576652797+01:00","Action":"fail","Package":"example.com/passfirst/b","Test":"TestTheSecondPackageFails","Elapsed":0}
+{"Time":"2026-10-26T19:40:29.576655177+01:00","Action":"output","Package":"example.com/passfirst/b","Output":"FAIL\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.577365541+01:00","Action":"output","Package":"example.com/passfirst/a","Output":"ok  \texample.com/passfirst/a\t0.003s\n"}
+{"Time":"2026-10-26T19:40:29.577382561+01:00","Action":"pass","Package":"example.com/passfirst/a","Elapsed":0.003}
+{"Time":"2026-10-26T19:40:29.577380641+01:00","Action":"output","Package":"example.com/passfirst/b","Output":"FAIL\texample.com/passfirst/b\t0.003s\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.5774131+01:00","Action":"fail","Package":"example.com/passfirst/b","Elapsed":0.003}

go/buildstep/conformance/captured/go/passthenfail.jsonl

@@ -0,0 +1,15 @@
+{"Time":"2026-10-25T15:34:34.919624192+01:00","Action":"start","Package":"example.com/passthenfail"}
+{"Time":"2026-10-25T15:34:34.922861224+01:00","Action":"run","Package":"example.com/passthenfail","Test":"TestFine"}
+{"Time":"2026-10-25T15:34:34.922932965+01:00","Action":"output","Package":"example.com/passthenfail","Test":"TestFine","Output":"=== RUN   TestFine\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:34.922969205+01:00","Action":"output","Package":"example.com/passthenfail","Test":"TestFine","Output":"--- PASS: TestFine (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:34.922979956+01:00","Action":"pass","Package":"example.com/passthenfail","Test":"TestFine","Elapsed":0}
+{"Time":"2026-10-25T15:34:34.922989416+01:00","Action":"output","Package":"example.com/passthenfail","Output":"PASS\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:34.925022528+01:00","Action":"output","Package":"example.com/passthenfail","Output":"panic: the bus closed after the tests: nats: connection closed\n"}
+{"Time":"2026-10-25T15:34:34.925043388+01:00","Action":"output","Package":"example.com/passthenfail","Output":"\n"}
+{"Time":"2026-10-25T15:34:34.925046848+01:00","Action":"output","Package":"example.com/passthenfail","Output":"goroutine 20 [running]:\n"}
+{"Time":"2026-10-25T15:34:34.925051338+01:00","Action":"output","Package":"example.com/passthenfail","Output":"example.com/passthenfail.TestMain.func1()\n"}
+{"Time":"2026-10-25T15:34:34.925055878+01:00","Action":"output","Package":"example.com/passthenfail","Output":"\t/tmp/fix-1901b/passthenfail/p_test.go:13 +0x25\n"}
+{"Time":"2026-10-25T15:34:34.925061428+01:00","Action":"output","Package":"example.com/passthenfail","Output":"created by example.com/passthenfail.TestMain in goroutine 1\n"}
+{"Time":"2026-10-25T15:34:34.925065028+01:00","Action":"output","Package":"example.com/passthenfail","Output":"\t/tmp/fix-1901b/passthenfail/p_test.go:13 +0x25\n"}
+{"Time":"2026-10-25T15:34:34.925390203+01:00","Action":"output","Package":"example.com/passthenfail","Output":"FAIL\texample.com/passthenfail\t0.005s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:34.925402904+01:00","Action":"fail","Package":"example.com/passthenfail","Elapsed":0.006}

go/buildstep/conformance/captured/go/race.jsonl

@@ -0,0 +1,53 @@
+{"Time":"2026-10-25T15:50:42.908557309+01:00","Action":"start","Package":"example.com/race"}
+{"Time":"2026-10-25T15:50:42.924298679+01:00","Action":"run","Package":"example.com/race","Test":"TestBefore"}
+{"Time":"2026-10-25T15:50:42.92438195+01:00","Action":"output","Package":"example.com/race","Test":"TestBefore","Output":"=== RUN   TestBefore\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.924648842+01:00","Action":"output","Package":"example.com/race","Test":"TestBefore","Output":"--- PASS: TestBefore (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.924685133+01:00","Action":"pass","Package":"example.com/race","Test":"TestBefore","Elapsed":0}
+{"Time":"2026-10-25T15:50:42.924728573+01:00","Action":"run","Package":"example.com/race","Test":"TestRacesOnTheSeat"}
+{"Time":"2026-10-25T15:50:42.924733573+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"=== RUN   TestRacesOnTheSeat\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.92637298+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"==================\n"}
+{"Time":"2026-10-25T15:50:42.92641567+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"WARNING: DATA RACE\n"}
+{"Time":"2026-10-25T15:50:42.926444061+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"Write at 0x000000833468 by goroutine 10:\n"}
+{"Time":"2026-10-25T15:50:42.926462621+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  example.com/race.TestRacesOnTheSeat.func1()\n"}
+{"Time":"2026-10-25T15:50:42.926467121+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /tmp/fix-1901b/race/p_test.go:13 +0x24\n"}
+{"Time":"2026-10-25T15:50:42.926483061+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"\n"}
+{"Time":"2026-10-25T15:50:42.926509741+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"Previous write at 0x000000833468 by goroutine 9:\n"}
+{"Time":"2026-10-25T15:50:42.926530142+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  example.com/race.TestRacesOnTheSeat()\n"}
+{"Time":"2026-10-25T15:50:42.926534952+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /tmp/fix-1901b/race/p_test.go:14 +0x30\n"}
+{"Time":"2026-10-25T15:50:42.926550462+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.tRunner()\n"}
+{"Time":"2026-10-25T15:50:42.926554612+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2195 +0x21c\n"}
+{"Time":"2026-10-25T15:50:42.926571142+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.(*T).Run.gowrap1()\n"}
+{"Time":"2026-10-25T15:50:42.926575812+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2260 +0x38\n"}
+{"Time":"2026-10-25T15:50:42.926592202+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"\n"}
+{"Time":"2026-10-25T15:50:42.926607792+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"Goroutine 10 (running) created at:\n"}
+{"Time":"2026-10-25T15:50:42.926624292+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  example.com/race.TestRacesOnTheSeat()\n"}
+{"Time":"2026-10-25T15:50:42.926628923+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /tmp/fix-1901b/race/p_test.go:13 +0x24\n"}
+{"Time":"2026-10-25T15:50:42.926643853+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.tRunner()\n"}
+{"Time":"2026-10-25T15:50:42.926648103+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2195 +0x21c\n"}
+{"Time":"2026-10-25T15:50:42.926674843+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.(*T).Run.gowrap1()\n"}
+{"Time":"2026-10-25T15:50:42.926680673+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2260 +0x38\n"}
+{"Time":"2026-10-25T15:50:42.926695433+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"\n"}
+{"Time":"2026-10-25T15:50:42.926711063+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"Goroutine 9 (running) created at:\n"}
+{"Time":"2026-10-25T15:50:42.926726614+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.(*T).Run()\n"}
+{"Time":"2026-10-25T15:50:42.926730814+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2260 +0xb12\n"}
+{"Time":"2026-10-25T15:50:42.926746484+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.runTests.func1()\n"}
+{"Time":"2026-10-25T15:50:42.926750764+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2744 +0x84\n"}
+{"Time":"2026-10-25T15:50:42.926765354+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.tRunner()\n"}
+{"Time":"2026-10-25T15:50:42.926769844+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2195 +0x21c\n"}
+{"Time":"2026-10-25T15:50:42.926791794+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.runTests()\n"}
+{"Time":"2026-10-25T15:50:42.926796704+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2742 +0x9e9\n"}
+{"Time":"2026-10-25T15:50:42.926811544+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  testing.(*M).Run()\n"}
+{"Time":"2026-10-25T15:50:42.926816694+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      /usr/lib/go/src/testing/testing.go:2602 +0xf44\n"}
+{"Time":"2026-10-25T15:50:42.926831695+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"  main.main()\n"}
+{"Time":"2026-10-25T15:50:42.926835935+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"      _testmain.go:50 +0x164\n"}
+{"Time":"2026-10-25T15:50:42.926850905+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"==================\n"}
+{"Time":"2026-10-25T15:50:42.935320241+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"    testing.go:1867: race detected during execution of test\n","OutputType":"error"}
+{"Time":"2026-10-25T15:50:42.935520113+01:00","Action":"output","Package":"example.com/race","Test":"TestRacesOnTheSeat","Output":"--- FAIL: TestRacesOnTheSeat (0.01s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.935592973+01:00","Action":"fail","Package":"example.com/race","Test":"TestRacesOnTheSeat","Elapsed":0.01}
+{"Time":"2026-10-25T15:50:42.935722225+01:00","Action":"run","Package":"example.com/race","Test":"TestAfter"}
+{"Time":"2026-10-25T15:50:42.935728845+01:00","Action":"output","Package":"example.com/race","Test":"TestAfter","Output":"=== RUN   TestAfter\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.935995928+01:00","Action":"output","Package":"example.com/race","Test":"TestAfter","Output":"--- PASS: TestAfter (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.936006328+01:00","Action":"pass","Package":"example.com/race","Test":"TestAfter","Elapsed":0}
+{"Time":"2026-10-25T15:50:42.936009978+01:00","Action":"output","Package":"example.com/race","Output":"FAIL\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.937730745+01:00","Action":"output","Package":"example.com/race","Output":"FAIL\texample.com/race\t0.028s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:42.937802066+01:00","Action":"fail","Package":"example.com/race","Elapsed":0.029}

go/buildstep/conformance/captured/go/racemain.jsonl

@@ -0,0 +1,27 @@
+{"Time":"2026-10-25T15:50:43.551701745+01:00","Action":"start","Package":"example.com/racemain"}
+{"Time":"2026-10-25T15:50:43.570709708+01:00","Action":"run","Package":"example.com/racemain","Test":"TestFine"}
+{"Time":"2026-10-25T15:50:43.570806059+01:00","Action":"output","Package":"example.com/racemain","Test":"TestFine","Output":"=== RUN   TestFine\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:43.57085525+01:00","Action":"output","Package":"example.com/racemain","Test":"TestFine","Output":"--- PASS: TestFine (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:43.57086149+01:00","Action":"pass","Package":"example.com/racemain","Test":"TestFine","Elapsed":0}
+{"Time":"2026-10-25T15:50:43.57086974+01:00","Action":"output","Package":"example.com/racemain","Output":"PASS\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:43.572155623+01:00","Action":"output","Package":"example.com/racemain","Output":"==================\n"}
+{"Time":"2026-10-25T15:50:43.572168083+01:00","Action":"output","Package":"example.com/racemain","Output":"WARNING: DATA RACE\n"}
+{"Time":"2026-10-25T15:50:43.572171933+01:00","Action":"output","Package":"example.com/racemain","Output":"Write at 0x000000836428 by goroutine 9:\n"}
+{"Time":"2026-10-25T15:50:43.572176703+01:00","Action":"output","Package":"example.com/racemain","Output":"  example.com/racemain.TestMain.func1()\n"}
+{"Time":"2026-10-25T15:50:43.572180053+01:00","Action":"output","Package":"example.com/racemain","Output":"      /tmp/fix-1901b/racemain/p_test.go:15 +0x24\n"}
+{"Time":"2026-10-25T15:50:43.572184923+01:00","Action":"output","Package":"example.com/racemain","Output":"\n"}
+{"Time":"2026-10-25T15:50:43.572189613+01:00","Action":"output","Package":"example.com/racemain","Output":"Previous write at 0x000000836428 by main goroutine:\n"}
+{"Time":"2026-10-25T15:50:43.572192993+01:00","Action":"output","Package":"example.com/racemain","Output":"  example.com/racemain.TestMain()\n"}
+{"Time":"2026-10-25T15:50:43.572198573+01:00","Action":"output","Package":"example.com/racemain","Output":"      /tmp/fix-1901b/racemain/p_test.go:16 +0x44\n"}
+{"Time":"2026-10-25T15:50:43.572202433+01:00","Action":"output","Package":"example.com/racemain","Output":"  main.main()\n"}
+{"Time":"2026-10-25T15:50:43.572205623+01:00","Action":"output","Package":"example.com/racemain","Output":"      _testmain.go:48 +0x171\n"}
+{"Time":"2026-10-25T15:50:43.572208443+01:00","Action":"output","Package":"example.com/racemain","Output":"\n"}
+{"Time":"2026-10-25T15:50:43.572211573+01:00","Action":"output","Package":"example.com/racemain","Output":"Goroutine 9 (running) created at:\n"}
+{"Time":"2026-10-25T15:50:43.572214803+01:00","Action":"output","Package":"example.com/racemain","Output":"  example.com/racemain.TestMain()\n"}
+{"Time":"2026-10-25T15:50:43.572218043+01:00","Action":"output","Package":"example.com/racemain","Output":"      /tmp/fix-1901b/racemain/p_test.go:15 +0x37\n"}
+{"Time":"2026-10-25T15:50:43.572225414+01:00","Action":"output","Package":"example.com/racemain","Output":"  main.main()\n"}
+{"Time":"2026-10-25T15:50:43.572228654+01:00","Action":"output","Package":"example.com/racemain","Output":"      _testmain.go:48 +0x171\n"}
+{"Time":"2026-10-25T15:50:43.572231664+01:00","Action":"output","Package":"example.com/racemain","Output":"==================\n"}
+{"Time":"2026-10-25T15:50:44.581262249+01:00","Action":"output","Package":"example.com/racemain","Output":"Found 1 data race(s)\n"}
+{"Time":"2026-10-25T15:50:44.584693204+01:00","Action":"output","Package":"example.com/racemain","Output":"FAIL\texample.com/racemain\t1.031s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:50:44.584737425+01:00","Action":"fail","Package":"example.com/racemain","Elapsed":1.033}

go/buildstep/conformance/captured/go/subpanic.jsonl

@@ -0,0 +1,30 @@
+{"Time":"2026-10-26T20:15:37.791161045+01:00","Action":"start","Package":"example.com/subpanic"}
+{"Time":"2026-10-26T20:15:37.793205666+01:00","Action":"run","Package":"example.com/subpanic","Test":"TestTable"}
+{"Time":"2026-10-26T20:15:37.793257158+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"=== RUN   TestTable\n","OutputType":"frame"}
+{"Time":"2026-10-26T20:15:37.793288149+01:00","Action":"run","Package":"example.com/subpanic","Test":"TestTable/passes"}
+{"Time":"2026-10-26T20:15:37.793290669+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable/passes","Output":"=== RUN   TestTable/passes\n","OutputType":"frame"}
+{"Time":"2026-10-26T20:15:37.793298009+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable/passes","Output":"--- PASS: TestTable/passes (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-26T20:15:37.793311679+01:00","Action":"pass","Package":"example.com/subpanic","Test":"TestTable/passes","Elapsed":0}
+{"Time":"2026-10-26T20:15:37.79331977+01:00","Action":"run","Package":"example.com/subpanic","Test":"TestTable/panics"}
+{"Time":"2026-10-26T20:15:37.79332377+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable/panics","Output":"=== RUN   TestTable/panics\n","OutputType":"frame"}
+{"Time":"2026-10-26T20:15:37.79332773+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable/panics","Output":"--- FAIL: TestTable/panics (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-26T20:15:37.79333111+01:00","Action":"fail","Package":"example.com/subpanic","Test":"TestTable/panics","Elapsed":0}
+{"Time":"2026-10-26T20:15:37.79333383+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"--- FAIL: TestTable (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-26T20:15:37.795322529+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"panic: assignment to entry in nil map [recovered, repanicked]\n"}
+{"Time":"2026-10-26T20:15:37.795331489+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"\n"}
+{"Time":"2026-10-26T20:15:37.795340579+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"goroutine 9 [running]:\n"}
+{"Time":"2026-10-26T20:15:37.79534387+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"testing.tRunner.func1.2({0x6b7010, 0x6eef80})\n"}
+{"Time":"2026-10-26T20:15:37.79534657+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"\t/usr/lib/go/src/testing/testing.go:2125 +0x232\n"}
+{"Time":"2026-10-26T20:15:37.79534907+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"testing.tRunner.func1()\n"}
+{"Time":"2026-10-26T20:15:37.79535172+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"\t/usr/lib/go/src/testing/testing.go:2128 +0x329\n"}
+{"Time":"2026-10-26T20:15:37.79535625+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"panic({0x6b7010?, 0x6eef80?})\n"}
+{"Time":"2026-10-26T20:15:37.79535879+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"\t/usr/lib/go/src/runtime/panic.go:859 +0x125\n"}
+{"Time":"2026-10-26T20:15:37.79536129+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"example.com/subpanic.TestTable.func2(0x3b39436666c8?)\n"}
+{"Time":"2026-10-26T20:15:37.79536452+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"\t/tmp/1901k/go/subpanic/p_test.go:7 +0x28\n"}
+{"Time":"2026-10-26T20:15:37.79536782+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"testing.tRunner(0x3b39436666c8, 0x6d4b58)\n"}
+{"Time":"2026-10-26T20:15:37.7953704+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"\t/usr/lib/go/src/testing/testing.go:2195 +0xea\n"}
+{"Time":"2026-10-26T20:15:37.79537289+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"created by testing.(*T).Run in goroutine 7\n"}
+{"Time":"2026-10-26T20:15:37.795381681+01:00","Action":"output","Package":"example.com/subpanic","Test":"TestTable","Output":"\t/usr/lib/go/src/testing/testing.go:2260 +0x4d4\n"}
+{"Time":"2026-10-26T20:15:37.795731441+01:00","Action":"fail","Package":"example.com/subpanic","Test":"TestTable","Elapsed":0}
+{"Time":"2026-10-26T20:15:37.795759332+01:00","Action":"output","Package":"example.com/subpanic","Output":"FAIL\texample.com/subpanic\t0.004s\n","OutputType":"frame"}
+{"Time":"2026-10-26T20:15:37.795783503+01:00","Action":"fail","Package":"example.com/subpanic","Elapsed":0.005}

go/buildstep/conformance/captured/go/subtests.jsonl

@@ -0,0 +1,17 @@
+{"Time":"2026-10-26T19:40:29.768101399+01:00","Action":"start","Package":"example.com/subtests"}
+{"Time":"2026-10-26T19:40:29.770109733+01:00","Action":"run","Package":"example.com/subtests","Test":"TestTheTable"}
+{"Time":"2026-10-26T19:40:29.770152272+01:00","Action":"output","Package":"example.com/subtests","Test":"TestTheTable","Output":"=== RUN   TestTheTable\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.770189372+01:00","Action":"run","Package":"example.com/subtests","Test":"TestTheTable/passes"}
+{"Time":"2026-10-26T19:40:29.770191882+01:00","Action":"output","Package":"example.com/subtests","Test":"TestTheTable/passes","Output":"=== RUN   TestTheTable/passes\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.770197442+01:00","Action":"output","Package":"example.com/subtests","Test":"TestTheTable/passes","Output":"--- PASS: TestTheTable/passes (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.770204352+01:00","Action":"pass","Package":"example.com/subtests","Test":"TestTheTable/passes","Elapsed":0}
+{"Time":"2026-10-26T19:40:29.770209622+01:00","Action":"run","Package":"example.com/subtests","Test":"TestTheTable/fails"}
+{"Time":"2026-10-26T19:40:29.770211832+01:00","Action":"output","Package":"example.com/subtests","Test":"TestTheTable/fails","Output":"=== RUN   TestTheTable/fails\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.770214722+01:00","Action":"output","Package":"example.com/subtests","Test":"TestTheTable/fails","Output":"    s_test.go:7: got 3 machines, want 4\n","OutputType":"error"}
+{"Time":"2026-10-26T19:40:29.770218032+01:00","Action":"output","Package":"example.com/subtests","Test":"TestTheTable/fails","Output":"--- FAIL: TestTheTable/fails (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.770220732+01:00","Action":"fail","Package":"example.com/subtests","Test":"TestTheTable/fails","Elapsed":0}
+{"Time":"2026-10-26T19:40:29.770223522+01:00","Action":"output","Package":"example.com/subtests","Test":"TestTheTable","Output":"--- FAIL: TestTheTable (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.770226292+01:00","Action":"fail","Package":"example.com/subtests","Test":"TestTheTable","Elapsed":0}
+{"Time":"2026-10-26T19:40:29.770228582+01:00","Action":"output","Package":"example.com/subtests","Output":"FAIL\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.770561979+01:00","Action":"output","Package":"example.com/subtests","Output":"FAIL\texample.com/subtests\t0.002s\n","OutputType":"frame"}
+{"Time":"2026-10-26T19:40:29.770581629+01:00","Action":"fail","Package":"example.com/subtests","Elapsed":0.002}

go/buildstep/conformance/captured/go/timeout.jsonl

@@ -0,0 +1,43 @@
+{"Time":"2026-10-25T15:34:36.049580618+01:00","Action":"start","Package":"example.com/timeout"}
+{"Time":"2026-10-25T15:34:36.053250986+01:00","Action":"run","Package":"example.com/timeout","Test":"TestQuick"}
+{"Time":"2026-10-25T15:34:36.053354018+01:00","Action":"output","Package":"example.com/timeout","Test":"TestQuick","Output":"=== RUN   TestQuick\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:36.053459789+01:00","Action":"output","Package":"example.com/timeout","Test":"TestQuick","Output":"--- PASS: TestQuick (0.00s)\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:36.05348499+01:00","Action":"pass","Package":"example.com/timeout","Test":"TestQuick","Elapsed":0}
+{"Time":"2026-10-25T15:34:36.0535114+01:00","Action":"run","Package":"example.com/timeout","Test":"TestWaitsForever"}
+{"Time":"2026-10-25T15:34:36.05351549+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"=== RUN   TestWaitsForever\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:36.053567451+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"    p_test.go:11: waiting for the bus\n"}
+{"Time":"2026-10-25T15:34:38.064693307+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"panic: test timed out after 2s\n"}
+{"Time":"2026-10-25T15:34:38.06487122+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\trunning tests:\n"}
+{"Time":"2026-10-25T15:34:38.06491684+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t\tTestWaitsForever (2s)\n"}
+{"Time":"2026-10-25T15:34:38.065034382+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\n"}
+{"Time":"2026-10-25T15:34:38.065108573+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"goroutine 33 [running]:\n"}
+{"Time":"2026-10-25T15:34:38.065154754+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"testing.(*M).startAlarm.func1()\n"}
+{"Time":"2026-10-25T15:34:38.065386208+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2961 +0x34a\n"}
+{"Time":"2026-10-25T15:34:38.065431878+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"created by time.goFunc\n"}
+{"Time":"2026-10-25T15:34:38.0655151+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/time/sleep.go:182 +0x2d\n"}
+{"Time":"2026-10-25T15:34:38.06553471+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\n"}
+{"Time":"2026-10-25T15:34:38.065847805+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"goroutine 1 [chan receive]:\n"}
+{"Time":"2026-10-25T15:34:38.066038298+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"testing.(*T).Run(0x3a0209bc8008, {0x5580aa?, 0x3a0209a9caa0?}, 0x6d5b10)\n"}
+{"Time":"2026-10-25T15:34:38.066047488+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2268 +0x4f2\n"}
+{"Time":"2026-10-25T15:34:38.066051368+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"testing.runTests.func1(0x3a0209bc8008)\n"}
+{"Time":"2026-10-25T15:34:38.066056128+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2744 +0x37\n"}
+{"Time":"2026-10-25T15:34:38.066059478+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"testing.tRunner(0x3a0209bc8008, 0x3a0209a9cbc8)\n"}
+{"Time":"2026-10-25T15:34:38.066064958+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2195 +0xea\n"}
+{"Time":"2026-10-25T15:34:38.066069599+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"testing.runTests({0x559017, 0x13}, {0x559017, 0x13}, 0x3a0209b8e0d8, {0x6f19f0, 0x2, 0x2}, {0xc2afa2bf832a3f56, 0x773908b5, ...})\n"}
+{"Time":"2026-10-25T15:34:38.066083309+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2742 +0x510\n"}
+{"Time":"2026-10-25T15:34:38.066086879+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"testing.(*M).Run(0x3a0209b8c1e0)\n"}
+{"Time":"2026-10-25T15:34:38.066090269+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2602 +0x6af\n"}
+{"Time":"2026-10-25T15:34:38.066093429+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"main.main()\n"}
+{"Time":"2026-10-25T15:34:38.066097569+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t_testmain.go:48 +0x9b\n"}
+{"Time":"2026-10-25T15:34:38.066100639+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\n"}
+{"Time":"2026-10-25T15:34:38.066103769+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"goroutine 20 [sleep]:\n"}
+{"Time":"2026-10-25T15:34:38.066106969+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"time.Sleep(0xdf8475800)\n"}
+{"Time":"2026-10-25T15:34:38.066110279+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/runtime/time.go:368 +0x165\n"}
+{"Time":"2026-10-25T15:34:38.066113639+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"example.com/timeout.TestWaitsForever(0x3a0209bc8488?)\n"}
+{"Time":"2026-10-25T15:34:38.066117109+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/tmp/fix-1901b/timeout/p_test.go:12 +0x48\n"}
+{"Time":"2026-10-25T15:34:38.066120239+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"testing.tRunner(0x3a0209bc8488, 0x6d5b10)\n"}
+{"Time":"2026-10-25T15:34:38.066123509+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2195 +0xea\n"}
+{"Time":"2026-10-25T15:34:38.066126839+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"created by testing.(*T).Run in goroutine 1\n"}
+{"Time":"2026-10-25T15:34:38.066129989+01:00","Action":"output","Package":"example.com/timeout","Test":"TestWaitsForever","Output":"\t/usr/lib/go/src/testing/testing.go:2260 +0x4d4\n"}
+{"Time":"2026-10-25T15:34:38.066986453+01:00","Action":"output","Package":"example.com/timeout","Output":"FAIL\texample.com/timeout\t2.017s\n","OutputType":"frame"}
+{"Time":"2026-10-25T15:34:38.067002113+01:00","Action":"fail","Package":"example.com/timeout","Elapsed":2.017}

go/buildstep/conformance/captured/node/crash.console

@@ -0,0 +1,2 @@
+npm notice run test
+npm notice run node --test --experimental-strip-types 'test/*.test.ts'

go/buildstep/conformance/captured/node/crash.tap

@@ -0,0 +1,41 @@
+TAP version 13
+# Subtest: passes before the crash
+ok 1 - passes before the crash
+  ---
+  duration_ms: 0.746694
+  type: 'test'
+  ...
+# Subtest: throws after it returned
+ok 2 - throws after it returned
+  ---
+  duration_ms: 0.763364
+  type: 'test'
+  ...
+# Subtest: waits after the throw
+ok 3 - waits after the throw
+  ---
+  duration_ms: 49.953893
+  type: 'test'
+  ...
+# Error: Test "throws after it returned" at test/b.test.ts:2:1 generated asynchronous activity after the test ended. This activity created the error "Error: the bus closed under the test" and would have caused the test to fail, but instead triggered an uncaughtException event.
+# Subtest: test/b.test.ts
+not ok 2 - test/b.test.ts
+  ---
+  duration_ms: 155.864774
+  type: 'test'
+  location: '/tmp/1901k/node/crash/test/b.test.ts:1:1'
+  failureType: 'testCodeFailure'
+  exitCode: 1
+  signal: ~
+  error: 'test failed'
+  code: 'ERR_TEST_FAILURE'
+  ...
+1..4
+# tests 4
+# suites 0
+# pass 3
+# fail 1
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 168.479173

go/buildstep/conformance/captured/node/logcrash.console

@@ -0,0 +1,2 @@
+npm notice run test
+npm notice run node --test --experimental-strip-types 'test/*.test.ts'

go/buildstep/conformance/captured/node/logcrash.tap

@@ -0,0 +1,42 @@
+TAP version 13
+# retrying after Error: the store was not ready yet
+# Subtest: passes and logs
+ok 1 - passes and logs
+  ---
+  duration_ms: 1.184595
+  type: 'test'
+  ...
+# Subtest: throws after it returned
+ok 2 - throws after it returned
+  ---
+  duration_ms: 0.748862
+  type: 'test'
+  ...
+# Subtest: waits after the throw
+ok 3 - waits after the throw
+  ---
+  duration_ms: 51.019875
+  type: 'test'
+  ...
+# Error: Test "throws after it returned" at test/b.test.ts:2:1 generated asynchronous activity after the test ended. This activity created the error "Error: the bus closed under the test" and would have caused the test to fail, but instead triggered an uncaughtException event.
+# Subtest: test/b.test.ts
+not ok 2 - test/b.test.ts
+  ---
+  duration_ms: 172.91715
+  type: 'test'
+  location: '/tmp/1901k/node/logcrash/test/b.test.ts:1:1'
+  failureType: 'testCodeFailure'
+  exitCode: 1
+  signal: ~
+  error: 'test failed'
+  code: 'ERR_TEST_FAILURE'
+  ...
+1..4
+# tests 4
+# suites 0
+# pass 3
+# fail 1
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 185.744334

go/buildstep/conformance/captured/node/suite.console

@@ -0,0 +1,2 @@
+npm notice run test
+npm notice run node --test --experimental-strip-types 'test/*.test.ts'

go/buildstep/conformance/captured/node/suite.tap

@@ -0,0 +1,61 @@
+TAP version 13
+# Subtest: the seat
+    # Subtest: passes inside
+    ok 1 - passes inside
+      ---
+      duration_ms: 0.577396
+      type: 'test'
+      ...
+    # Subtest: fails inside
+    not ok 2 - fails inside
+      ---
+      duration_ms: 1.621198
+      type: 'test'
+      location: '/tmp/1901k/node/suite/test/a.test.ts:5:3'
+      failureType: 'testCodeFailure'
+      error: |-
+        Expected values to be strictly deep-equal:
+        + actual - expected
+        
+          {
+        +   holders: 2
+        -   holders: 1
+          }
+        
+      code: 'ERR_ASSERTION'
+      name: 'AssertionError'
+      expected:
+        holders: 1
+      actual:
+        holders: 2
+      operator: 'deepStrictEqual'
+      stack: |-
+        TestContext.<anonymous> (file:///tmp/1901k/node/suite/test/a.test.ts:5:37)
+        Test.runInAsyncScope (node:async_hooks:226:14)
+        Test.run (node:internal/test_runner/test:1402:25)
+        Suite.processPendingSubtests (node:internal/test_runner/test:974:18)
+        Test.postRun (node:internal/test_runner/test:1542:19)
+        Test.run (node:internal/test_runner/test:1467:12)
+        async Promise.all (index 0)
+        async Suite.run (node:internal/test_runner/test:1905:7)
+        async startSubtestAfterBootstrap (node:internal/test_runner/harness:387:3)
+      ...
+    1..2
+not ok 1 - the seat
+  ---
+  duration_ms: 3.295664
+  type: 'suite'
+  location: '/tmp/1901k/node/suite/test/a.test.ts:3:1'
+  failureType: 'subtestsFailed'
+  error: '1 subtest failed'
+  code: 'ERR_TEST_FAILURE'
+  ...
+1..1
+# tests 2
+# suites 1
+# pass 1
+# fail 1
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 115.948112

go/buildstep/conformance/captured/node/syntax.console

@@ -0,0 +1,2 @@
+npm notice run test
+npm notice run node --test --experimental-strip-types 'test/*.test.ts'

go/buildstep/conformance/captured/node/syntax.tap

@@ -0,0 +1,47 @@
+TAP version 13
+# Subtest: passes in the first file
+ok 1 - passes in the first file
+  ---
+  duration_ms: 0.637465
+  type: 'test'
+  ...
+# node:internal/modules/run_main:111
+#     triggerUncaughtException(
+#     ^
+# file:///tmp/1901k/node/syntax/test/b.test.ts:2
+# test('never loads', () => {
+# SyntaxError [ERR_INVALID_TYPESCRIPT_SYNTAX]: Expected ',', got '<eof>'
+#     at parseTypeScript (node:internal/modules/typescript:61:36)
+#     at processTypeScriptCode (node:internal/modules/typescript:129:37)
+#     at Object.stripTypeScriptModuleTypes (node:internal/modules/typescript:172:22)
+#     at stripTypeScriptModuleTypes (node:internal/modules/esm/translators:35:49)
+#     at ModuleLoader.<anonymous> (node:internal/modules/esm/translators:688:29)
+#     at \#translate (node:internal/modules/esm/loader:441:20)
+#     at afterLoad (node:internal/modules/esm/loader:509:29)
+#     at ModuleLoader.loadAndTranslate (node:internal/modules/esm/loader:514:12)
+#     at \#getOrCreateModuleJobAfterResolve (node:internal/modules/esm/loader:567:36)
+#     at afterResolve (node:internal/modules/esm/loader:614:52) {
+#   code: 'ERR_INVALID_TYPESCRIPT_SYNTAX'
+# }
+# Node.js v26.12.1
+# Subtest: test/b.test.ts
+not ok 2 - test/b.test.ts
+  ---
+  duration_ms: 87.629815
+  type: 'test'
+  location: '/tmp/1901k/node/syntax/test/b.test.ts:1:1'
+  failureType: 'testCodeFailure'
+  exitCode: 1
+  signal: ~
+  error: 'test failed'
+  code: 'ERR_TEST_FAILURE'
+  ...
+1..2
+# tests 2
+# suites 0
+# pass 1
+# fail 1
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 106.551435

go/buildstep/conformance/captured/node/timeout.console

@@ -0,0 +1,2 @@
+npm notice run test
+npm notice run node --test --experimental-strip-types 'test/*.test.ts'

go/buildstep/conformance/captured/node/timeout.tap

@@ -0,0 +1,26 @@
+TAP version 13
+# Subtest: passes before the wait
+ok 1 - passes before the wait
+  ---
+  duration_ms: 0.683015
+  type: 'test'
+  ...
+# Subtest: waits for an answer that never comes
+not ok 2 - waits for an answer that never comes
+  ---
+  duration_ms: 201.103775
+  type: 'test'
+  location: '/tmp/1901k/node/timeout/test/a.test.ts:3:1'
+  failureType: 'testTimeoutFailure'
+  error: 'test timed out after 200ms'
+  code: 'ERR_TEST_FAILURE'
+  ...
+1..2
+# tests 2
+# suites 0
+# pass 1
+# fail 0
+# cancelled 1
+# skipped 0
+# todo 0
+# duration_ms 308.920061

go/buildstep/conformance/captured/node/two-files.console

@@ -0,0 +1,2 @@
+npm notice run test
+npm notice run node --test --experimental-strip-types 'test/*.test.ts'

go/buildstep/conformance/captured/node/two-files.tap

@@ -0,0 +1,49 @@
+TAP version 13
+# Subtest: passes in the first file
+ok 1 - passes in the first file
+  ---
+  duration_ms: 0.740124
+  type: 'test'
+  ...
+# judged against the seat as it stands
+# Subtest: passes in the second file first
+ok 2 - passes in the second file first
+  ---
+  duration_ms: 0.916463
+  type: 'test'
+  ...
+# Subtest: fails in the second file
+not ok 3 - fails in the second file
+  ---
+  duration_ms: 1.719236
+  type: 'test'
+  location: '/tmp/1901k/node/two-files/test/b.test.ts:4:1'
+  failureType: 'testCodeFailure'
+  error: |-
+    one plus one is not three
+    
+    2 !== 3
+    
+  code: 'ERR_ASSERTION'
+  name: 'AssertionError'
+  expected: 3
+  actual: 2
+  operator: 'strictEqual'
+  stack: |-
+    TestContext.<anonymous> (file:///tmp/1901k/node/two-files/test/b.test.ts:6:10)
+    Test.runInAsyncScope (node:async_hooks:226:14)
+    Test.run (node:internal/test_runner/test:1402:25)
+    Test.processPendingSubtests (node:internal/test_runner/test:974:18)
+    Test.postRun (node:internal/test_runner/test:1542:19)
+    Test.run (node:internal/test_runner/test:1467:12)
+    async startSubtestAfterBootstrap (node:internal/test_runner/harness:387:3)
+  ...
+1..3
+# tests 3
+# suites 0
+# pass 2
+# fail 1
+# cancelled 0
+# skipped 0
+# todo 0
+# duration_ms 135.931121

go/buildstep/conformance/captured/tsc/typeerror.console

@@ -0,0 +1 @@
+seat.ts(2,14): error TS2322: Type 'number' is not assignable to type 'string'.

go/buildstep/conformance/conformance.go

@@ -0,0 +1,201 @@
+// Package conformance is the kit every build module's tests run (novox/hq issue 1901, its thorough fix): real output of
+// the test runners, captured with the build nodes' own toolchains (captured/README.md), and what a build module must say
+// of each failure in it under the failure contract (buildstep.Failure). A build module's test calls Run with its own parse
+// path, the code that turns a runner's output into the failures of its test result; the kit fails the test when a
+// failure is not named, its cause is missing or wrong, or a passing line stands in its place.
+//
+// A catalogue check (mesh-catalog checks/failurekit) refuses a build module with a test step whose tests do not call Run,
+// and any build module whose tests do not call LeftRunning, the kit's case of steps a previous process left running
+// (leftrunning.go, issue 1890).
+package conformance
+
+import (
+	"embed"
+	"fmt"
+	"strings"
+	"testing"
+
+	"git.novox.be/novox/mesh-sdk/go/buildstep"
+)
+
+// The runners the kit holds output of.
+const (
+	// GoTest is `go test -json -count=1 ./...`: Output.Stdout is its output (go1.27.3).
+	GoTest = "go test -json"
+	// NodeTest is a package's `npm test` running `node --test --experimental-strip-types` with
+	// NODE_OPTIONS=buildstep.NodeTestOptions(<file>): Output.Report is the TAP file, Output.Stdout the script's own output
+	// and stderr, Output.Dir the package's directory as it was captured (node v26.12.1, npm 12.2.1).
+	NodeTest = "node --test"
+	// TypeCheck is tsc's type-check (`tsc --noEmit`, typescript 5.9.3): Output.Stdout is what it wrote; its failure
+	// names the test "type-check".
+	TypeCheck = "tsc"
+)
+
+// Output is one captured run of a runner, as a build module's parse path takes it.
+type Output struct {
+	Stdout, Stderr string
+	// Report is what a runner wrote to a report file of its own (node --test's TAP), "" for the others.
+	Report string
+	// Dir is the directory the run was captured in: a node test's file is said relative to it.
+	Dir string
+}
+
+// Parse is a build module's own parse path: the failures its test result would carry for one run that failed.
+type Parse func(Output) []buildstep.Failure
+
+// Case is one captured run and what its failure must say.
+type Case struct {
+	Name   string
+	Runner string
+	// Test is the failing test the failure names (for a package that stopped, the tests that were running; "" for none).
+	Test string
+	// File, when set, is where the failing test is.
+	File string
+	// Cause holds what the failure's cause must contain.
+	Cause []string
+	// Passing are the names of tests that passed in the run, and what they logged: no failure's words may hold them.
+	Passing []string
+}
+
+//go:embed captured
+var captured embed.FS
+
+// Cases are the kit's cases of a runner.
+func Cases(runner string) []Case {
+	var out []Case
+	for _, c := range cases {
+		if c.Runner == runner {
+			out = append(out, c)
+		}
+	}
+	return out
+}
+
+var cases = []Case{
+	{Name: "passfirst", Runner: GoTest, Test: "TestTheSecondPackageFails", Cause: []string{"the seat has 2 holders, want 1"},
+		Passing: []string{"TestTheFirstPackagePasses", "TestTheSecondPackagePassesFirst"}},
+	{Name: "subtests", Runner: GoTest, Test: "TestTheTable/fails", Cause: []string{"got 3 machines, want 4"}, Passing: []string{"TestTheTable/passes"}},
+	{Name: "logthenfatal", Runner: GoTest, Test: "TestThree", Cause: []string{"3 subscription(s) derive to a subject no emitter owns:"}},
+	{Name: "panicking", Runner: GoTest, Test: "TestPanics", Cause: []string{"panic: assignment to entry in nil map"}},
+	{Name: "timeout", Runner: GoTest, Test: "TestWaitsForever", Cause: []string{"panic: test timed out after 2s", "TestWaitsForever"}},
+	{Name: "deeptimeout", Runner: GoTest, Test: "TestHoldsTheSeat, TestWaitsForTheBus", Cause: []string{"panic: test timed out after 2s", "TestHoldsTheSeat", "TestWaitsForTheBus"}},
+	{Name: "buildfail", Runner: GoTest, Cause: []string{`cannot use "seat" (untyped string constant) as int value`}},
+	{Name: "exiting", Runner: GoTest, Test: "TestExits", Cause: []string{"exited", "TestExits"}},
+	{Name: "killed", Runner: GoTest, Test: "TestKilled", Cause: []string{"signal: killed"}},
+	{Name: "passthenfail", Runner: GoTest, Cause: []string{"panic: the bus closed after the tests: nats: connection closed"}},
+	{Name: "mainexit", Runner: GoTest, Cause: []string{"passed", "exited"}},
+	{Name: "race", Runner: GoTest, Test: "TestRacesOnTheSeat", Cause: []string{"DATA RACE", "Write at", "example.com/race.TestRacesOnTheSeat.func1()", "p_test.go:13", "created at example.com/race.TestRacesOnTheSeat()"}},
+	{Name: "subpanic", Runner: GoTest, Test: "TestTable/panics", Cause: []string{"panic: assignment to entry in nil map"}, Passing: []string{"TestTable/passes"}},
+	{Name: "racemain", Runner: GoTest, Cause: []string{"DATA RACE", "Write at", "example.com/racemain.TestMain.func1()", "p_test.go:15", "created at example.com/racemain.TestMain()"}},
+
+	{Name: "two-files", Runner: NodeTest, Test: "fails in the second file", File: "test/b.test.ts:4:1", Cause: []string{"one plus one is not three"},
+		Passing: []string{"passes in the first file", "passes in the second file first"}},
+	{Name: "suite", Runner: NodeTest, Test: "fails inside", File: "test/a.test.ts:5:3", Cause: []string{"Expected values to be strictly deep-equal:"},
+		Passing: []string{"passes inside"}},
+	{Name: "crash", Runner: NodeTest, Test: "test/b.test.ts", File: "test/b.test.ts:1:1", Cause: []string{"the bus closed under the test"},
+		Passing: []string{"passes before the crash"}},
+	{Name: "logcrash", Runner: NodeTest, Test: "test/b.test.ts", File: "test/b.test.ts:1:1", Cause: []string{"the bus closed under the test"},
+		Passing: []string{"passes and logs", "retrying after Error: the store was not ready yet"}},
+	{Name: "timeout", Runner: NodeTest, Test: "waits for an answer that never comes", File: "test/a.test.ts:3:1", Cause: []string{"test timed out after 200ms"},
+		Passing: []string{"passes before the wait"}},
+	{Name: "syntax", Runner: NodeTest, Test: "test/b.test.ts", File: "test/b.test.ts:1:1", Cause: []string{"SyntaxError", "Expected ',', got '<eof>'"},
+		Passing: []string{"passes in the first file"}},
+
+	{Name: "typeerror", Runner: TypeCheck, Test: "type-check", Cause: []string{"seat.ts(2,14): error TS2322: Type 'number' is not assignable to type 'string'."}},
+}
+
+// Load is the captured output of a case.
+func Load(c Case) (Output, error) {
+	switch c.Runner {
+	case GoTest:
+		b, err := captured.ReadFile("captured/go/" + c.Name + ".jsonl")
+		return Output{Stdout: string(b)}, err
+	case NodeTest:
+		report, err := captured.ReadFile("captured/node/" + c.Name + ".tap")
+		if err != nil {
+			return Output{}, err
+		}
+		console, err := captured.ReadFile("captured/node/" + c.Name + ".console")
+		return Output{Report: string(report), Stdout: string(console), Dir: "/tmp/1901k/node/" + c.Name}, err
+	default:
+		b, err := captured.ReadFile("captured/tsc/" + c.Name + ".console")
+		return Output{Stdout: string(b), Dir: "/tmp/1901k/tsc/" + c.Name}, err
+	}
+}
+
+// Run runs every case of runner through parse, each as a subtest, and fails a case whose failure does not keep the
+// contract: exactly one failure, naming the failing test (and its file, where the runner says it), with a cause that
+// holds what the case says and is no passing line, an output that starts with the cause, stays within its bound and
+// holds no passing line and no passing test's name.
+func Run(t *testing.T, runner string, parse Parse) {
+	t.Helper()
+	cs := Cases(runner)
+	if len(cs) == 0 {
+		t.Fatalf("the kit holds no case of the runner %q", runner)
+	}
+	for _, c := range cs {
+		t.Run(c.Name, func(t *testing.T) {
+			out, err := Load(c)
+			if err != nil {
+				t.Fatal(err)
+			}
+			for _, problem := range Judge(c, parse(out)) {
+				t.Error(problem)
+			}
+		})
+	}
+}
+
+// Judge says what is wrong with the failures a parse path made of a case; nothing when they keep the contract.
+func Judge(c Case, failed []buildstep.Failure) []string {
+	var problems []string
+	say := func(s string) { problems = append(problems, c.Runner+" "+c.Name+": "+s) }
+	if len(failed) != 1 {
+		say(fmt.Sprintf("want one failure, got %d: %s", len(failed), describe(failed)))
+		if len(failed) == 0 {
+			return problems
+		}
+	}
+	f := failed[0]
+	if f.Test != c.Test {
+		say("the failure names the test " + quote(f.Test) + ", want " + quote(c.Test))
+	}
+	if c.File != "" && f.File != c.File {
+		say("the failure's file is " + quote(f.File) + ", want " + quote(c.File))
+	}
+	if why := buildstep.Hidden(f); why != "" {
+		say("the failure hides its cause: " + why)
+	}
+	for _, want := range c.Cause {
+		if !strings.Contains(f.Cause, want) {
+			say("the cause " + quote(f.Cause) + " does not hold " + quote(want))
+		}
+	}
+	if first := strings.SplitN(f.Output, "\n", 2)[0]; strings.TrimSpace(first) != strings.TrimSpace(f.Cause) {
+		say("the output starts with " + quote(first) + ", not with the cause")
+	}
+	if len(f.Output) > buildstep.OutputBytes+buildstep.LineBytes+64 {
+		say(fmt.Sprintf("the output holds %d bytes, over its bound", len(f.Output)))
+	}
+	for _, l := range strings.Split(f.Output, "\n") {
+		if buildstep.PassingLine(l) {
+			say("the output keeps the passing line " + quote(l))
+		}
+	}
+	for _, p := range c.Passing {
+		if strings.Contains(f.Output, p+"\n") || strings.HasSuffix(f.Output, p) || strings.Contains(f.Cause, p) || strings.Contains(f.Output, "- "+p) {
+			say("the failure's words hold the passing test " + quote(p))
+		}
+	}
+	return problems
+}
+
+func describe(failed []buildstep.Failure) string {
+	var s []string
+	for _, f := range failed {
+		s = append(s, quote(f.Package+" "+f.Test)+" ("+quote(f.Cause)+")")
+	}
+	return strings.Join(s, ", ")
+}
+
+func quote(s string) string { return fmt.Sprintf("%q", s) }

go/buildstep/conformance/conformance_test.go

@@ -0,0 +1,167 @@
+package conformance
+
+import (
+	"context"
+	"encoding/json"
+	"strings"
+	"testing"
+	"time"
+
+	"git.novox.be/novox/mesh-sdk/go/buildstep"
+)
+
+// The failure contract (issue 1901): the SDK's own parsers keep it on every captured case of the kit (1901/AC6); the
+// kit refuses what the build modules sent before it; the contract's own rules; and the Go reader's older guarantees.
+func TestTheFailureContract(t *testing.T) {
+	t.Run("the SDK parsers keep it", func(t *testing.T) {
+		Run(t, GoTest, func(o Output) []buildstep.Failure { return buildstep.ReadGoTest(o.Stdout, ".").Failed })
+		Run(t, NodeTest, func(o Output) []buildstep.Failure { return buildstep.ReadTAP(".", "test", o.Dir, o.Report, o.Stdout) })
+		Run(t, TypeCheck, func(o Output) []buildstep.Failure {
+			return []buildstep.Failure{buildstep.ConsoleFailure(".", "type-check", o.Stdout+o.Stderr)}
+		})
+	})
+
+	// 1890/AC7: the SDK's start sweep keeps the left-running case, and the kit refuses a sweep that ends nothing or ends
+	// everything.
+	t.Run("the left-running case", func(t *testing.T) {
+		LeftRunning(t, func(ctx context.Context, scan buildstep.Scan, node string, before time.Time, logf func(string, ...any)) {
+			buildstep.EndStaleAtStart(ctx, scan, node, before, logf)
+		})
+		if p := JudgeLeftRunning(func(context.Context, buildstep.Scan, string, time.Time, func(string, ...any)) {}); len(p) != 11 {
+			t.Errorf("a sweep that ends nothing: %d problems, want 11 (three steps not ended and unsaid, one owner unnamed, two asks not deleted and unsaid):\n%s", len(p), strings.Join(p, "\n"))
+		}
+		wrongNode := func(ctx context.Context, scan buildstep.Scan, _ string, before time.Time, logf func(string, ...any)) {
+			buildstep.EndStaleAtStart(ctx, scan, "kitother", before, logf)
+		}
+		if p := JudgeLeftRunning(wrongNode); len(p) == 0 {
+			t.Error("a sweep of another node's steps is not refused")
+		}
+	})
+
+	// node's output cut to its first fifteen lines with no cause, whose first line was a passing test of the first file
+	// (mesh-build-node's lines() before the contract), and a Go failure keeping its first line.
+	t.Run("the kit refuses a failure that hides its cause", func(t *testing.T) {
+		firstLines := func(s string) string {
+			var keep []string
+			for _, l := range strings.Split(s, "\n") {
+				if l = strings.TrimSpace(l); l != "" && len(keep) < 15 {
+					keep = append(keep, l)
+				}
+			}
+			return strings.Join(keep, "\n")
+		}
+		for _, c := range []struct {
+			runner, name string
+			old          func(Output) []buildstep.Failure
+		}{
+			{NodeTest, "two-files", func(o Output) []buildstep.Failure {
+				return []buildstep.Failure{{Package: ".", Test: "test", Output: firstLines(o.Report)}}
+			}},
+			{GoTest, "passfirst", func(o Output) []buildstep.Failure {
+				return []buildstep.Failure{{Package: "example.com/passfirst/b", Test: "TestTheSecondPackageFails", Cause: "ok  \texample.com/passfirst/a", Output: "--- PASS: TestTheSecondPackagePassesFirst"}}
+			}},
+		} {
+			for _, k := range Cases(c.runner) {
+				if k.Name != c.name {
+					continue
+				}
+				out, err := Load(k)
+				if err != nil {
+					t.Fatal(err)
+				}
+				if problems := Judge(k, c.old(out)); len(problems) == 0 {
+					t.Errorf("%s %s: the kit passed a failure that hides its cause", c.runner, c.name)
+				}
+			}
+		}
+	})
+
+	// What a passing line is (a test's own line starting "ok " is none), when a failure hides its cause, and that a long
+	// failure keeps its last lines within the bound and starts with a real line for an older checker, which reads only
+	// the first line of the output cut to 120 characters (1901/AC1, AC3).
+	t.Run("its rules", func(t *testing.T) {
+		for _, c := range []struct {
+			line    string
+			passing bool
+		}{
+			{"✔ the same merge has the same id (8.0ms)", true}, {"ok 1 - passes", true}, {"    ok 3 - inside", true},
+			{"ok  \texample.com/a\t0.01s", true}, {"PASS", true}, {"--- PASS: TestA (0.00s)", true},
+			{"    --- PASS: TestA/sub (0.00s)", true}, {"✖ fails (1ms)", false}, {"not ok 2 - fails", false},
+			{"okay, the seat moved", false}, {"ok then: the store refused the write", false}, {"ok  the seat", false}, {"FAIL", false},
+		} {
+			if buildstep.PassingLine(c.line) != c.passing {
+				t.Errorf("PassingLine(%q) = %v, want %v", c.line, !c.passing, c.passing)
+			}
+		}
+		if buildstep.Hidden(buildstep.Failure{Cause: "the seat has 2 holders"}) != "" || buildstep.Hidden(buildstep.Failure{}) == "" ||
+			buildstep.Hidden(buildstep.Failure{Cause: "✔ passes (1ms)"}) == "" {
+			t.Error("Hidden does not tell a real cause from none and from a passing line")
+		}
+		var lines []string
+		for i := 0; i < 400; i++ {
+			lines = append(lines, "    x_test.go:1: log line "+strings.Repeat("y", 40))
+		}
+		lines = append(lines, "    x_test.go:9: the real cause", "--- FAIL: TestX (0.00s)")
+		oldFirst := func(out string) string { // the older checker's rule (judge.go firstLine before issue 1901)
+			for _, l := range strings.Split(out, "\n") {
+				if l = strings.TrimSpace(l); l != "" {
+					return l[:min(len(l), 120)]
+				}
+			}
+			return ""
+		}
+		for _, cause := range []string{"the real cause", ""} {
+			out := buildstep.Clip(lines, cause)
+			if len(out) > buildstep.OutputBytes+buildstep.LineBytes {
+				t.Errorf("1901/AC1: kept %d bytes, bound is %d", len(out), buildstep.OutputBytes)
+			}
+			if !strings.HasSuffix(out, "the real cause\n--- FAIL: TestX (0.00s)") || !strings.Contains(out, "\n... (") {
+				t.Errorf("1901/AC1: the last lines or the marker are lost: %q...%q", out[:40], out[len(out)-60:])
+			}
+			if got := oldFirst(out); strings.HasPrefix(got, "... (") || got == "" || (cause != "" && got != cause) {
+				t.Errorf("1901/AC3: cause %q: an older checker would read %q", cause, got)
+			}
+		}
+	})
+
+	// The Go reader (moved from mesh-build-go): an older checker, which knows no "cause" field, still reads a failure and
+	// gets at least the lines it kept (1901/AC3); a test's indented log line saying "panic:" is not the cause, go's own at
+	// column 0 is (1901/AC4); and each package counts its own skipped tests (issue 890).
+	t.Run("the Go reader", func(t *testing.T) {
+		read := func(name string) string {
+			raw, err := captured.ReadFile("captured/go/" + name + ".jsonl")
+			if err != nil {
+				t.Fatal(err)
+			}
+			return string(raw)
+		}
+		b, _ := json.Marshal(buildstep.ReadGoTest(read("logthenfatal"), ".").Failed)
+		var old []struct {
+			Output string `json:"output,omitempty"`
+		}
+		if err := json.Unmarshal(b, &old); err != nil || len(old) != 1 || !strings.Contains(old[0].Output, "judged against") || !strings.Contains(old[0].Output, "3 subscription(s)") {
+			t.Errorf("1901/AC3: an older checker reads %+v, %v", old, err)
+		}
+		lines := strings.SplitAfter(read("deeptimeout"), "\n")
+		added := `{"Action":"output","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat","Output":"    p_test.go:9: the child said:\n"}` + "\n" +
+			`{"Action":"output","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat","Output":"        panic: child retried and recovered\n"}` + "\n" +
+			`{"Action":"output","Package":"example.com/deeptimeout","Test":"TestHoldsTheSeat","Output":"        WARNING: DATA RACE\n"}` + "\n"
+		if got := buildstep.ReadGoTest(strings.Join(lines[:10], "")+added+strings.Join(lines[10:], ""), ".").Failed; len(got) != 1 || !strings.HasPrefix(got[0].Cause, "panic: test timed out after 2s") {
+			t.Errorf("1901/AC4: failures = %+v, want the timeout's panic as the cause", got)
+		}
+		res := buildstep.ReadGoTest(`{"Action":"run","Package":"m/a","Test":"TestA"}
+{"Action":"skip","Package":"m/a","Test":"TestA","Elapsed":0}
+{"Action":"run","Package":"m/b","Test":"TestB"}
+{"Action":"pass","Package":"m/b","Test":"TestB","Elapsed":0}
+{"Action":"pass","Package":"m/a","Elapsed":0}
+{"Action":"pass","Package":"m/b","Elapsed":0}
+`, ".")
+		got := map[string]int{}
+		for _, p := range res.Packages {
+			got[p.Package] = p.Skipped
+		}
+		if res.Skipped != 1 || got["m/a"] != 1 || got["m/b"] != 0 {
+			t.Errorf("skipped = %d, per package %v, want 1 with m/a 1 and m/b 0", res.Skipped, got)
+		}
+	})
+}

go/buildstep/conformance/leftrunning.go

@@ -0,0 +1,212 @@
+package conformance
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"sort"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	stdio "git.novox.be/novox/mesh-sdk/go"
+	"git.novox.be/novox/mesh-sdk/go/buildstep"
+	"git.novox.be/novox/mesh-sdk/go/delivery"
+)
+
+// **A step left running by a previous process** (novox/hq issue 1890, note 21): when a delivery replaced mesh-build-go
+// on a node while a check ask ran, the new process's start sweep let the ask's key stand as running, and it held one
+// of the node's build slots until a hand end. Every build module runs this case (LeftRunning) through the start sweep
+// its main runs: the hand-started steps a previous process left are ended at once and loud, its asks' keys deleted (the
+// stream redelivers the ask, novox/hq ADR 0525 §6, and its asker keeps waiting for that), what this process runs kept. A
+// catalogue check (mesh-catalog checks/failurekit) refuses a build module whose tests do not call LeftRunning.
+
+// Sweep is a build module's own start sweep, as its main runs it once at its start: it ends node's steps in scan that
+// no process of the module runs any more (buildstep.EndStaleAtStart, here with the runtime already serving), before
+// being the start of the process, saying each end with logf.
+type Sweep func(ctx context.Context, scan buildstep.Scan, node string, before time.Time, logf func(string, ...any))
+
+// LeftNode is the node the case's steps are of.
+const LeftNode = "kitnode"
+
+// leftCase is one step in the steps state before the sweep, and whether the sweep must end it.
+type leftCase struct {
+	id, tool, owner, state string
+	node                   string
+	age                    time.Duration // started this long before the process began (negative: after it)
+	ended                  bool
+	deleted                bool // a gone process's ask: its key is deleted, not ended
+}
+
+// gone is a previous process's owner on the same node.
+var gone = "b00t-of-the-kit.4242.mvp0000"
+
+func leftCases() []leftCase {
+	return []leftCase{
+		{id: "mvpwlkzi7e6ca8", tool: "check ask", owner: gone, age: 5 * time.Minute, deleted: true}, // note 21's ghost
+		{id: "mvpwlkzi7e6ca9", tool: "delivery ask", owner: gone, age: -time.Second, deleted: true},
+		{id: "gonehand1", tool: "build_x_test", owner: gone, age: time.Minute, ended: true},
+		{id: "oldhand1", tool: "build_x_fetch", age: time.Hour, ended: true},                // no owner: an older build's
+		{id: "mvpwlkzi7e6caa", tool: "check ask", age: time.Hour, ended: true},              // no owner, past the bound
+		{id: "mvpwlkzi7e6cab", tool: "check ask", age: 5 * time.Minute},                     // no owner, the stream's still
+		{id: "mvpwlkzi7e6cac", tool: "check ask", owner: buildstep.Owner, age: time.Minute}, // this process's
+		{id: "minehand1", tool: "build_x_test", owner: buildstep.Owner, age: -time.Second},
+		{id: "donehand1", tool: "build_x_test", owner: gone, age: time.Hour, state: delivery.StepPassed},
+		{id: "otherhand1", tool: "build_x_test", owner: gone, age: time.Hour, node: "kitother"},
+	}
+}
+
+// LeftRunning runs the case through sweep and fails the test for each step the sweep ended or kept wrongly, or ended
+// without saying it.
+func LeftRunning(t *testing.T, sweep Sweep) {
+	t.Helper()
+	for _, problem := range JudgeLeftRunning(sweep) {
+		t.Error(problem)
+	}
+}
+
+// JudgeLeftRunning says what is wrong with what sweep did to the case; nothing when it keeps the rule.
+func JudgeLeftRunning(sweep Sweep) []string {
+	st := &steps{vals: map[string][]byte{}, revs: map[string]uint64{}}
+	before := time.Now()
+	for _, c := range leftCases() {
+		node, state := c.node, c.state
+		if node == "" {
+			node = LeftNode
+		}
+		if state == "" {
+			state = delivery.StepRunning
+		}
+		key, _ := delivery.StepKey(node, c.id)
+		raw, err := delivery.EncodeStep(delivery.Step{ID: c.id, Tool: c.tool, Node: node, State: state, Started: before.Add(-c.age).UTC(), Owner: c.owner})
+		if err != nil {
+			return []string{"the kit's step " + c.id + ": " + err.Error()}
+		}
+		st.set(key, raw)
+	}
+	served := make(chan struct{})
+	close(served)
+	was := buildstep.StaleServed
+	buildstep.StaleServed = func() <-chan struct{} { return served }
+	defer func() { buildstep.StaleServed = was }()
+	var mu sync.Mutex
+	var said []string
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	sweep(ctx, st.scan(), LeftNode, before, func(f string, a ...any) {
+		mu.Lock()
+		defer mu.Unlock()
+		said = append(said, fmt.Sprintf(f, a...))
+	})
+	mu.Lock()
+	log := strings.Join(said, "\n")
+	mu.Unlock()
+	var problems []string
+	for _, c := range leftCases() {
+		node := c.node
+		if node == "" {
+			node = LeftNode
+		}
+		key, _ := delivery.StepKey(node, c.id)
+		raw := st.get(key)
+		if c.deleted {
+			if raw != nil {
+				problems = append(problems, fmt.Sprintf("left running: the ask %s of the gone owner %q is still held after the sweep (%s); "+
+					"its key is deleted, never ended: the stream redelivers it (ADR 0525 §6)", key, c.owner, raw))
+			}
+			if !strings.Contains(log, key) || !strings.Contains(log, c.owner) {
+				problems = append(problems, "left running: the delete of "+key+" is not said with its owner "+c.owner)
+			}
+			continue
+		}
+		if raw == nil {
+			problems = append(problems, "left running: the step "+key+" is gone after the sweep, want it kept or ended")
+			continue
+		}
+		s, err := delivery.DecodeStep(raw)
+		if err != nil {
+			problems = append(problems, key+": "+err.Error())
+			continue
+		}
+		want := c.state
+		if want == "" {
+			want = delivery.StepRunning
+		}
+		if c.ended {
+			want = delivery.StepFailed
+		}
+		if s.State != want {
+			problems = append(problems, fmt.Sprintf("left running: the step %s (%s, owner %q, %s before the start) is %s after the sweep, want %s", key, c.tool, c.owner, c.age, s.State, want))
+		}
+		if c.ended && !strings.Contains(log, key) {
+			problems = append(problems, "left running: the end of "+key+" is not said")
+		}
+		if c.ended && c.owner != "" && !strings.Contains(log, c.owner) {
+			problems = append(problems, "left running: the end of "+key+" does not name its owner "+c.owner)
+		}
+	}
+	sort.Strings(problems)
+	return problems
+}
+
+// steps is a steps state with revisions, whose Update lands only at the revision read (stdio.ErrChanged otherwise).
+type steps struct {
+	mu   sync.Mutex
+	vals map[string][]byte
+	revs map[string]uint64
+}
+
+func (s *steps) set(key string, raw []byte) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	s.vals[key], s.revs[key] = raw, s.revs[key]+1
+}
+
+func (s *steps) get(key string) []byte {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	return s.vals[key]
+}
+
+func (s *steps) scan() buildstep.Scan {
+	return buildstep.Scan{
+		Keys: func() ([]string, error) {
+			s.mu.Lock()
+			defer s.mu.Unlock()
+			var out []string
+			for k := range s.vals {
+				out = append(out, k)
+			}
+			return out, nil
+		},
+		Get: func(key string) (json.RawMessage, uint64, error) {
+			s.mu.Lock()
+			defer s.mu.Unlock()
+			return s.vals[key], s.revs[key], nil
+		},
+		Delete: func(key string, revision uint64) error {
+			s.mu.Lock()
+			defer s.mu.Unlock()
+			if s.revs[key] != revision {
+				return stdio.ErrChanged
+			}
+			delete(s.vals, key)
+			s.revs[key]++
+			return nil
+		},
+		Update: func(key string, value any, revision uint64) (uint64, error) {
+			raw, err := json.Marshal(value)
+			if err != nil {
+				return 0, err
+			}
+			s.mu.Lock()
+			defer s.mu.Unlock()
+			if s.revs[key] != revision {
+				return 0, stdio.ErrChanged
+			}
+			s.vals[key], s.revs[key] = raw, revision+1
+			return revision + 1, nil
+		},
+	}
+}

go/buildstep/failure.go

@@ -0,0 +1,147 @@
+package buildstep
+
+// The failure contract of a build step's test level (novox/hq issue 1901, its thorough fix): what a build module says of
+// each test that failed, the same for every language. Each build module used to parse its own test runner's output, and
+// a fix in one never reached the others: a failed Go test kept a t.Logf line, a failed node --test run kept a passing
+// '✔' line of its first file. The parsers that fill the contract live here (gotest.go, tap.go) and the conformance kit
+// (package conformance) holds every build module to them with captured runner output.
+
+import (
+	"fmt"
+	"strings"
+
+	"git.novox.be/novox/mesh-sdk/go/sdkversion"
+)
+
+// Failure is one test that failed, or a package or file that failed with no test to name (a build that failed, a test
+// program that panicked, a test file that did not load). The JSON names are the ones mesh-build-go and the checker have
+// always used; File is new and an older reader ignores it.
+type Failure struct {
+	// Package is the Go package's import path, or the TypeScript package's directory in the workspace.
+	Package string `json:"package"`
+	// Test names the failing test, or the tests that were running when the program stopped; "" when none can be named.
+	Test string `json:"test,omitempty"`
+	// File is where the failing test is (a Go test's file and line is in its Cause; node names the test's file:line:col).
+	File string `json:"file,omitempty"`
+	// Cause is the one line that says why: the assertion's or the error's first line, a "panic:" line, a build's first
+	// error, or words saying how the program stopped. **Never empty, and never a passing line** (PassingLine).
+	Cause string `json:"cause,omitempty"`
+	// Output is the failing test's own output, its last lines up to OutputBytes, Cause first: an older checker reads
+	// only its first line.
+	Output string `json:"output,omitempty"`
+}
+
+// OutputBytes is the most a failure keeps of its output, and LineBytes the most of one line: four kilobytes holds a long
+// assertion message and stays far under a bus message's or a verdict's bound.
+const (
+	OutputBytes = 4096
+	LineBytes   = 1024
+)
+
+// By names a build module and the SDK it was built with, for a result's "by": the checker names it when a failure hides
+// its cause ("the build module hid the failure (<by>)").
+func By(module string) string {
+	return module + " with mesh-sdk " + sdkversion.Version()
+}
+
+// PassingLine says a line is a test runner's word for a test or a package that passed: node's '✔', TAP's "ok N" (at any
+// indent), go test's "ok  \t<pkg>", "PASS" and "--- PASS". A line of a test's own that starts "ok " is none of these. Such a line is never a failure's cause, nor part of a failure's output.
+func PassingLine(l string) bool {
+	if strings.HasPrefix(l, "ok  \t") { // go test's package line, at column 0
+		return true
+	}
+	t := strings.TrimSpace(l)
+	switch {
+	case t == "PASS", strings.HasPrefix(t, "✔"), strings.HasPrefix(t, "--- PASS"):
+		return true
+	}
+	return tapOk(t)
+}
+
+// Hidden says how a failure hides why it failed, or "" when it does not: it has no cause, or its cause is a passing line.
+// The checker says it loudly (issue 1901): a build module that sends such a failure does not keep the contract.
+func Hidden(f Failure) string {
+	c := strings.TrimSpace(f.Cause)
+	switch {
+	case c == "":
+		return "it sent no cause"
+	case PassingLine(c):
+		return fmt.Sprintf("its cause is a passing line (%q)", CutLine(c))
+	}
+	return ""
+}
+
+// Clip joins the last lines of a failure's output that fit OutputBytes, each cut to LineBytes, and says how many earlier
+// lines it left out. **Its first line is the cause**, put ahead when the kept lines do not start with it, or, with no
+// cause and lines left out, the first non-empty line, then the marker: an older checker reads only the first line.
+// Passing lines are dropped.
+func Clip(lines []string, cause string) string {
+	own := make([]string, 0, len(lines))
+	for _, l := range lines {
+		if !PassingLine(l) {
+			own = append(own, l)
+		}
+	}
+	lines = own
+	size, from := 0, len(lines)
+	for from > 0 {
+		n := len(CutLine(lines[from-1])) + 1
+		if size+n > OutputBytes && from < len(lines) {
+			break
+		}
+		size += n
+		from--
+	}
+	kept := make([]string, 0, len(lines)-from+2)
+	head := strings.TrimSpace(cause)
+	for i := 0; head == "" && i < from; i++ {
+		head = strings.TrimSpace(lines[i])
+	}
+	if head != "" && (from > 0 || len(lines) == 0 || strings.TrimSpace(lines[from]) != head) {
+		kept = append(kept, CutLine(head))
+	}
+	if from > 0 {
+		kept = append(kept, fmt.Sprintf("... (%d earlier lines)", from))
+	}
+	for _, l := range lines[from:] {
+		kept = append(kept, CutLine(l))
+	}
+	return strings.Join(kept, "\n")
+}
+
+// CutLine cuts a line to LineBytes, on a character boundary.
+func CutLine(l string) string {
+	if len(l) <= LineBytes {
+		return l
+	}
+	return strings.ToValidUTF8(l[:LineBytes], "") + "..."
+}
+
+// ConsoleFailure is the failure of a command that is no test runner (go vet, gofmt, tsc, a build script): its cause is the
+// first line that names an error (tsc's "error TS", go vet's "file.go:12:3: ..."), else the first line that is not a
+// heading ("# <package>", npm's "> script"), and its output the command's lines without passing ones.
+func ConsoleFailure(pkg, test, out string) Failure {
+	var lines []string
+	for _, l := range strings.Split(strings.ReplaceAll(stripANSI(out), "\r\n", "\n"), "\n") {
+		if t := strings.TrimSpace(l); t != "" && !PassingLine(t) {
+			lines = append(lines, strings.TrimRight(l, " \t"))
+		}
+	}
+	cause := ""
+	for _, l := range lines {
+		if t := strings.TrimSpace(l); strings.Contains(t, "error") || strings.Contains(t, "Error") || goPosition.MatchString(t) {
+			cause = t
+			break
+		}
+	}
+	for _, l := range lines {
+		if t := strings.TrimSpace(l); cause == "" && !strings.HasPrefix(t, "# ") && !strings.HasPrefix(t, "> ") && !strings.HasPrefix(t, "npm ") {
+			cause = t
+		}
+	}
+	if cause == "" {
+		cause = test + " failed and wrote nothing that says why"
+	}
+	cause = CutLine(cause)
+	return Failure{Package: pkg, Test: test, Cause: cause, Output: Clip(lines, cause)}
+}

go/buildstep/gotest.go

@@ -0,0 +1,409 @@
+package buildstep
+
+// The reader of `go test -json` (moved whole from mesh-catalog's mesh-build-go, issue 1901's thorough fix): per package
+// what ran and for how long, and each failure under the contract (failure.go), its real cause too when the failure is no
+// test's assertion (a panic, a timeout, a build error, an exit, a kill, a race).
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"regexp"
+	"slices"
+	"strings"
+)
+
+// GoPackage is one package's part of a Go test level.
+type GoPackage struct {
+	Dir     string  `json:"dir"`
+	Package string  `json:"package"`
+	Passed  bool    `json:"passed"`
+	Elapsed float64 `json:"elapsed"`
+	Tests   int     `json:"tests"`
+	// Skipped is how many of the package's tests skipped.
+	Skipped int `json:"skipped,omitempty"`
+	// NoTests is a package with no test files (at this level: a file with the other level's build tag is none).
+	NoTests bool `json:"no_tests,omitempty"`
+}
+
+// TestTime is one test and the seconds it took.
+type TestTime struct {
+	Package string  `json:"package"`
+	Test    string  `json:"test"`
+	Elapsed float64 `json:"elapsed"`
+}
+
+// GoTest is what one go.mod directory's `go test -json` said.
+type GoTest struct {
+	Packages []GoPackage
+	Tests    int
+	Skipped  int
+	Times    []TestTime
+	Failed   []Failure
+	// Elapsed is the slowest package's running time in seconds.
+	Elapsed float64
+	// Noise is the lines that were no event: what go said when it could not run the tests at all.
+	Noise []string
+}
+
+// ReadGoTest reads the output of `go test -json` run in the go.mod directory dir.
+func ReadGoTest(out, dir string) GoTest {
+	r := &goReader{dir: dir, pkgs: map[string]*GoPackage{}, builds: map[string][]string{}, pkgOut: map[string][]string{},
+		testOut: map[string][]string{}, causes: map[string]string{}, failedIn: map[string]bool{},
+		running: map[string][]string{}, passed: map[string]bool{}, built: map[string]bool{}}
+	sc := bufio.NewScanner(strings.NewReader(out))
+	sc.Buffer(make([]byte, 1<<20), 1<<26)
+	for sc.Scan() {
+		var ev goEvent
+		if err := json.Unmarshal(sc.Bytes(), &ev); err != nil {
+			if l := strings.TrimSpace(sc.Text()); l != "" {
+				r.res.Noise = append(r.res.Noise, l)
+			}
+			continue
+		}
+		r.event(ev)
+	}
+	r.finish()
+	return r.res
+}
+
+// goEvent is one line of `go test -json` (test2json, and the build events go test adds).
+type goEvent struct {
+	Action      string
+	Package     string
+	Test        string
+	Output      string
+	OutputType  string // "error" for a t.Error or t.Fatal message, "error-continue" for its further lines
+	ImportPath  string
+	FailedBuild string
+	Elapsed     float64
+}
+
+type goReader struct {
+	res      GoTest
+	dir      string
+	pkgs     map[string]*GoPackage
+	order    []string
+	builds   map[string][]string // build output by import path
+	pkgOut   map[string][]string
+	testOut  map[string][]string // by package + "\x00" + test
+	causes   map[string]string   // the first error line of a test, by the same key
+	failedIn map[string]bool     // packages with a failed test
+	// running is the tests that started and have not ended, by package, in the order they started: when a package
+	// fails with no failed test, these were running when its test program stopped.
+	running map[string][]string
+	// passed says a package's test program printed "PASS" before it failed; built says it failed to build.
+	passed, built map[string]bool
+}
+
+func (r *goReader) pkg(name string) *GoPackage {
+	p := r.pkgs[name]
+	if p == nil {
+		p = &GoPackage{Dir: r.dir, Package: name}
+		r.pkgs[name] = p
+		r.order = append(r.order, name)
+	}
+	return p
+}
+
+func keepLine(lines []string, out string) []string {
+	if t := strings.TrimRight(out, "\r\n"); t != "" && !strings.HasPrefix(t, "=== ") {
+		lines = append(lines, t)
+	}
+	return lines
+}
+
+func (r *goReader) event(ev goEvent) {
+	switch {
+	case ev.Package == "" && ev.ImportPath != "":
+		if ev.Action == "build-output" {
+			r.builds[ev.ImportPath] = keepLine(r.builds[ev.ImportPath], ev.Output)
+		}
+	case ev.Package == "":
+	case ev.Test == "":
+		p := r.pkg(ev.Package)
+		switch ev.Action {
+		case "output":
+			// go test's own summary of a package is never a failure's words: a "PASS" before a "FAIL <pkg>" says only
+			// that the tests passed and the program failed after them.
+			switch l := strings.TrimRight(ev.Output, "\r\n"); {
+			case l == "PASS":
+				r.passed[ev.Package] = true
+			case goSummaryLine(l):
+			default:
+				r.pkgOut[ev.Package] = keepLine(r.pkgOut[ev.Package], ev.Output)
+			}
+		case "pass":
+			p.Passed, p.Elapsed = true, ev.Elapsed
+		case "fail":
+			p.Passed, p.Elapsed = false, ev.Elapsed
+			if ev.FailedBuild != "" {
+				r.built[ev.Package] = true
+				r.pkgOut[ev.Package] = append(r.builds[ev.FailedBuild], r.pkgOut[ev.Package]...)
+			}
+		case "skip":
+			p.Passed, p.NoTests = true, true
+		}
+	default:
+		key := ev.Package + "\x00" + ev.Test
+		switch ev.Action {
+		case "output":
+			r.testOut[key] = keepLine(r.testOut[key], ev.Output)
+			if ev.OutputType == "error" && r.causes[key] == "" {
+				r.causes[key] = goErrorWords(ev.Output)
+			}
+		case "run":
+			r.running[ev.Package] = append(r.running[ev.Package], ev.Test)
+		case "pass", "fail", "skip":
+			r.running[ev.Package] = slices.DeleteFunc(r.running[ev.Package], func(t string) bool { return t == ev.Test })
+			p := r.pkg(ev.Package)
+			p.Tests++
+			r.res.Tests++
+			if ev.Action == "skip" {
+				r.res.Skipped++
+				p.Skipped++
+			}
+			r.res.Times = append(r.res.Times, TestTime{Package: ev.Package, Test: ev.Test, Elapsed: ev.Elapsed})
+			if ev.Action == "fail" {
+				r.failedIn[ev.Package] = true
+				if r.subtestFailed(ev.Package, ev.Test) {
+					return // a parent failed only by its subtest is that subtest's failure, said once
+				}
+				if r.subtestTakesTheCause(ev.Package, ev.Test) {
+					return // a subtest's panic, which go files under its parent, is said on the subtest
+				}
+				r.res.Failed = append(r.res.Failed, r.testFailure(ev.Package, ev.Test))
+			}
+		}
+	}
+}
+
+// subtestFailed says a failure of test under pkg was already reported for one of its subtests (they end first), each with
+// a cause of its own, and the test reported no error and no runtime cause (a subtest's panic) of its own.
+func (r *goReader) subtestFailed(pkg, test string) bool {
+	key := pkg + "\x00" + test
+	if r.causes[key] != "" || goRuntimeCause(r.testOut[key]) != "" {
+		return false
+	}
+	for _, f := range r.res.Failed {
+		if f.Package == pkg && strings.HasPrefix(f.Test, test+"/") {
+			return true
+		}
+	}
+	return false
+}
+
+// noMessage is the cause of a test that failed and said nothing of why.
+const noMessage = "the test failed without an error message (t.Fail or t.FailNow)"
+
+// subtestTakesTheCause gives a parent's runtime cause (a subtest's panic: go test -json files its lines under the
+// parent) to the subtests of that parent that failed with no message of their own, and says it did. A parent with an
+// error line of its own, or whose failed subtests each said why, is reported as itself.
+func (r *goReader) subtestTakesTheCause(pkg, test string) bool {
+	key := pkg + "\x00" + test
+	if r.causes[key] != "" {
+		return false
+	}
+	cause := goRuntimeCause(r.testOut[key])
+	if cause == "" {
+		return false
+	}
+	took := false
+	for i, f := range r.res.Failed {
+		if f.Package == pkg && strings.HasPrefix(f.Test, test+"/") && f.Cause == noMessage {
+			r.res.Failed[i].Cause, r.res.Failed[i].Output = cause, Clip(r.testOut[key], cause)
+			took = true
+		}
+	}
+	return took
+}
+
+// testFailure is a test that failed: its cause is its first error line, the race it ran into, the runtime's line, or
+// words saying it failed without a message.
+func (r *goReader) testFailure(pkg, test string) Failure {
+	key := pkg + "\x00" + test
+	cause := r.causes[key]
+	if race := goRaceCause(r.testOut[key]); race != "" && (cause == "" || strings.HasPrefix(cause, "race detected")) {
+		cause = race // the race itself, not testing's "race detected during execution of test"
+	} else if cause == "" {
+		cause = goRuntimeCause(r.testOut[key])
+	}
+	if cause == "" {
+		cause = noMessage
+	}
+	return Failure{Package: pkg, Test: test, Output: Clip(r.testOut[key], cause), Cause: cause}
+}
+
+// goSummaryLine says a line is go test's summary of a package, in go's exact forms only: "PASS" or "FAIL" alone,
+// "ok  \t<pkg>\t<time>" and "FAIL\t<pkg>\t<time>" (a line of the package's own that starts "ok " is kept).
+func goSummaryLine(l string) bool {
+	return l == "PASS" || l == "FAIL" || strings.HasPrefix(l, "ok  \t") || strings.HasPrefix(l, "FAIL\t")
+}
+
+// goRuntimeCause is the cause in a failure's output that is not a test's assertion: a race the race detector reported;
+// else the first "panic:" line, a timeout's with the tests it names as running; else the first "fatal error:" or
+// "signal:" line; "" when there is none. It reads every line, so a long goroutine dump cannot hide it. **It matches only
+// lines at column 0**, where go prints the runtime's: a test's indented log line holding the same words is not the cause.
+func goRuntimeCause(lines []string) string {
+	if race := goRaceCause(lines); race != "" {
+		return race
+	}
+	for _, prefix := range []string{"panic: ", "fatal error: ", "signal: "} {
+		for i, l := range lines {
+			l = strings.TrimRight(l, "\r\n")
+			if !strings.HasPrefix(l, prefix) {
+				continue
+			}
+			if strings.HasPrefix(l, "panic: test timed out after") {
+				var names []string
+				for _, n := range lines[i+1:] {
+					if !strings.HasPrefix(n, "\t\t") {
+						if strings.TrimSpace(n) == "running tests:" {
+							continue
+						}
+						break
+					}
+					names = append(names, strings.TrimSpace(n))
+				}
+				if len(names) > 0 {
+					l += "; running tests: " + strings.Join(names, ", ")
+				}
+			}
+			return CutLine(l)
+		}
+	}
+	return ""
+}
+
+// goRaceCause is the first race the race detector reported in a failure's output, in one line: its access and the frame
+// that made it, and where the goroutine that made it was created. "" when the output holds no race.
+func goRaceCause(lines []string) string {
+	at := -1
+	for i, l := range lines {
+		if strings.TrimRight(l, "\r\n") == "WARNING: DATA RACE" {
+			at = i
+			break
+		}
+	}
+	if at < 0 {
+		return ""
+	}
+	frame := func(i int) string {
+		var fn, file string
+		for _, l := range lines[i+1:] {
+			if l = strings.TrimSpace(l); l == "" {
+				break
+			}
+			if fn == "" {
+				fn = l
+				continue
+			}
+			file = l
+			if j := strings.LastIndexByte(file, '/'); j >= 0 {
+				file = file[j+1:]
+			}
+			if j := strings.Index(file, " +0x"); j >= 0 {
+				file = file[:j]
+			}
+			break
+		}
+		if file != "" {
+			return fn + " (" + file + ")"
+		}
+		return fn
+	}
+	words := "WARNING: DATA RACE"
+	for i := at + 1; i < len(lines); i++ {
+		l := strings.TrimSpace(lines[i])
+		if l == "" || strings.HasPrefix(l, "===") {
+			continue
+		}
+		words += ": " + strings.TrimSuffix(l, ":")
+		if f := frame(i); f != "" {
+			words += " in " + f
+		}
+		break
+	}
+	for i := at + 1; i < len(lines); i++ {
+		l := strings.TrimSpace(lines[i])
+		if strings.HasPrefix(l, "==================") {
+			break
+		}
+		if strings.HasPrefix(l, "Goroutine ") && strings.HasSuffix(l, " created at:") {
+			if f := frame(i); f != "" {
+				words += "; its goroutine created at " + f
+			}
+			break
+		}
+	}
+	return CutLine(words)
+}
+
+// goBuildCause is the first error line of a failed build: the first line that is not go's "# <package>" heading.
+func goBuildCause(lines []string) string {
+	for _, l := range lines {
+		if l = strings.TrimSpace(l); l != "" && !strings.HasPrefix(l, "# ") {
+			return CutLine(l)
+		}
+	}
+	return ""
+}
+
+// goTestNames names the tests that were running, at most three, and how many more.
+func goTestNames(tests []string) string {
+	if len(tests) <= 3 {
+		return strings.Join(tests, ", ")
+	}
+	return fmt.Sprintf("%s and %d more", strings.Join(tests[:3], ", "), len(tests)-3)
+}
+
+// packageFailure is a package that failed with no failed test to name it: its test program did not build, panicked,
+// timed out, was killed or exited. It names the tests that were running, keeps their output with the package's, and
+// says the cause.
+func (r *goReader) packageFailure(name string) Failure {
+	running := r.running[name]
+	var lines []string
+	for _, t := range running {
+		lines = append(lines, r.testOut[name+"\x00"+t]...)
+	}
+	lines = append(lines, r.pkgOut[name]...)
+	cause := goRuntimeCause(lines)
+	switch {
+	case cause != "":
+	case r.built[name]:
+		cause = goBuildCause(lines)
+	case len(running) > 0:
+		cause = "the test program exited while " + goTestNames(running) + " ran, with no panic: an os.Exit or a signal (go test -json reports no exit status)"
+	case r.passed[name]:
+		cause = "the tests passed, then the test program exited with a failure: an os.Exit or a panic in TestMain or after the tests (go test -json reports no exit status)"
+	}
+	if cause == "" {
+		cause = "the package failed with no test to name and no panic, signal or build error in its output"
+	}
+	return Failure{Package: name, Test: goTestNames(running), Output: Clip(lines, cause), Cause: cause}
+}
+
+var goFileAndLine = regexp.MustCompile(`^\S+\.go:\d+: `)
+
+// goPosition matches a line that starts with a Go file's position, as go vet and the compiler write an error.
+var goPosition = regexp.MustCompile(`^\S+\.go:\d+(:\d+)?: `)
+
+// goErrorWords is the words of an error line of a test: trimmed, without the file and line go test put before them.
+func goErrorWords(out string) string {
+	return strings.TrimSpace(goFileAndLine.ReplaceAllString(strings.TrimSpace(out), ""))
+}
+
+// finish moves what was read into the result: the packages in order, a failure for each failed package that has no
+// failed test to name it.
+func (r *goReader) finish() {
+	for _, name := range r.order {
+		p := r.pkgs[name]
+		if !p.Passed && !r.failedIn[name] {
+			r.res.Failed = append(r.res.Failed, r.packageFailure(name))
+		}
+		if !p.NoTests && p.Elapsed > r.res.Elapsed {
+			r.res.Elapsed = p.Elapsed
+		}
+		r.res.Packages = append(r.res.Packages, *p)
+	}
+}

go/buildstep/launchers.go

@@ -1,24 +1,14 @@
 package buildstep
 
-import "strings"
+import "git.novox.be/novox/mesh-sdk/go/catalogue"
 
 // LauncherSuffix is what a TypeScript entrypoint's launcher is called beside it: index.js is started as
 // index.serve.mjs (novox/hq ADR 0193), an ES module by its own extension whatever the bundle's package.json says.
-const LauncherSuffix = ".serve.mjs"
+const LauncherSuffix = catalogue.LauncherSuffix
 
-// Launchers are the launchers a bundle's build writes, by entrypoint, relative to the bundle's root: for TypeScript
-// every entrypoint `x.js` is started by `x.serve.mjs` beside it; an entrypoint that is not JavaScript and every other
-// language, whose build is already executable, get none. The one rule mesh-build-node, build-agent and the controller
-// share (R4e), so the name a build writes is the name a reader expects.
+// Launchers are the launchers a bundle's build writes, by entrypoint, relative to the bundle's root
+// (catalogue.Launchers): the one rule mesh-build-node, build-agent, the controller and a node taking in a build share
+// (R4e, issue 1126), so the name a build writes is the name a reader expects.
 func Launchers(language string, entrypoints []string) map[string]string {
-	out := map[string]string{}
-	if language != "typescript" {
-		return out
-	}
-	for _, entry := range entrypoints {
-		if strings.HasSuffix(entry, ".js") {
-			out[entry] = strings.TrimSuffix(entry, ".js") + LauncherSuffix
-		}
-	}
-	return out
+	return catalogue.Launchers(language, entrypoints)
 }

go/buildstep/phase.go

@@ -9,7 +9,7 @@ import (
 	"git.novox.be/novox/mesh-sdk/go/delivery"
 )
 
-// **A running ask says its phases** (issue 1890, 2026-10-26 19:09: a mesh-catalog try's step on shanks ran 30 minutes
+// **A running ask says its phases** (issue 1890, 2026-10-26 19:09: a mesh-catalog try's step on the workstation ran 30 minutes
 // and its module's journal held no line naming its ask, so nobody could tell whether it fetched, linted or tested). The
 // puller hands every ask's run a phase reporter in its context; RunAsk and a module's own step bodies call Phase as they
 // move (fetch and merge, a level's digest, lint, a level's tests), and each phase is logged with the ask's id and its

go/buildstep/pull.go

@@ -86,11 +86,24 @@ type Puller struct {
 	// mesh-config resolves for `build-hours` takes its place once handed. Outside the window the capacity judged by is 0:
 	// steps running finish, no new one is taken; the puller wakes at the window's next edge. Nil builds at any hour.
 	BuildHours func() (*BuildWindow, string)
+	// Eligible says why this node cannot run the seat's asks at all now, and "" when it can: what the module proves of
+	// its machine and finds missing (mesh-build-image: /dev/net/tun cannot be opened, so buildah's network for a RUN line
+	// cannot be made; 2026-10-28 on ace). Read at every judgement, so it is cheap (a module answers its last look).
+	// While it says a reason the capacity judged by is 0, said with the reason: steps running finish, no new one is
+	// taken, and the asks go to a node that can run them instead of failing here. The module calls Wake when its answer
+	// changes. Nil is always eligible.
+	Eligible func() string
 	// Has says whether this node has a need an ask names (delivery.AskNeeds, issue 890). An ask needing what it lacks is
 	// declined: its step ends refused as declined (delivery.StepDeclined), the message is dropped for its asker to put
 	// again, and the worker it came from is not looked at again until the next pull's wait, so a node lacking the need
 	// does not take the asker's next copy at once. Nil has nothing.
 	Has func(need string) bool
+	// SettingsFile is the module's settings file. With it set the puller wakes whenever the file is written (a file event,
+	// WatchSettings), and reads Capacity from it itself, keeping why it cannot be read (CapacityNote); a parked puller at
+	// capacity 0 therefore wakes when the node-engine refills the file, and a failed config follow is tried again then.
+	SettingsFile string
+	// watching, when set, is called each time the settings file's watch is (re)armed: a test waits on it, not on a sleep.
+	watching func()
 
 	mu      sync.Mutex
 	inHand  int
@@ -101,6 +114,14 @@ type Puller struct {
 	// watched is the capacity the config watch handed last, used in place of Capacity once hasWatched.
 	watched    int
 	hasWatched bool
+	// capFollow and hoursFollow are the state of the two config follows: followed once WatchConfig took them, trying
+	// while a start is in flight; followFault is the last failure said, so each failure is said once.
+	capFollowed, capTrying, hoursFollowed, hoursTrying bool
+	followFault                                        string
+	// fileFault is why the settings file's capacity cannot be read, "" when it can.
+	fileFault string
+	// capWhy is why the config watch's last value could not be read, "" when it could.
+	capWhy string
 	// hours is the build window the config watch handed last, and hoursFault why its value cannot be read; used in place
 	// of BuildHours once hasHours.
 	hours      *BuildWindow
@@ -241,6 +262,21 @@ func (p *Puller) roomNow() (ok bool, capacity, inHand int) {
 	return !p.paused && p.inHand < capacity, capacity, p.inHand
 }
 
+// CapacityNote says when the puller takes nothing for want of a capacity: why, and whether it is a fault (a setting that
+// cannot be read or is refused, so a person must look) and not a choice (a capacity set to 0). "" when it pulls.
+func (p *Puller) CapacityNote() (why string, fault bool) {
+	c := p.CapacityDetail()
+	if c.Effective > 0 {
+		return "", false
+	}
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	if p.fileFault != "" && !p.hasWatched {
+		return "the " + p.Language + " build capacity of " + p.Node + " is 0 because it cannot be read: " + p.fileFault, true
+	}
+	return "the " + p.Language + " build capacity of " + p.Node + " is " + c.Why, p.hasWatched && p.capWhy != ""
+}
+
 // CapacityNow is the capacity the puller judges by (CapacityDetail's Effective).
 func (p *Puller) CapacityNow() int {
 	return p.CapacityDetail().Effective
@@ -258,6 +294,15 @@ func (p *Puller) CapacityDetail() delivery.Capacity {
 	switch {
 	case has:
 		configured, from = watched, "mesh-config, as the config watch handed it"
+	case p.SettingsFile != "":
+		n, err := ReadCapacity(p.SettingsFile)
+		configured = n
+		p.mu.Lock()
+		p.fileFault = ""
+		if err != nil {
+			p.fileFault = err.Error()
+		}
+		p.mu.Unlock()
 	case p.Capacity != nil:
 		configured = p.Capacity()
 	}
@@ -291,6 +336,13 @@ func (p *Puller) CapacityDetail() delivery.Capacity {
 			c.Why = fmt.Sprintf("%s; within its build hours %s until %s", c.Why, c.BuildHours, w.NextEdge(at).Format("15:04"))
 		}
 	}
+	if p.Eligible != nil {
+		if why := p.Eligible(); why != "" {
+			c.Ineligible = why
+			c.Why = fmt.Sprintf("0, not eligible: %s (otherwise %s)", why, c.Why)
+			c.Effective = 0
+		}
+	}
 	p.sayCapacity(c)
 	return c
 }
@@ -326,7 +378,8 @@ func (p *Puller) sayCapacity(c delivery.Capacity) {
 	p.mu.Lock()
 	same := p.hasJudged && p.judged.Effective == c.Effective && p.judged.Configured == c.Configured && p.judged.ByCPU == c.ByCPU &&
 		p.judged.CoresPerStep == c.CoresPerStep && p.judged.QuotaCores == c.QuotaCores && p.judged.OutsideHours == c.OutsideHours &&
-		p.judged.BuildHours == c.BuildHours && p.judged.BuildHoursFault == c.BuildHoursFault
+		p.judged.BuildHours == c.BuildHours && p.judged.BuildHoursFault == c.BuildHoursFault &&
+		p.judged.Ineligible == c.Ineligible
 	if !same {
 		p.judged, p.hasJudged, p.capWritten = c, true, false
 	}
@@ -371,8 +424,8 @@ func (p *Puller) Pull(ctx context.Context) error {
 		// node kept from building is held by its capacity (0), not by a pause.
 		p.logf("the pause of %s cannot be read: %v; pulling as not paused", p.Node, err)
 	}
-	go p.watchCapacity() // WatchConfigServed waits for Serve, which a module starts after its pull
-	go p.watchHours()
+	p.follow() // WatchConfigServed waits for Serve, which a module starts after its pull
+	go p.watchSettings(ctx)
 	wait := p.PullWait
 	if wait <= 0 {
 		wait = DefaultPullWait
@@ -399,6 +452,7 @@ func (p *Puller) Pull(ctx context.Context) error {
 			case <-edge:
 			}
 			stop()
+			p.follow() // a follow that failed is tried again at the next event
 			_, capacity, inHand = p.roomNow()
 			p.logf("the %s puller on %s wakes: %d of capacity %d in hand, paused %v", p.Language, p.Node, inHand, capacity, p.Paused())
 			continue
@@ -417,6 +471,7 @@ func (p *Puller) Pull(ctx context.Context) error {
 			case <-ctx.Done():
 				return ctx.Err()
 			case <-p.wake:
+				p.follow()
 			case <-time.After(wait):
 			}
 			continue
@@ -483,6 +538,28 @@ func (p *Puller) decline(msg *Pulled, ask delivery.StepAsk, lacks []string) {
 	p.mu.Unlock()
 }
 
+// declineRun ends the step of an ask that began and then found this node should not run it (Declining), as decline does
+// before it begins: refused as declined, the message dropped for its asker to put again, and the worker it came from left
+// alone until the next pull's wait.
+func (p *Puller) declineRun(msg *Pulled, ask delivery.StepAsk, key string, step delivery.Step, d *Declining) {
+	result, _ := json.Marshal(delivery.StepDeclined{Declined: true, Needs: ask.Needs, Lacks: d.Lacks})
+	step.Ended = now().UTC()
+	step.State, step.Reason, step.Result = delivery.StepRefused, d.Text, result
+	if err := writeEnd(p.Put, key, step); err != nil {
+		p.logf("the ask %s cannot be declined on %s, so it is given back: %v", ask.ID, p.Node, err)
+		_ = msg.Nak()
+		return
+	}
+	p.logf("the ask %s is declined on %s: %s", ask.ID, p.Node, d.Text)
+	_ = msg.Term()
+	p.mu.Lock()
+	if p.declined == nil {
+		p.declined = map[string]bool{}
+	}
+	p.declined[msg.Kind] = true
+	p.mu.Unlock()
+}
+
 func withKind(msg *Pulled, kind string) *Pulled {
 	if msg != nil {
 		msg.Kind = kind
@@ -570,6 +647,11 @@ func (p *Puller) run(ctx context.Context, msg *Pulled, ask delivery.StepAsk, key
 	})
 	step = ph.end() // its end keeps the phase it ended in
 	close(done)
+	var dec *Declining
+	if errors.As(err, &dec) && ctx.Err() == nil {
+		p.declineRun(msg, ask, key, step, dec)
+		return
+	}
 	if ctx.Err() != nil {
 		// The process stops: the ask is neither ended nor acknowledged here, so the stream gives it to a node that runs.
 		return
@@ -595,7 +677,7 @@ func (p *Puller) run(ctx context.Context, msg *Pulled, ask delivery.StepAsk, key
 	}
 }
 
-// watchCapacity follows the module's config value `capacity` when WatchConfig is set (issue 1887, 2026-10-25: g14's
+// watchCapacity follows the module's config value `capacity` when WatchConfig is set (issue 1887, 2026-10-25: the laptop's
 // puller started at capacity 0 sat parked with capacity 2 set, because nothing woke it to read its settings file
 // again). The value comes as mesh-config resolved it for this node, the event of the change itself: the runtime hands
 // the value now and then each change its machine's provisioner client says moved, so nothing polls, and the puller does
@@ -605,11 +687,18 @@ func (p *Puller) watchCapacity() {
 	if p.WatchConfig == nil {
 		return
 	}
+	p.mu.Lock()
+	if p.capFollowed || p.capTrying {
+		p.mu.Unlock()
+		return
+	}
+	p.capTrying = true
+	p.mu.Unlock()
 	err := p.WatchConfig(CapacitySetting, func(c stdio.ProvisionChange) error {
 		n, why := p.capacityFrom(c)
 		p.mu.Lock()
 		before, had := p.watched, p.hasWatched
-		p.watched, p.hasWatched = n, true
+		p.watched, p.hasWatched, p.capWhy = n, true, why
 		p.mu.Unlock()
 		switch {
 		case why != "":
@@ -620,9 +709,31 @@ func (p *Puller) watchCapacity() {
 		p.Wake()
 		return nil
 	})
+	p.followed(&p.capFollowed, &p.capTrying, err, "build capacity")
+}
+
+// follow starts each config follow that is not running: at the start, and at every wake after (a file event, a resume, a
+// step's end), so a follow that failed is tried again by the next event and not given up for good.
+func (p *Puller) follow() {
+	go p.watchCapacity()
+	go p.watchHours()
+}
+
+// followed records the end of one follow's start. A failure is said once per distinct error, with that it is tried again.
+func (p *Puller) followed(done, trying *bool, err error, what string) {
+	p.mu.Lock()
+	*trying = false
+	*done = err == nil
+	said := err != nil && err.Error() == p.followFault
 	if err != nil {
-		p.logf("the %s build capacity of %s cannot be followed on the bus, so it is read from the settings file when the "+
-			"puller wakes: %v", p.Language, p.Node, err)
+		p.followFault = err.Error()
+	} else {
+		p.followFault = ""
+	}
+	p.mu.Unlock()
+	if err != nil && !said {
+		p.logf("the %s %s of %s cannot be followed on the bus, so it is read from the settings file; the follow is tried "+
+			"again at the next event: %v", p.Language, what, p.Node, err)
 	}
 }
 
@@ -633,6 +744,13 @@ func (p *Puller) watchHours() {
 	if p.WatchConfig == nil || p.BuildHours == nil {
 		return
 	}
+	p.mu.Lock()
+	if p.hoursFollowed || p.hoursTrying {
+		p.mu.Unlock()
+		return
+	}
+	p.hoursTrying = true
+	p.mu.Unlock()
 	err := p.WatchConfig(BuildHoursSetting, func(c stdio.ProvisionChange) error {
 		setting := ""
 		var w *BuildWindow
@@ -644,7 +762,7 @@ func (p *Puller) watchHours() {
 			why = fmt.Sprintf("the setting %s %s is not a string", BuildHoursSetting, c.Value)
 		default:
 			var err error
-			if w, err = ParseBuildHours(setting, p.Node); err != nil {
+			if w, err = ParseBuildWindow(setting); err != nil {
 				why = err.Error()
 			}
 		}
@@ -657,9 +775,7 @@ func (p *Puller) watchHours() {
 		p.Wake()
 		return nil
 	})
-	if err != nil {
-		p.logf("the %s build hours of %s cannot be followed on the bus, so they are read from the settings file: %v", p.Language, p.Node, err)
-	}
+	p.followed(&p.hoursFollowed, &p.hoursTrying, err, "build hours")
 }
 
 // WatchConfigServed is stdio.WatchConfig once Serve has the runtime's channel (stdio.Served): a build module starts its
@@ -674,13 +790,7 @@ func (p *Puller) capacityFrom(c stdio.ProvisionChange) (int, string) {
 	if c.Refused != "" {
 		return 0, "its capacity is no longer answered: " + c.Refused
 	}
-	setting := ""
-	if len(c.Value) > 0 && string(c.Value) != "null" {
-		if err := json.Unmarshal(c.Value, &setting); err != nil {
-			return 0, fmt.Sprintf("its capacity %s is not a string", c.Value)
-		}
-	}
-	n, err := capacityOf(setting, p.Node)
+	n, err := capacityOf(c.Value)
 	if err != nil {
 		return 0, err.Error()
 	}

go/buildstep/pull_capacity_test.go

@@ -22,7 +22,7 @@ func (w *configWatch) watch(key string, handle func(stdio.ProvisionChange) error
 	w.asked, w.handle = key, handle
 	value := w.value
 	w.mu.Unlock()
-	return handle(stdio.ProvisionChange{Kind: "config", Key: key, Value: json.RawMessage(`"` + value + `"`)})
+	return handle(stdio.ProvisionChange{Kind: "config", Key: key, Value: json.RawMessage(value)})
 }
 
 func (w *configWatch) set(t *testing.T, value string) {
@@ -33,7 +33,7 @@ func (w *configWatch) set(t *testing.T, value string) {
 	if handle == nil {
 		t.Fatal("the puller watches no config value")
 	}
-	if err := handle(stdio.ProvisionChange{Kind: "config", Key: key, Value: json.RawMessage(`"` + value + `"`)}); err != nil {
+	if err := handle(stdio.ProvisionChange{Kind: "config", Key: key, Value: json.RawMessage(value)}); err != nil {
 		t.Fatal(err)
 	}
 }

go/buildstep/pull_test.go

@@ -5,6 +5,8 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"os"
+	"path/filepath"
 	"strings"
 	"sync"
 	"sync/atomic"
@@ -166,7 +168,7 @@ func TestPullHoldsAtMostItsCapacity(t *testing.T) {
 	waitFor(t, "a phase on the step key", func() bool {
 		key, _ := delivery.AskStepKey("shanks", p.Running()[0].ID)
 		s, _ := st.get(key)
-		return s.State == delivery.StepRunning && s.Phase == "unit: tests of 3 packages" && !s.PhaseAt.IsZero()
+		return s.State == delivery.StepRunning && s.Phase == "unit: tests of 3 packages" && !s.PhaseAt.IsZero() && s.Owner == Owner // 1890/AC5
 	})
 	release <- struct{}{}
 	waitFor(t, "the third taken", func() bool { return src.Waiting(delivery.AskDelivery) == 0 })
@@ -176,7 +178,7 @@ func TestPullHoldsAtMostItsCapacity(t *testing.T) {
 	waitFor(t, "all acked", func() bool { a, _, _ := src.Fates(); return len(a) == 3 })
 	for _, a := range asks {
 		key, _ := delivery.AskStepKey("shanks", a.ID)
-		if s, _ := st.get(key); s.State != delivery.StepPassed || s.Phase != "unit: tests of 3 packages" {
+		if s, _ := st.get(key); s.State != delivery.StepPassed || s.Phase != "unit: tests of 3 packages" || s.Owner != Owner {
 			t.Errorf("the end of %s = %+v, want passed in its last phase", a.ID, s)
 		}
 	}
@@ -228,6 +230,21 @@ func TestPullDropsWhatIsNoAsk(t *testing.T) {
 		Run: func(ctx context.Context, a delivery.StepAsk) (any, error) { return nil, nil }}
 	go q.Pull(ctx)
 	waitFor(t, "the placed ask acked where its need is met", func() bool { a, _, _ := has.Fates(); return len(a) == 1 })
+	// A run that finds its node is not on the agreed toolchain declines the ask after it began (ADR 0584 clause 2); a node on it builds.
+	sit, sitSteps := NewFakeAsks(), newSteps()
+	toolchain := testAsk(delivery.AskDelivery)
+	_ = sit.PublishAsk(toolchain)
+	s2 := &Puller{Source: sit, Language: delivery.AskGo, Node: "ace", Put: sitSteps.put, Capacity: func() int { return 1 }, PullWait: 10 * time.Millisecond,
+		Run: func(ctx context.Context, a delivery.StepAsk) (any, error) {
+			return nil, &Declining{Text: "the ask is for 26.13.0 and this node builds with 26.12.1", Lacks: []string{"the agreed toolchain 26.13.0 (recipe 3)"}}
+		}}
+	go s2.Pull(ctx)
+	waitFor(t, "the ask termed on the node that sits out", func() bool { _, tm, _ := sit.Fates(); return len(tm) == 1 })
+	sk, _ := delivery.AskStepKey("ace", toolchain.ID)
+	ss, _ := sitSteps.get(sk)
+	if d, ok := delivery.DeclinedOf(ss); !ok || len(d.Lacks) != 1 || !strings.Contains(ss.Reason, "26.12.1") {
+		t.Fatalf("the sitting-out step = %+v", ss)
+	}
 }
 
 // load reads the recorded steps state's raw values: the pause key is not a step, so it is kept apart.
@@ -282,7 +299,7 @@ func TestPullAtCapacityZeroTakesNothing(t *testing.T) {
 	t.Run("config watch wakes", func(t *testing.T) {
 		src, st := NewFakeAsks(), newSteps()
 		_ = src.PublishAsk(testAsk(delivery.AskDelivery))
-		w := &configWatch{value: "shanks=3,g14=0"}
+		w := &configWatch{value: "0"}
 		p := &Puller{Source: src, Language: delivery.AskGo, Node: "g14", Put: st.put, PullWait: 10 * time.Millisecond,
 			Capacity:    func() int { return 0 }, // the settings file, not refilled yet
 			WatchConfig: w.watch,
@@ -298,9 +315,74 @@ func TestPullAtCapacityZeroTakesNothing(t *testing.T) {
 		if w.asked != CapacitySetting {
 			t.Fatalf("the puller watches %q, want %q", w.asked, CapacitySetting)
 		}
-		w.set(t, "shanks=3,g14=2")
+		w.set(t, "2")
 		waitFor(t, "the ask taken once the capacity moved to 2", func() bool { a, _, _ := src.Fates(); return len(a) == 1 })
 	})
+	t.Run("settings refill wakes a parked puller and retries a failed follow", func(t *testing.T) {
+		// 2026-10-28: a replaced builder held the old "shanks=2,..." in its settings file, its config follow timed out, and
+		// the puller parked at 0 with nothing to wake it when the node-engine refilled the file.
+		src, st := NewFakeAsks(), newSteps()
+		_ = src.PublishAsk(testAsk(delivery.AskDelivery))
+		file := filepath.Join(t.TempDir(), "settings.json")
+		if err := os.WriteFile(file, []byte(`{"capacity":"shanks=2,ace=2"}`), 0o600); err != nil {
+			t.Fatal(err)
+		}
+		var mu sync.Mutex
+		attempts := 0
+		watch := func(key string, handle func(stdio.ProvisionChange) error) error {
+			mu.Lock()
+			defer mu.Unlock()
+			attempts++
+			if attempts == 1 {
+				return errors.New("nats: timeout")
+			}
+			return nil // followed; no value handed yet
+		}
+		armed := make(chan struct{}, 8)
+		var parked atomic.Int32
+		parks := func() int32 { return parked.Load() }
+		logf := func(format string, args ...any) {
+			if strings.Contains(format, "parks") {
+				parked.Add(1)
+			}
+		}
+		p := &Puller{Source: src, Language: delivery.AskGo, Node: "shanks", Put: st.put, PullWait: 10 * time.Millisecond,
+			SettingsFile: file, WatchConfig: watch, Logf: logf, watching: func() { armed <- struct{}{} },
+			Run: func(ctx context.Context, a delivery.StepAsk) (any, error) { return nil, nil }}
+		ctx, cancel := context.WithCancel(context.Background())
+		defer cancel()
+		go p.Pull(ctx)
+		waitFor(t, "the parked puller to say why", func() bool { why, fault := p.CapacityNote(); return fault && why != "" })
+		if src.Waiting(delivery.AskDelivery) != 1 {
+			t.Fatal("a node whose capacity cannot be read took an ask")
+		}
+		<-armed // the file watch is in place
+		tmp := file + ".new"
+		if err := os.WriteFile(tmp, []byte(`{"capacity":2}`), 0o600); err != nil {
+			t.Fatal(err)
+		}
+		if err := os.Rename(tmp, file); err != nil {
+			t.Fatal(err)
+		}
+		waitFor(t, "the ask taken once the file was refilled", func() bool { a, _, _ := src.Fates(); return len(a) == 1 })
+		// and the directory itself replaced (IN_IGNORED): the watch is armed again and a later refill still wakes the puller
+		dir := filepath.Dir(file)
+		before := parks()
+		if err := os.RemoveAll(dir); err != nil {
+			t.Fatal(err)
+		}
+		if err := os.Mkdir(dir, 0o700); err != nil {
+			t.Fatal(err)
+		}
+		<-armed // armed again
+		waitFor(t, "the puller parked with no settings file", func() bool { return parks() > before })
+		_ = src.PublishAsk(testAsk(delivery.AskDelivery))
+		if err := os.WriteFile(file, []byte(`{"capacity":2}`), 0o600); err != nil {
+			t.Fatal(err)
+		}
+		waitFor(t, "the second ask taken after the directory was replaced", func() bool { a, _, _ := src.Fates(); return len(a) == 2 })
+		waitFor(t, "the failed follow tried again", func() bool { mu.Lock(); defer mu.Unlock(); return attempts >= 2 })
+	})
 	for _, c := range []struct {
 		name  string
 		watch func(string, func(stdio.ProvisionChange) error) error

go/buildstep/refusal.go

@@ -16,3 +16,14 @@ func (r *Refusal) Error() string { return r.Text }
 
 // Refuse is a Refusal with its text formatted.
 func Refuse(format string, args ...any) *Refusal { return &Refusal{Text: fmt.Sprintf(format, args...)} }
+
+// Declining is a step a node does not run because another node should: it ends refused as declined (delivery.StepDeclined),
+// the ask's message is dropped, and the asker puts the ask again under a new id (issue 890). A build ask naming a
+// toolchain other than this node's is one (novox/hq ADR 0584 clause 2): a node that is not in the toolchain majority
+// sits out and never fails a build.
+type Declining struct {
+	Text  string
+	Lacks []string // what this node lacks, in words the operator reads
+}
+
+func (d *Declining) Error() string { return d.Text }

go/buildstep/request.go

@@ -2,9 +2,12 @@ package buildstep
 
 import (
 	"fmt"
+	"maps"
 	"path"
 	"regexp"
 	"strings"
+
+	"git.novox.be/novox/mesh-sdk/go/delivery"
 )
 
 var (
@@ -27,6 +30,10 @@ type FetchRequest struct {
 	Base       string   `json:"base,omitempty"`
 	Dir        string   `json:"dir,omitempty"`
 	Paths      []string `json:"paths,omitempty"`
+	// Packages are the version of each mesh package the build or the check builds against (delivery.StepAsk.Packages,
+	// novox/hq ADR 0573 §2, §4): the build module writes each into the workspace's go.mod and go.sum, whatever version
+	// the repository names, checksum-verified, and names them in its log.
+	Packages delivery.PackageVersions `json:"packages,omitempty"`
 }
 
 // FetchRequestProperties are the JSON schema properties of FetchRequest's dir and paths, for a fetch tool's Input.
@@ -35,6 +42,8 @@ func FetchRequestProperties() map[string]any {
 		"dir": map[string]any{"type": "string", "description": "the module's directory in the repository (\".\" for its root), with paths"},
 		"paths": map[string]any{"type": "array", "items": map[string]any{"type": "string"},
 			"description": "the paths the module names, relative to dir, from the indexer's kept inputs: the build sees only these, the manifest and its lock files"},
+		"packages": map[string]any{"type": "object", "additionalProperties": map[string]any{"type": "string"},
+			"description": "optional: the version (a full commit) of each mesh package to build against, by its module path, whatever version go.mod names (novox/hq ADR 0573 §2); the builder and the checker fill it"},
 	}
 }
 
@@ -49,6 +58,12 @@ func (r FetchRequest) Args() map[string]any {
 	if len(r.Paths) > 0 {
 		args["paths"] = append([]string(nil), r.Paths...)
 	}
+	if len(r.Packages) > 0 {
+		args["packages"] = map[string]any{}
+		for p, v := range r.Packages {
+			args["packages"].(map[string]any)[p] = v
+		}
+	}
 	return args
 }
 
@@ -78,9 +93,42 @@ func ParseFetchRequest(args map[string]any) (FetchRequest, error) {
 	default:
 		return FetchRequest{}, fmt.Errorf("paths is a list of strings")
 	}
+	packages, err := PackagesArg(args["packages"])
+	if err != nil {
+		return FetchRequest{}, err
+	}
+	r.Packages = packages
 	return r, r.Check()
 }
 
+// PackagesArg reads a tool call's packages argument, an object of strings (as JSON gives it) or the map an ask gives;
+// nil for none.
+func PackagesArg(v any) (delivery.PackageVersions, error) {
+	out := delivery.PackageVersions{}
+	switch v := v.(type) {
+	case nil:
+		return nil, nil
+	case delivery.PackageVersions:
+		maps.Copy(out, v)
+	case map[string]string:
+		maps.Copy(out, v)
+	case map[string]any:
+		for p, version := range v {
+			s, ok := version.(string)
+			if !ok {
+				return nil, fmt.Errorf("packages is an object of versions (strings), by package")
+			}
+			out[p] = s
+		}
+	default:
+		return nil, fmt.Errorf("packages is an object of versions (strings), by package")
+	}
+	if len(out) == 0 {
+		return nil, nil
+	}
+	return out, out.Check()
+}
+
 // Check is what ParseFetchRequest refuses.
 func (r FetchRequest) Check() error {
 	if !requestRepositoryOK.MatchString(r.Repository) || strings.Contains(r.Repository, "..") {

go/buildstep/request_test.go

@@ -10,11 +10,15 @@ import (
 // from the indexer's kept inputs and the build module reads them from the call, never from the manifest (ADR 0495
 // clause 1). The request survives the trip through a tool call's arguments.
 func TestAFetchRequestCarriesTheNamedPathsThroughTheToolCall(t *testing.T) {
+	// And the versions of the mesh packages to build against (novox/hq ADR 0573 §2; issue 1585 S4).
 	req := FetchRequest{Repository: "novox/mesh-sdk", Commit: strings.Repeat("a", 40), Ref: "refs/pull/7/head",
-		Dir: ".", Paths: []string{"package.json", "src"}}
+		Dir: ".", Paths: []string{"package.json", "src"}, Packages: map[string]string{"git.novox.be/novox/mesh-sdk/go": strings.Repeat("d", 40)}}
 	args := req.Args()
-	// A tool call's arguments arrive as JSON: lists of any.
+	// A tool call's arguments arrive as JSON: lists of any, objects of any.
 	args["paths"] = []any{"package.json", "src"}
+	if p, ok := args["packages"].(map[string]any); !ok || p["git.novox.be/novox/mesh-sdk/go"] != strings.Repeat("d", 40) {
+		t.Fatalf("the packages are not in the call's arguments: %v", args["packages"])
+	}
 	got, err := ParseFetchRequest(args)
 	if err != nil {
 		t.Fatal(err)
@@ -42,6 +46,9 @@ func TestAFetchRequestCarriesTheNamedPathsThroughTheToolCall(t *testing.T) {
 		{map[string]any{"dir": "../a", "paths": []any{"src"}}, "leaves the repository"},
 		{map[string]any{"dir": "modules/a", "paths": []any{3}}, "paths is a list of strings"},
 		{map[string]any{"dir": "modules/a"}, "names a module directory and no path"},
+		{map[string]any{"packages": map[string]any{"git.novox.be/novox/mesh-sdk/go": "v0.1.7"}}, "no full commit"},
+		{map[string]any{"packages": map[string]any{"a b": strings.Repeat("d", 40)}}, "no module path"},
+		{map[string]any{"packages": []any{"x"}}, "packages is an object"},
 	} {
 		args := map[string]any{}
 		for k, v := range ok {

go/buildstep/stale.go

@@ -5,6 +5,8 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"os"
+	"strconv"
 	"strings"
 	"time"
 
@@ -14,40 +16,82 @@ import (
 
 // **A step left running** (novox/hq issue 1890, note 5). A build module that stops while a step runs leaves its key in
 // state running for good: nothing else writes that key's end, and the stream's redelivery only rewrites it when the same
-// ask comes back. At its start a module ends the steps its node left running before the process began (EndStale), and
-// its step-end tool ends one by hand (EndOne).
+// ask comes back. At its start a module ends the steps its node left running by another process (EndStale: every step
+// names its owner, delivery.Step.Owner; note 21), and its step-end tool ends one by hand (EndOne). The conformance kit's
+// left-running case holds every build module to the start sweep (conformance.LeftRunning).
 
 // RestartReason is why a step a previous process left running is ended.
 const RestartReason = "the build module restarted while it ran"
 
-// Boot is when this process began. A step started at or after it belongs to this process, which may still run it, so
-// EndOne refuses it.
+// Boot is when this process began. A step with no owner (written by an older build) started at or after it is taken
+// for this process's, which may still run it, so EndOne refuses it.
 var Boot = time.Now()
 
+// Owner is this process as a step's owner (delivery.Step.Owner): `<boot id>.<pid>.<start>`, the node's boot id
+// (/proc/sys/kernel/random/boot_id), the pid and Boot in milliseconds, base 36. The start keeps two processes apart
+// that a reboot or a pid namespace gave the same pid. A running step whose owner is another is a previous process's.
+var Owner = ownerOf(bootID, os.Getpid(), Boot)
+
+// bootID is the node's boot id as Owner holds it; noBootID when it could not be read, which EndStaleAtStart says once.
+var bootID = readBootID()
+
+const noBootID = "no-boot-id"
+
+func ownerOf(bootID string, pid int, start time.Time) string {
+	return bootID + "." + strconv.Itoa(pid) + "." + strconv.FormatInt(start.UnixMilli(), 36)
+}
+
+// readBootID is the node's boot id, or noBootID where it cannot be read (the pid and the start then tell the processes
+// apart).
+func readBootID() string {
+	b, err := os.ReadFile("/proc/sys/kernel/random/boot_id")
+	if id := strings.TrimSpace(string(b)); err == nil && id != "" {
+		return id
+	}
+	return noBootID
+}
+
 // Scan reads and writes a steps state with its revisions: its keys, a key's stored value and revision (nil and 0 for
-// none), and a write that lands only while the key is still at the revision read (KeptState.Update), failing with
-// stdio.ErrChanged when another writer was first.
+// none), a write that lands only while the key is still at the revision read (KeptState.Update), and a delete of a key
+// still at the revision read; both fail with stdio.ErrChanged when another writer was first.
 type Scan struct {
 	Keys   func() ([]string, error)
 	Get    func(key string) (json.RawMessage, uint64, error)
 	Update func(key string, value any, revision uint64) (uint64, error)
+	Delete func(key string, revision uint64) error
 }
 
 // ScanOf is the Scan of a state the process keeps.
+//
+// Its Delete reads the key again and deletes it only while it is still at the revision read: the runtime's
+// mesh/state.delete takes no revision yet, so a write landing between that read and the delete (a few milliseconds) is
+// deleted with it. For a step key that is a redelivered ask begun on this node in that moment: its running key leaves
+// the steps state until its run writes its end, which its asker still reads (a watch takes puts only).
 func ScanOf(s stdio.KeptState) Scan {
-	return Scan{Keys: s.Keys, Update: s.Update, Get: func(key string) (json.RawMessage, uint64, error) {
+	get := func(key string) (json.RawMessage, uint64, error) {
 		e, err := s.Get(key)
 		if err != nil || e == nil {
 			return nil, 0, err
 		}
 		return e.Value, e.Revision, nil
+	}
+	return Scan{Keys: s.Keys, Update: s.Update, Get: get, Delete: func(key string, revision uint64) error {
+		_, rev, err := get(key)
+		if err != nil {
+			return err
+		}
+		if rev != revision {
+			return stdio.ErrChanged
+		}
+		return s.Delete(key)
 	}}
 }
 
 // isAsk says a step is a pulled ask's: its key is <node>.<ask id> and its tool is "<kind> ask" (a hand-started step
 // has the tool's name). An ask's key is the stream's to settle, never a restart's: the puller leaves an ask it was
 // running unacknowledged so the stream redelivers it, and the asker's wait takes the first end it reads on the key.
-// Only once the asker's bound has passed (delivery.StepBound) is the key nobody's, and then it is ended.
+// A key a gone process owns is deleted, never ended (EndStale); one with no owner is ended only once the asker's bound
+// has passed (delivery.StepBound), when it is nobody's.
 func isAsk(key string, s delivery.Step) bool {
 	_, _, err := delivery.ParseAskStepKey(key)
 	return err == nil && strings.HasSuffix(s.Tool, " ask")
@@ -95,11 +139,23 @@ func endRunning(scan Scan, key string, step delivery.Step, revision uint64, why
 	return err
 }
 
-// EndStale ends this node's steps that are running and started before `before` (the start of this process) as failed
-// with RestartReason, and answers their ids. Only keys of node are read; a value that is no step is left alone. A step
-// of a pulled ask is left to the stream's redelivery (isAsk) until its start is older than delivery.StepBound: its asker
-// stopped waiting then, whether the stream gave it to another node or gave it up, and it is ended as failed, "past the
-// step bound: its asker stopped waiting at <time>". A key written by another writer since it was read
+// EndStale ends this node's running steps that no process of this module runs any more, and answers their ids. Only keys
+// of node are read; a value that is no step is left alone.
+//   - A hand-started step with an owner (delivery.Step.Owner) that is not this process (Owner) is ended failed with
+//     RestartReason at once, whatever its age: its process is gone and nothing redelivers it, so nothing else would
+//     write its end (issue 1890, note 21).
+//   - A pulled ask's step with an owner that is not this process is deleted, not ended (novox/hq ADR 0525 §6): the
+//     stream redelivers an ask whose node stopped (the puller neither ends nor acknowledges one at its stop), and its
+//     asker takes the first end it reads, so an end written here would fail a check the redelivery would still run. Its
+//     asker's watch takes puts only and keeps waiting for the redelivery's key, its bound the backstop; the stale running
+//     key leaves the steps state, and with it the delivery view's and the checker's count of what runs (note 21: it
+//     held one of a build node's two slots).
+//   - A step owned by this process is left: it may run now. A redelivered ask begun on this node is owned by it.
+//   - A step with no owner (written by an older build) keeps the earlier rule: a hand-started step started before
+//     `before` (the start of this process) is ended; a pulled ask is left to the stream's redelivery (isAsk) until its
+//     start is older than delivery.StepBound, and then ended "past the step bound: its asker stopped waiting at <time>".
+//
+// Each end and delete is logged, naming the step, its owner and why. A key written by another writer since it was read
 // (a redelivered ask's start, a real end) is skipped.
 func EndStale(scan Scan, node string, before time.Time, logf func(string, ...any)) ([]string, error) {
 	keys, err := scan.Keys()
@@ -123,32 +179,59 @@ func EndStale(scan Scan, node string, before time.Time, logf func(string, ...any
 		if err != nil || step.State != delivery.StepRunning {
 			continue
 		}
-		why := RestartReason
-		if isAsk(k, step) {
-			if !step.Started.Add(delivery.StepBound).Before(now()) {
-				continue
-			}
-			why = "past the step bound: its asker stopped waiting at " + step.Started.Add(delivery.StepBound).UTC().Format("2006-01-02T15:04:05Z")
-		} else if !step.Started.Before(before) {
+		why, said := staleWhy(k, step, before)
+		if why == "" {
 			continue
 		}
-		if err := endRunning(scan, k, step, rev, why); err != nil {
+		done := "ended"
+		if step.Owner != "" && isAsk(k, step) {
+			done = "deleted, left to the stream's redelivery"
+			if scan.Delete == nil {
+				err = fmt.Errorf("the steps state takes no delete")
+			} else {
+				err = scan.Delete(k, rev)
+			}
+		} else {
+			err = endRunning(scan, k, step, rev, why)
+		}
+		if err != nil {
 			if errors.Is(err, stdio.ErrChanged) {
 				continue
 			}
 			return ended, fmt.Errorf("buildstep: ending the step %s: %w", k, err)
 		}
 		if logf != nil {
-			logf("the step %s (%s) was left running and is ended: %s", k, step.Tool, why)
+			logf("the step %s (%s, started %s) was left running and is %s: %s; %s", k, step.Tool,
+				step.Started.UTC().Format(time.RFC3339), done, why, said)
 		}
 		ended = append(ended, step.ID)
 	}
 	return ended, nil
 }
 
+// staleWhy is why a running step is ended (or, for an ask with an owner, deleted) by EndStale and what the log says of
+// its owner, or "" to leave it.
+func staleWhy(key string, step delivery.Step, before time.Time) (why, said string) {
+	switch {
+	case step.Owner == Owner:
+		return "", ""
+	case step.Owner != "":
+		return RestartReason, "its owner " + step.Owner + " is not this process " + Owner
+	case isAsk(key, step):
+		if !step.Started.Add(delivery.StepBound).Before(now()) {
+			return "", ""
+		}
+		return "past the step bound: its asker stopped waiting at " + step.Started.Add(delivery.StepBound).UTC().Format("2006-01-02T15:04:05Z"),
+			"it names no owner (an older build wrote it)"
+	case step.Started.Before(before):
+		return RestartReason, "it names no owner (an older build wrote it) and started before this process"
+	}
+	return "", ""
+}
+
 // EndOne ends this node's running step id (or the key <node>.<id>) as failed with why. A step that is not running is
-// refused, and so is one started since this process began (Boot: it may still run, whether a pulled ask or a step a
-// tool started), one live reports as held, and one whose key changed since it was read.
+// refused, and so is one this process owns (Owner; for a step with no owner, one started since Boot: it may still run,
+// whether a pulled ask or a step a tool started), one live reports as held, and one whose key changed since it was read.
 func EndOne(scan Scan, node, id, why string, live func(id string) bool) (delivery.Step, error) {
 	id = strings.TrimSpace(id)
 	if n, rest, ok := strings.Cut(id, "."); ok {
@@ -178,7 +261,7 @@ func EndOne(scan Scan, node, id, why string, live func(id string) bool) (deliver
 	if step.State != delivery.StepRunning {
 		return delivery.Step{}, fmt.Errorf("the step %s is %s, not running", key, step.State)
 	}
-	if !step.Started.Before(Boot) || (live != nil && live(id)) {
+	if step.Owner == Owner || (step.Owner == "" && !step.Started.Before(Boot)) || (live != nil && live(id)) {
 		return delivery.Step{}, fmt.Errorf("the step %s was started by this process and may run now; only a step a previous process left is ended", key)
 	}
 	if err := endRunning(scan, key, step, rev, why); err != nil {
@@ -226,14 +309,24 @@ var (
 	StaleRetry    = 5 * time.Second
 )
 
+// StaleServed is what EndStaleAtStart waits for before it reads the steps state: the runtime serving (stdio.Served).
+// The conformance kit's left-running case (conformance.LeftRunning) hands it a closed channel, to run a module's own
+// start sweep in its test.
+var StaleServed = stdio.Served
+
 // EndStaleAtStart is what a build module runs once at its start, in a goroutine: it waits for the runtime to serve,
-// then ends this node's steps left running before `before` (EndStale), trying again when the state cannot be read yet.
-// A step this process starts is never one of them: it starts after `before`.
+// then ends this node's steps a previous process left running (EndStale), trying again when the state cannot be read
+// yet. A step names its owner, so `before` (the start of this process) matters only for a step with no owner, written
+// by an older build: such a step started before it is a previous process's. When the node's boot id cannot be read it
+// says so once: Owner then tells processes apart by their pid and start only.
 func EndStaleAtStart(ctx context.Context, scan Scan, node string, before time.Time, logf func(string, ...any)) {
 	select {
 	case <-ctx.Done():
 		return
-	case <-stdio.Served():
+	case <-StaleServed():
+	}
+	if bootID == noBootID && logf != nil {
+		logf("the boot id of %s cannot be read (/proc/sys/kernel/random/boot_id): its steps' owner is %s, told apart by pid and start only", node, Owner)
 	}
 	for attempt := 1; ; attempt++ {
 		ended, err := EndStale(scan, node, before, logf)

go/buildstep/stale_test.go

@@ -2,6 +2,7 @@ package buildstep
 
 import (
 	"encoding/json"
+	"fmt"
 	stdio "git.novox.be/novox/mesh-sdk/go"
 	"strings"
 	"testing"
@@ -33,6 +34,15 @@ func scanOf(k *keys, race func(key string)) Scan {
 			raw, err := delivery.EncodeStep(s[len(s)-1])
 			return raw, uint64(len(s)), err
 		},
+		Delete: func(key string, revision uint64) error {
+			k.mu.Lock()
+			defer k.mu.Unlock()
+			if uint64(len(k.puts[key])) != revision {
+				return stdio.ErrChanged
+			}
+			delete(k.puts, key)
+			return nil
+		},
 		Update: func(key string, value any, revision uint64) (uint64, error) {
 			if race != nil {
 				race(key)
@@ -48,65 +58,85 @@ func scanOf(k *keys, race func(key string)) Scan {
 	}
 }
 
-// 1890: EndStale ends only this node's hand-started steps left running before the process began and the asks past the
-// step bound (a younger ask is the stream's to redeliver), and never a key written meanwhile; EndOne ends one by hand, never one this process started.
+// 1890 and 1890/AC6: EndStale ends this node's hand-started running steps of another owner at once, whatever their age,
+// and deletes its asks of another owner (the stream redelivers them, ADR 0525 §6); of
+// the steps with no owner (an older build's), the hand-started ones left running before the process began and the asks
+// past the step bound (a younger ask is the stream's to redeliver); never a step this process owns or a key written
+// meanwhile. EndOne ends one by hand, never one this process owns or started.
 func TestEndStaleAndEndOne(t *testing.T) {
 	k := newKeys()
 	boot := time.Now()
 	oldBoot := Boot
 	Boot = boot
 	defer func() { Boot = oldBoot }()
-	put := func(node, id, tool, state string, started time.Time) {
+	gone := ownerOf("b00t", 4242, boot.Add(-time.Hour))
+	put := func(node, id, tool, state string, started time.Time, owner string) {
 		key, _ := delivery.StepKey(node, id)
-		_, _ = k.put(key, json.RawMessage(mustStep(t, delivery.Step{ID: id, Tool: tool, Node: node, State: state, Started: started})))
+		_, _ = k.put(key, json.RawMessage(mustStep(t, delivery.Step{ID: id, Tool: tool, Node: node, State: state, Started: started, Owner: owner})))
 	}
-	put("ace", "old1", "build_go_fetch", delivery.StepRunning, boot.Add(-time.Hour))
-	put("ace", "mjk3l9x0abcdef", "check ask", delivery.StepRunning, boot.Add(-time.Hour))
-	put("ace", "mjk3l9x0abcdee", "check ask", delivery.StepRunning, time.Now().Add(-5*time.Minute))
-	put("ace", "raced1", "build_go_test", delivery.StepRunning, boot.Add(-time.Hour))
-	put("ace", "new1", "build_go_fetch", delivery.StepRunning, boot.Add(time.Second))
-	put("ace", "done1", "build_go_fetch", delivery.StepPassed, boot.Add(-time.Hour))
-	put("g14", "other1", "build_go_fetch", delivery.StepRunning, boot.Add(-time.Hour))
+	put("ace", "old1", "build_go_fetch", delivery.StepRunning, boot.Add(-time.Hour), "")
+	put("ace", "mjk3l9x0abcdef", "check ask", delivery.StepRunning, boot.Add(-time.Hour), "")
+	put("ace", "mjk3l9x0abcdee", "check ask", delivery.StepRunning, time.Now().Add(-5*time.Minute), "")
+	put("ace", "mjk3l9x0abcded", "check ask", delivery.StepRunning, time.Now().Add(-5*time.Minute), gone) // note 21's ghost
+	put("ace", "gone2", "build_go_test", delivery.StepRunning, boot.Add(time.Second), gone)
+	put("ace", "mine1", "check ask", delivery.StepRunning, boot.Add(-time.Hour), Owner)
+	put("ace", "raced1", "build_go_test", delivery.StepRunning, boot.Add(-time.Hour), "")
+	put("ace", "new1", "build_go_fetch", delivery.StepRunning, boot.Add(time.Second), "")
+	put("ace", "done1", "build_go_fetch", delivery.StepPassed, boot.Add(-time.Hour), gone)
+	put("g14", "other1", "build_go_fetch", delivery.StepRunning, boot.Add(-time.Hour), gone)
 	// raced1 is ended by its own run between the read and the write.
 	raced := false
 	scan := scanOf(k, func(key string) {
 		if key == "ace.raced1" && !raced {
 			raced = true
-			put("ace", "raced1", "build_go_test", delivery.StepPassed, boot.Add(-time.Hour))
+			put("ace", "raced1", "build_go_test", delivery.StepPassed, boot.Add(-time.Hour), "")
 		}
 	})
-	ended, err := EndStale(scan, "ace", boot, nil)
-	if err != nil || len(ended) != 2 || ended[0] == ended[1] {
+	var said []string
+	ended, err := EndStale(scan, "ace", boot, func(f string, a ...any) { said = append(said, fmt.Sprintf(f, a...)) })
+	if err != nil || len(ended) != 4 {
 		t.Fatalf("ended %v, %v", ended, err)
 	}
-	if s := k.last("ace.old1"); s.State != delivery.StepFailed || s.Reason != RestartReason || s.Ended.IsZero() {
-		t.Errorf("old1 = %+v", s)
+	if _, held := k.puts["ace.mjk3l9x0abcded"]; held {
+		t.Errorf("the ghost ask's key is still held: %+v", k.last("ace.mjk3l9x0abcded"))
+	}
+	for _, key := range []string{"ace.old1", "ace.gone2"} {
+		if s := k.last(key); s.State != delivery.StepFailed || s.Reason != RestartReason || s.Ended.IsZero() {
+			t.Errorf("%s = %+v", key, s)
+		}
 	}
 	if s := k.last("ace.mjk3l9x0abcdef"); s.State != delivery.StepFailed || !strings.HasPrefix(s.Reason, "past the step bound: its asker stopped waiting at ") {
 		t.Errorf("the old ask = %+v", s)
 	}
-	for key, state := range map[string]string{"ace.mjk3l9x0abcdee": delivery.StepRunning, "ace.raced1": delivery.StepPassed, "ace.new1": delivery.StepRunning, "ace.done1": delivery.StepPassed, "g14.other1": delivery.StepRunning} {
+	if log := strings.Join(said, "\n"); !strings.Contains(log, "ace.mjk3l9x0abcded") || !strings.Contains(log, "deleted, left to the stream's redelivery") || !strings.Contains(log, "its owner "+gone+" is not this process "+Owner) {
+		t.Errorf("the log does not name the ghost and its owner:\n%s", log)
+	}
+	for key, state := range map[string]string{"ace.mjk3l9x0abcdee": delivery.StepRunning, "ace.mine1": delivery.StepRunning, "ace.raced1": delivery.StepPassed,
+		"ace.new1": delivery.StepRunning, "ace.done1": delivery.StepPassed, "g14.other1": delivery.StepRunning} {
 		if s := k.last(key); s.State != state {
 			t.Errorf("%s = %s, want %s", key, s.State, state)
 		}
 	}
-	// EndOne: refuses without why, a held step, one started by this process (a pulled ask or a step tool's), a step not
-	// running and another node's; ends a step a previous process left.
-	for _, c := range []struct{ id, why string }{{"old1", ""}, {"new1", "stuck"}, {"done1", "x"}, {"g14.other1", "x"}} {
+	// EndOne: refuses without why, a held step, one this process owns or (with no owner) started, a step not running and
+	// another node's; ends a step a previous process left.
+	for _, c := range []struct{ id, why string }{{"old1", ""}, {"new1", "stuck"}, {"mine1", "stuck"}, {"done1", "x"}, {"g14.other1", "x"}} {
 		if _, err := EndOne(scan, "ace", c.id, c.why, nil); err == nil {
 			t.Errorf("ended %s with why %q", c.id, c.why)
 		}
 	}
-	put("ace", "old2", "build_go_fetch", delivery.StepRunning, boot.Add(-time.Hour))
+	put("ace", "old2", "build_go_fetch", delivery.StepRunning, boot.Add(time.Second), gone)
 	if _, err := EndOne(scan, "ace", "old2", "x", func(string) bool { return true }); err == nil {
 		t.Error("ended a held step")
 	}
 	if _, err := EndOne(scan, "ace", "ace.old2", "stuck for good", nil); err != nil {
 		t.Fatal(err)
 	}
-	if s := k.last("ace.old2"); s.State != delivery.StepFailed || s.Reason != "stuck for good" {
+	if s := k.last("ace.old2"); s.State != delivery.StepFailed || s.Reason != "stuck for good" || s.Owner != gone {
 		t.Errorf("old2 = %+v", s)
 	}
+	if a, b := ownerOf("b", 1, boot), ownerOf("b", 1, boot.Add(time.Second)); a == b {
+		t.Errorf("two starts of one pid share the owner %q", a)
+	}
 }
 
 func mustStep(t *testing.T, s delivery.Step) []byte {

go/buildstep/step.go

@@ -1,6 +1,7 @@
 // Package buildstep is what both build modules share: the runner of a long step that answers a tool call at once
 // and ends on its key in the module's `steps` state (novox/hq ADR 0469 §2; issue 1471), the toolchain guard
-// (issue 1473) and the fetch of one commit over SSH (issue 1474).
+// (issue 1473), the fetch of one commit over SSH (issue 1474), and the failure contract of a test level with the parsers
+// of go test -json and node --test's TAP that fill it (failure.go, issue 1901; its conformance kit is package conformance).
 package buildstep
 
 import (
@@ -51,9 +52,9 @@ func Start(ctx context.Context, put Put, node, tool string, run func(ctx context
 	return step.ID, nil
 }
 
-// begin writes the step running under id.
+// begin writes the step running under id, owned by this process (Owner).
 func begin(put Put, node, tool, id, what string) (delivery.Step, string, error) {
-	step := delivery.Step{ID: id, Tool: tool, Node: node, State: delivery.StepRunning, Started: now().UTC(), What: what}
+	step := delivery.Step{ID: id, Tool: tool, Node: node, State: delivery.StepRunning, Started: now().UTC(), What: what, Owner: Owner}
 	key, err := delivery.StepKey(node, step.ID)
 	if err != nil {
 		return delivery.Step{}, "", err

go/buildstep/step_test.go

@@ -70,8 +70,9 @@ func TestStartAnswersAtOnceWithTheStepRunning(t *testing.T) {
 		t.Errorf("Start took %v", d)
 	}
 	s := k.last("ace." + id)
-	if s.State != delivery.StepRunning || s.Tool != "fetch" || s.Node != "ace" || s.ID != id || s.Started.IsZero() {
-		t.Errorf("step = %+v", s)
+	// 1890/AC5: the running key names this process as its owner.
+	if s.State != delivery.StepRunning || s.Tool != "fetch" || s.Node != "ace" || s.ID != id || s.Started.IsZero() || s.Owner != Owner || Owner == "" {
+		t.Errorf("step = %+v, want owner %q", s, Owner)
 	}
 }
 
@@ -100,7 +101,7 @@ func TestStepEndsPassedFailedOrRefusedOnItsKey(t *testing.T) {
 				t.Fatalf("ended key %q", got)
 			}
 			s := k.last("ace." + id)
-			if s.State != c.state || s.Reason != c.reason || string(s.Result) != c.result || s.Ended.IsZero() {
+			if s.State != c.state || s.Reason != c.reason || string(s.Result) != c.result || s.Ended.IsZero() || s.Owner != Owner {
 				t.Errorf("step = %+v", s)
 			}
 		})

go/buildstep/tap.go

@@ -0,0 +1,192 @@
+package buildstep
+
+// The reader of `node --test` under its TAP reporter (issue 1901's thorough fix; first written in mesh-build-node by
+// fix-1901ts): each failing test with its name, its file, its cause and its own block, never a passing line of an
+// earlier file, which is what node's default reporter left the first fifteen lines of.
+
+import (
+	"regexp"
+	"strings"
+)
+
+// NodeTestOptions is the NODE_OPTIONS a build module runs a package's test script with: node's TAP reporter, written to
+// the file dest, so whatever the script prints on its own output the report is whole and machine-readable. A script
+// that names a reporter of its own makes node refuse the run loudly ("--test-reporter must match the number of
+// --test-reporter-destination"), never quietly.
+func NodeTestOptions(dest string) string {
+	return "--test-reporter=tap --test-reporter-destination=" + dest
+}
+
+var ansiEscape = regexp.MustCompile("\x1b\\[[0-9;]*m")
+
+func stripANSI(s string) string { return ansiEscape.ReplaceAllString(s, "") }
+
+// ReadTAP reads the failing tests of a `node --test` run: report is what the TAP reporter wrote (NodeTestOptions'
+// file), console the script's own stdout and stderr, script the name of the script that ran and dir the package's
+// directory, which a test's file is made relative to. A suite that failed only because a test inside it did is not
+// reported twice. A test file that did not load (a syntax error, a crash, an error after its test ended) takes its
+// cause from the lines node wrote before it. When the report holds no failing test (node itself failed, or the script
+// failed before its tests ran: a build, a reporter refused) the failure is the console's (ConsoleFailure).
+func ReadTAP(pkg, script, dir, report, console string) []Failure {
+	var failed []Failure
+	all := strings.Split(stripANSI(strings.ReplaceAll(report, "\r\n", "\n")), "\n")
+	var cancelled []Failure // failed because a suite around them did: said after the failure that carries the cause
+	prev := 0               // the line after the last test block, passing or not: what the run wrote since belongs to the next test
+	for i := 0; i < len(all); i++ {
+		name, ok := tapNotOk(all[i])
+		if !ok {
+			if tapOk(all[i]) {
+				i = tapBlockEnd(all, i) - 1
+				prev = i + 1
+			}
+			continue
+		}
+		indent := len(all[i]) - len(strings.TrimLeft(all[i], " "))
+		block := []string{strings.TrimSpace(all[i])}
+		fields := map[string]string{}
+		var key string
+		inYAML := false
+		j := i + 1
+		for ; j < len(all); j++ {
+			t := strings.TrimSpace(all[j])
+			if !inYAML {
+				if t == "---" {
+					inYAML = true
+					continue
+				}
+				break
+			}
+			if t == "..." {
+				j++
+				break
+			}
+			block = append(block, strings.TrimRight(all[j], " \t"))
+			if k, v, found := tapKey(all[j], indent); found {
+				key = k
+				if v != "|-" && v != "|" {
+					fields[k] = strings.Trim(v, "'")
+				}
+			} else if key != "" && fields[key] == "" && t != "" {
+				fields[key] = t // the first line of a block scalar
+			}
+		}
+		from, at := prev, i
+		i, prev = j-1, j
+		if fields["failureType"] == "subtestsFailed" {
+			continue
+		}
+		cause := fields["error"]
+		if cause == "test failed" || cause == "" {
+			// a file that did not load, or an error after a test ended: node says only "test failed" and wrote the
+			// error as comment lines before it
+			var own []string
+			for _, l := range all[from:at] {
+				if t := strings.TrimSpace(l); strings.HasPrefix(t, "# ") && !strings.HasPrefix(t, "# Subtest") {
+					own = append(own, strings.TrimPrefix(t, "# "))
+				}
+			}
+			for _, l := range own {
+				if strings.Contains(l, "Error") {
+					cause = l
+					break
+				}
+			}
+			if cause == "" && len(own) > 0 {
+				cause = own[0]
+			}
+			block = append(own, block...)
+		}
+		if cause == "" {
+			cause = fields["failureType"]
+		}
+		if cause == "" {
+			cause = "the test failed and node said no error"
+		}
+		cause = CutLine(cause)
+		file := strings.TrimPrefix(fields["location"], "file://")
+		if dir != "" {
+			file = strings.TrimPrefix(file, strings.TrimSuffix(dir, "/")+"/")
+		}
+		f := Failure{Package: pkg, Test: name, File: file, Cause: cause, Output: Clip(block, cause)}
+		if fields["failureType"] == "cancelledByParent" {
+			cancelled = append(cancelled, f)
+			continue
+		}
+		failed = append(failed, f)
+	}
+	if failed = append(failed, cancelled...); len(failed) > 0 {
+		return failed
+	}
+	var comments []string
+	for _, l := range all {
+		if t := strings.TrimSpace(l); strings.HasPrefix(t, "# ") && !strings.HasPrefix(t, "# Subtest") && !tapCount(t) {
+			comments = append(comments, strings.TrimPrefix(t, "# "))
+		}
+	}
+	return []Failure{ConsoleFailure(pkg, script, strings.Join(comments, "\n")+"\n"+console)}
+}
+
+// tapCount says a comment is TAP's closing count ("# tests 3", "# pass 2", "# duration_ms 1.2").
+func tapCount(t string) bool {
+	for _, w := range []string{"tests", "suites", "pass", "fail", "cancelled", "skipped", "todo", "duration_ms"} {
+		if strings.HasPrefix(t, "# "+w+" ") {
+			return true
+		}
+	}
+	return false
+}
+
+// tapOk says a line is a passing test's "ok N - name", indented or not.
+func tapOk(l string) bool {
+	rest, ok := strings.CutPrefix(strings.TrimSpace(l), "ok ")
+	return ok && rest != "" && rest[0] >= '0' && rest[0] <= '9'
+}
+
+// tapBlockEnd is the line after the test line at i and its YAML block ("---" to "...").
+func tapBlockEnd(all []string, i int) int {
+	j := i + 1
+	if j >= len(all) || strings.TrimSpace(all[j]) != "---" {
+		return j
+	}
+	for j++; j < len(all); j++ {
+		if strings.TrimSpace(all[j]) == "..." {
+			return j + 1
+		}
+	}
+	return j
+}
+
+// tapNotOk is the test name of a "not ok N - name" line, indented or not; a TODO or SKIP directive fails nothing.
+func tapNotOk(l string) (string, bool) {
+	t := strings.TrimSpace(l)
+	rest, ok := strings.CutPrefix(t, "not ok ")
+	if !ok {
+		return "", false
+	}
+	if u := strings.ToUpper(rest); strings.Contains(u, " # TODO") || strings.Contains(u, " # SKIP") {
+		return "", false
+	}
+	if _, after, found := strings.Cut(rest, " - "); found {
+		rest = after
+	}
+	return strings.TrimSpace(rest), true
+}
+
+// tapKey is "key: value" of a field of a TAP block, whose lines sit two spaces deeper than their "not ok" line; a deeper
+// line is part of a block scalar (an error's lines, a stack).
+func tapKey(l string, indent int) (key, val string, ok bool) {
+	t := strings.TrimLeft(l, " ")
+	if len(l)-len(t) != indent+2 {
+		return "", "", false
+	}
+	k, v, found := strings.Cut(t, ": ")
+	if !found {
+		if k, found = strings.CutSuffix(t, ":"); !found {
+			return "", "", false
+		}
+	}
+	if k == "" || strings.ContainsAny(k, " ()/") {
+		return "", "", false
+	}
+	return k, strings.TrimSpace(v), true
+}

go/buildstep/trees.go

@@ -25,6 +25,8 @@ type ModuleTree struct {
 	// Paths are, of a module whose every artifact names its paths, each named path's git object id at the commit; Tree
 	// is then their delivery.NamedTree with Manifest (novox/hq ADR 0499 clause 2). Absent otherwise.
 	Paths map[string]string `json:"paths,omitempty"`
+	// Packages are the mesh packages the directory's go.sum names (delivery.MeshPackagesOf, novox/hq ADR 0573 §2).
+	Packages []string `json:"packages,omitempty"`
 }
 
 var lockFiles = []string{"go.sum", "package-lock.json"}
@@ -67,6 +69,9 @@ func ModuleTrees(ctx context.Context, run forgekey.Runner, env []string, dir, co
 					mt.Locks = map[string]string{}
 				}
 				mt.Locks[lock] = sha256Hex(raw)
+				if lock == "go.sum" {
+					mt.Packages = delivery.MeshPackagesOf(raw) // the mesh packages it uses (novox/hq ADR 0573 §2)
+				}
 			}
 		}
 		trees[mdir] = mt
@@ -75,11 +80,12 @@ func ModuleTrees(ctx context.Context, run forgekey.Runner, env []string, dir, co
 }
 
 // narrow sets mt's Paths and its named Tree when the module's manifest names paths on every artifact (novox/hq ADR 0499
-// clause 2): one `git ls-tree -z` gives each named path's object at commit. The merge preview reads the manifest here, as
-// the indexer does, with catalogue.ParseManifestForInputs (issue 1751), and no other build step reads paths from one (ADR 0495 clause 1). A manifest that does not parse
-// is not narrowed: the indexer gives it none. A named path absent at commit fails, naming the module and the path.
+// clause 2): one `git ls-tree -z` gives each named path's object at commit. The merge preview decodes the manifest here
+// (catalogue.Decode: a build step judges no manifest, novox/hq ADR 0578 §3), and no other build step reads paths from one
+// (ADR 0495 clause 1). A manifest that does not decode is not narrowed: the indexer gives it none. A named path absent at
+// commit fails, naming the module and the path.
 func narrow(ctx context.Context, run forgekey.Runner, env []string, dir, commit, mdir string, raw []byte, mt *ModuleTree) error {
-	m, err := catalogue.ParseManifestForInputs(raw)
+	m, err := catalogue.Decode(raw)
 	if err != nil {
 		return nil
 	}

go/buildstep/trees_named_test.go

@@ -75,20 +75,17 @@ func TestModuleTreesFailsNamingANamedPathAbsentAtTheCommit(t *testing.T) {
 	}
 }
 
-// A manifest whose config value falls back to a predefined key is narrowed here as the indexer narrows it: both read it
-// with catalogue.ParseManifestForInputs (issue 1751), so a build module holding no published list computes the same
-// tree (ADR 0499 clause 2).
+// A manifest whose config value falls back to a predefined key is narrowed here: the merge preview decodes it and judges
+// nothing (novox/hq ADR 0578 §3), so a build module holding no published list computes the tree the indexer does (ADR
+// 0499 clause 2; issue 1751).
 func TestModuleTreesNarrowsAManifestFallingBackToAPredefinedKey(t *testing.T) {
 	was := catalogue.ReplacePublished(nil) // the build modules' case: no published list
 	defer catalogue.ReplacePublished(was)
 	root := t.TempDir()
 	raw := `{"module":"xterm","version":"1","config":{"size":{"type":"number","description":"The text size.","predefined":"font-size","default":12,"runtime":true}},` +
 		`"build":{"artifacts":[{"name":"lib","kind":"package","language":"typescript","paths":["src"]}]}}`
-	if _, err := catalogue.ParseManifest([]byte(raw)); err == nil {
-		t.Fatal("ParseManifest reads the manifest with no list; the test proves nothing")
-	}
-	if _, err := catalogue.ParseManifestForInputs([]byte(raw)); err != nil {
-		t.Fatalf("the indexer's read refuses the manifest: %v", err)
+	if _, err := catalogue.Decode([]byte(raw)); err != nil {
+		t.Fatalf("the preview's read refuses the manifest: %v", err)
 	}
 	writeTreeFile(t, root, "module.json", raw)
 	run := func(ctx context.Context, env []string, name string, args ...string) forgekey.Ran {

go/buildstep/trees_test.go

@@ -33,7 +33,8 @@ func TestModuleTreesAnswersTreeManifestAndLocksPerModuleDirectory(t *testing.T)
 	writeTreeFile(t, root, "module.json", `{"root":1}`)
 	writeTreeFile(t, root, "go.sum", "rootsum")
 	writeTreeFile(t, root, "modules/a/module.json", `{"a":1}`)
-	writeTreeFile(t, root, "modules/a/go.sum", "asum")
+	asum := "git.novox.be/novox/mesh-sdk/go v0.1.7 h1:x=\ngit.novox.be/novox/mesh-sdk/go v0.1.7/go.mod h1:y=\ngithub.com/nats-io/nats.go v1.0.0 h1:z=\n"
+	writeTreeFile(t, root, "modules/a/go.sum", asum)
 	writeTreeFile(t, root, "modules/a/package-lock.json", "alock")
 	writeTreeFile(t, root, "modules/b/module.json", `{"b":1}`)
 	merge := strings.Repeat("c", 40)
@@ -55,8 +56,9 @@ func TestModuleTreesAnswersTreeManifestAndLocksPerModuleDirectory(t *testing.T)
 		t.Fatal(err)
 	}
 	want := map[string]ModuleTree{
-		".":         {Tree: "tree-of-" + merge + "^{tree}", Manifest: hexOf(`{"root":1}`), Locks: map[string]string{"go.sum": hexOf("rootsum")}},
-		"modules/a": {Tree: "tree-of-" + merge + ":modules/a", Manifest: hexOf(`{"a":1}`), Locks: map[string]string{"go.sum": hexOf("asum"), "package-lock.json": hexOf("alock")}},
+		".": {Tree: "tree-of-" + merge + "^{tree}", Manifest: hexOf(`{"root":1}`), Locks: map[string]string{"go.sum": hexOf("rootsum")}},
+		"modules/a": {Tree: "tree-of-" + merge + ":modules/a", Manifest: hexOf(`{"a":1}`), Locks: map[string]string{"go.sum": hexOf(asum), "package-lock.json": hexOf("alock")},
+			Packages: []string{"git.novox.be/novox/mesh-sdk/go"}}, // issue 1585: the mesh packages its go.sum names
 		"modules/b": {Tree: "tree-of-" + merge + ":modules/b", Manifest: hexOf(`{"b":1}`)},
 	}
 	if !reflect.DeepEqual(got, want) {

go/buildstep/watch_settings_linux.go

@@ -0,0 +1,112 @@
+//go:build linux
+
+package buildstep
+
+import (
+	"context"
+	"encoding/binary"
+	"os"
+	"path/filepath"
+	"syscall"
+)
+
+const settingsMask = syscall.IN_CLOSE_WRITE | syscall.IN_MOVED_TO | syscall.IN_CREATE
+
+// watchSettings wakes the puller each time its settings file is written or replaced (inotify on the file's directory, so
+// a rename over it counts): the event the node-engine's refill of the file is, which a parked puller at capacity 0
+// otherwise never sees. No timer: it blocks on the kernel's event. When the kernel drops the watch (IN_IGNORED: the
+// directory was replaced or removed) it is added again, said once; while the directory is missing the nearest existing
+// ancestor is watched for the directory's return. A watch that cannot start is said once.
+func (p *Puller) watchSettings(ctx context.Context) {
+	if p.SettingsFile == "" {
+		return
+	}
+	fd, err := syscall.InotifyInit1(syscall.IN_CLOEXEC | syscall.IN_NONBLOCK)
+	if err != nil {
+		p.logf("the settings file %s cannot be watched, so a refill of it wakes the puller only at another event: %v", p.SettingsFile, err)
+		return
+	}
+	f := os.NewFile(uintptr(fd), "inotify")
+	defer f.Close()
+	dir, base := filepath.Split(p.SettingsFile)
+	dir = filepath.Clean(dir)
+	// arm watches dir, or when it is missing its nearest existing ancestor; it returns the watch descriptor and whether it
+	// is the directory's own.
+	arm := func() (int, bool, error) {
+		wd, err := syscall.InotifyAddWatch(fd, dir, settingsMask)
+		if err == nil {
+			return wd, true, nil
+		}
+		for up := filepath.Dir(dir); ; up = filepath.Dir(up) {
+			wd, aerr := syscall.InotifyAddWatch(fd, up, settingsMask)
+			if aerr == nil {
+				// the directory may have come back between the two calls: look once more, now that the ancestor is watched
+				if own, oerr := syscall.InotifyAddWatch(fd, dir, settingsMask); oerr == nil {
+					return own, true, nil
+				}
+				return wd, false, nil
+			}
+			if up == filepath.Dir(up) {
+				return 0, false, err
+			}
+		}
+	}
+	wd, own, err := arm()
+	if err != nil {
+		p.logf("the settings file %s cannot be watched, so a refill of it wakes the puller only at another event: %v", p.SettingsFile, err)
+		return
+	}
+	if p.watching != nil {
+		p.watching()
+	}
+	go func() { <-ctx.Done(); f.Close() }()
+	buf := make([]byte, 4096)
+	for {
+		n, err := f.Read(buf)
+		if err != nil {
+			return
+		}
+		hit, rearm := false, false
+		for off := 0; off+16 <= n; {
+			ewd := int(int32(binary.LittleEndian.Uint32(buf[off:])))
+			mask := binary.LittleEndian.Uint32(buf[off+4:])
+			l := int(binary.LittleEndian.Uint32(buf[off+12:]))
+			name := buf[off+16 : off+16+l]
+			for i, c := range name {
+				if c == 0 {
+					name = name[:i]
+					break
+				}
+			}
+			switch {
+			case mask&syscall.IN_IGNORED != 0 && ewd == wd:
+				rearm = true
+			case ewd == wd && own && string(name) == base:
+				hit = true
+			case ewd == wd && !own:
+				rearm = true // something appeared where the directory was: look again
+			}
+			off += 16 + l
+		}
+		if rearm {
+			nwd, nown, err := arm()
+			if err != nil {
+				p.logf("the settings file %s is no longer watched, so a refill of it wakes the puller only at another event: %v", p.SettingsFile, err)
+				return
+			}
+			if own || nown { // said once per loss of the watch on the directory itself
+				if own {
+					p.logf("the watch of the settings file %s was dropped (its directory was replaced); watching again", p.SettingsFile)
+				}
+			}
+			wd, own = nwd, nown
+			if p.watching != nil {
+				p.watching()
+			}
+			hit = true // the file may have been refilled meanwhile
+		}
+		if hit {
+			p.Wake()
+		}
+	}
+}

go/buildstep/watch_settings_other.go

@@ -0,0 +1,8 @@
+//go:build !linux
+
+package buildstep
+
+import "context"
+
+// watchSettings watches nothing off Linux: the puller wakes at its other events.
+func (p *Puller) watchSettings(ctx context.Context) {}

go/buscompose/accounts.go

@@ -0,0 +1,253 @@
+package buscompose
+
+import (
+	"encoding/json"
+	"fmt"
+	"slices"
+	"strings"
+	"time"
+)
+
+// **The accounts the grants part wants, and the one shape a held account takes** (novox/hq ADR 0561 §1, §2; issue 774).
+//
+// The bus composer derives every user from placement, the manifests and the wants. For each account the mesh mints (a
+// module's, a module's process's, a machine's provisioner client's), the grants part writes one key of its state
+// `accounts`, keyed by the bus user, holding the account's fields that are not secret: what the controller's credential
+// carries today beside the password. The vault watches that state, mints the user it holds no value for, and keeps the
+// value as the module's own secret on that node, built by HeldCredential, which gives byte for byte the controller's
+// shape, so a runtime reads it unchanged. The state is read by the vault alone (NamedReaders), as `bus-accounts` is read
+// by the grants part alone.
+//
+// The node accounts, the controller's own, an enrolment user and a person are never wanted here: the vault mints none
+// of them (ADR 0561 §4, §5).
+
+// AccountsState is the grants part's state of wanted accounts, by bus user.
+const AccountsState = "accounts"
+
+// GrantsAccounts is that state as a reader names it (`<owner>.<name>`).
+const GrantsAccounts = GrantsModule + "." + AccountsState
+
+// AccountsBucket is the bucket the state lives in.
+var AccountsBucket = BucketName(GrantsModule, AccountsState)
+
+// AccountsSubject is the subject of one wanted account's key: `$KV.mesh-grants_accounts.<user>`.
+func AccountsSubject(user string) string { return "$KV." + AccountsBucket + "." + user }
+
+// AccountIssuedEvent is what the vault says when it minted an account: AccountIssued, never a value or a hash.
+const AccountIssuedEvent = "account-issued"
+
+// AccountIssuedSubject is where it says it, as the runtime addresses mesh-vault's events.
+const AccountIssuedSubject = "mesh.mod." + VaultSeat + ".event." + AccountIssuedEvent
+
+// ClaimedSeat is one seat a module claims, as its runtime needs it (the controller's seatClaimed): the name, the scope (a
+// node-scoped seat's verb carries the machine) and the verbs the runtime serves for it.
+type ClaimedSeat struct {
+	Seat   string   `json:"seat"`
+	Scope  string   `json:"scope"`
+	Serves []string `json:"serves,omitempty"`
+}
+
+// WantedAccount is one key of the grants part's state `accounts`: an account the mesh needs, without its password.
+type WantedAccount struct {
+	User string `json:"user"`
+	// Kind is KindModule (KindNodeTools for the runtime, named as a module is), KindProcess or KindProvisioner.
+	Kind   Kind   `json:"kind"`
+	Node   string `json:"node"`
+	Module string `json:"module"`
+	// Process is a KindProcess account's process id.
+	Process string `json:"process,omitempty"`
+	// URL is the bus's address as that node reaches it, `nats://<host>:<port>`; Fingerprint the bus certificate's.
+	URL         string `json:"url"`
+	Fingerprint string `json:"fingerprint,omitempty"`
+	// Claims are a module's claims with the verbs each seat promises: none for a process or a provisioner client.
+	Claims []ClaimedSeat `json:"claims,omitempty"`
+	// At is when the grants part wrote the key: not compared (Same).
+	At time.Time `json:"at"`
+}
+
+// mintedKinds are the kinds of account the vault mints (ADR 0561 §1).
+var mintedKinds = []Kind{KindModule, KindNodeTools, KindProcess, KindProvisioner}
+
+// principal is the account as the composer names it.
+func (w WantedAccount) principal() Principal {
+	return Principal{Kind: w.Kind, Node: w.Node, Module: w.Module, Process: w.Process}
+}
+
+// Valid says why w is not an account the vault may mint, or nil: a kind it mints, every name a subject token, the user
+// the one the composer derives from them, and an address to reach the bus at.
+func (w WantedAccount) Valid() error {
+	if !slices.Contains(mintedKinds, w.Kind) {
+		return fmt.Errorf("%s is a %s account, which the vault never mints (ADR 0561 §4)", w.User, w.Kind)
+	}
+	for what, v := range map[string]string{"node": w.Node, "module": w.Module} {
+		if !safeSubject.MatchString(v) {
+			return fmt.Errorf("%s: the %s %q is not a name the mesh writes", w.User, what, v)
+		}
+	}
+	if w.Kind == KindProcess && !safeSubject.MatchString(w.Process) {
+		return fmt.Errorf("%s: the process %q is not a name the mesh writes", w.User, w.Process)
+	}
+	if w.Kind != KindProcess && w.Process != "" {
+		return fmt.Errorf("%s: only a process's account names a process", w.User)
+	}
+	if want := w.principal().Username(); w.User != want {
+		return fmt.Errorf("%s is not the user of a %s account of %s on %s (that is %s)", w.User, w.Kind, w.Module, w.Node, want)
+	}
+	if !strings.HasPrefix(w.URL, "nats://") || len(w.URL) == len("nats://") {
+		return fmt.Errorf("%s names no bus address (url, nats://<host>:<port>)", w.User)
+	}
+	if len(w.Claims) > 0 && w.Kind != KindModule && w.Kind != KindNodeTools {
+		return fmt.Errorf("%s: a %s account holds no seat, so it carries no claims", w.User, w.Kind)
+	}
+	return nil
+}
+
+// Same says whether two wanted accounts want the same account: every field but when it was written.
+func (w WantedAccount) Same(o WantedAccount) bool {
+	a, b := w, o
+	a.At, b.At = time.Time{}, time.Time{}
+	ra, _ := json.Marshal(a)
+	rb, _ := json.Marshal(b)
+	return string(ra) == string(rb)
+}
+
+// OwnSecret is the module's own secret the account is held in: `broker`, `broker-<process id>` or `provisioner-broker`
+// (the controller's names, ADR 0436 §2, ADR 0349 §11).
+func (w WantedAccount) OwnSecret() string {
+	switch w.Kind {
+	case KindProcess:
+		return "broker-" + w.Process
+	case KindProvisioner:
+		return "provisioner-broker"
+	}
+	return "broker"
+}
+
+// ReadWantedAccount reads the key user of the state: refused when it is not a valid wanted account of that user.
+func ReadWantedAccount(user string, raw []byte) (WantedAccount, error) {
+	var w WantedAccount
+	if err := json.Unmarshal(raw, &w); err != nil {
+		return WantedAccount{}, fmt.Errorf("%s %s is not a wanted account: %w", GrantsAccounts, user, err)
+	}
+	if w.User != user {
+		return WantedAccount{}, fmt.Errorf("%s %s names the user %q", GrantsAccounts, user, w.User)
+	}
+	return w, w.Valid()
+}
+
+// AccountIssued is the vault's account-issued: which account it minted, and its generation. Never a value or a hash.
+type AccountIssued struct {
+	User       string    `json:"user"`
+	Kind       Kind      `json:"kind"`
+	Node       string    `json:"node"`
+	Module     string    `json:"module"`
+	Process    string    `json:"process,omitempty"`
+	Generation int       `json:"generation"`
+	At         time.Time `json:"at"`
+}
+
+// HeldCredential is the value the account's holder reads, exactly as the controller builds it today (issueWith,
+// sealProcess and sealProvisionerClient): a module's `{url, fingerprint, node, module, user, password, claims}`, a
+// process's without claims, a provisioner client's without module or claims; an empty fingerprint or claims left out.
+func HeldCredential(w WantedAccount, password string) ([]byte, error) {
+	if err := w.Valid(); err != nil {
+		return nil, err
+	}
+	if password == "" {
+		return nil, fmt.Errorf("%s: an account is held with its password", w.User)
+	}
+	switch w.Kind {
+	case KindProcess:
+		return json.Marshal(struct {
+			URL         string `json:"url"`
+			Fingerprint string `json:"fingerprint,omitempty"`
+			Node        string `json:"node"`
+			Module      string `json:"module"`
+			User        string `json:"user"`
+			Password    string `json:"password"`
+		}{URL: w.URL, Fingerprint: w.Fingerprint, Node: w.Node, Module: w.Module, User: w.User, Password: password})
+	case KindProvisioner:
+		return json.Marshal(struct {
+			URL         string `json:"url"`
+			Fingerprint string `json:"fingerprint,omitempty"`
+			Node        string `json:"node"`
+			User        string `json:"user"`
+			Password    string `json:"password"`
+		}{URL: w.URL, Fingerprint: w.Fingerprint, Node: w.Node, User: w.User, Password: password})
+	}
+	return json.Marshal(struct {
+		URL         string        `json:"url"`
+		Fingerprint string        `json:"fingerprint,omitempty"`
+		Node        string        `json:"node"`
+		Module      string        `json:"module"`
+		User        string        `json:"user"`
+		Password    string        `json:"password"`
+		Claims      []ClaimedSeat `json:"claims,omitempty"`
+	}{URL: w.URL, Fingerprint: w.Fingerprint, Node: w.Node, Module: w.Module, User: w.User, Password: password,
+		Claims: w.Claims})
+}
+
+// **The lease write** (novox/hq ADR 0561 §3, §6). The controller's lease is the one key `holder` of its bucket
+// (LeaseBucket). The operator's credential hands it away by writing a value that names its new holder in `handed-to`;
+// while the key holds that, the grants part creates the durable consumers an account needs, the assigner reads the grants
+// part's grants (delivery.GrantSource), and the vault retires and rotates accounts. A controller's value, a key deleted or
+// expired, or one that cannot be read or parsed, turn those off. No clock and no setting turns it.
+//
+// **Minting is no longer on the lease** (issue 774, research 072's gap "vault mints after the lease"): the vault is the
+// one issuer of every account the grants part wants, whoever holds the lease, and the controller mints none once a vault
+// is installed (it forwards `module issue` to the vault's issue-account). One issuer at every moment holds by who mints,
+// not by the lease: an account whose value the vault holds is never minted anew, and a value the controller hands or
+// moves never replaces one the vault minted.
+
+// ControllerLease is the lease's bucket as a reader names it; the vault and the grants part alone read it
+// (NamedReaders), the controller's announcement marking it readable by nobody.
+const ControllerLease = ControllerSeat + ".lease"
+
+// ControllerLeaseKey is the lease's one key.
+const ControllerLeaseKey = leaseKey
+
+// LeaseHolder is the lease key's value: a controller instance's (mesh-controller internal/lease Holder), or, once handed
+// away, one naming its holder in HandedTo.
+type LeaseHolder struct {
+	Instance string    `json:"instance,omitempty"`
+	Host     string    `json:"host,omitempty"`
+	Epoch    uint64    `json:"epoch,omitempty"`
+	Taken    time.Time `json:"taken,omitzero"`
+	Renewed  time.Time `json:"renewed,omitzero"`
+	// HandedTo is who holds the lease once the controller handed it away: never a controller instance.
+	HandedTo string `json:"handed-to,omitempty"`
+	// HandedBy is the credential that wrote it (the operator's), and Why its reason.
+	HandedBy string `json:"handed-by,omitempty"`
+	Why      string `json:"why,omitempty"`
+	// Ask is the operator's ask whose warrant handed it (novox/hq ADR 0582 clause 3: "with the why, the ask and the
+	// time"), and At when it was written. Neither turns the lease: LeaseHandedAway reads HandedTo alone.
+	Ask string    `json:"ask,omitempty"`
+	At  time.Time `json:"at,omitzero"`
+}
+
+// LeaseHandedAway reads the lease key as a getter answered it (its value, whether it was there, the read's error) and
+// says whether it is handed to a holder that is no controller, with why either way.
+func LeaseHandedAway(raw []byte, found bool, readErr error) (bool, string) {
+	switch {
+	case readErr != nil:
+		return false, "the controller's lease cannot be read (" + readErr.Error() + "), so it is not handed away"
+	case !found || len(raw) == 0 || string(raw) == "null":
+		return false, "no lease is written (expired, deleted, or never taken): a controller may take it, so it is not handed away"
+	}
+	var h LeaseHolder
+	if err := json.Unmarshal(raw, &h); err != nil {
+		return false, "the controller's lease is not readable as a holder (" + err.Error() + "), so it is not handed away"
+	}
+	if strings.TrimSpace(h.HandedTo) == "" {
+		who := h.Instance
+		if who == "" {
+			who = "an instance that names itself not"
+		}
+		return false, "the controller holds the lease (" + who + "), so it is not handed away (ADR 0561 §3)"
+	}
+	if h.Instance != "" {
+		return false, "the lease names both a controller instance (" + h.Instance + ") and a holder it is handed to (" +
+			h.HandedTo + "), so it is not handed away"
+	}
+	return true, "the lease is handed to " + h.HandedTo + " (ADR 0561 §3)"
+}

go/buscompose/announced.go

@@ -1,6 +1,7 @@
 package buscompose
 
 import (
+	"slices"
 	"sort"
 	"strings"
 
@@ -41,16 +42,12 @@ func ControllerAnnouncement(node string) announce.States {
 	return s
 }
 
-// ReadsAnnounced splits a reader's `reads` (`<owner>.<name>`) by what each owner announced: granted when the owner
-// announced the state readable, or announced nothing yet (the transition); refused when the owner announced and did
-// not announce that state readable.
-func ReadsAnnounced(reads []string, announced map[string]announce.States) (granted, refused []string) {
-	return ReadsAnnouncedBy("", reads, announced)
-}
-
-// ReadsAnnouncedBy is ReadsAnnounced for one reader module, which also honours the readers an owner named for a state
-// (announce.State.Readers) and the composer's named readers (NamedReaders, ADR 0547 clause 9): a read named for other
-// modules is refused. An empty reader is judged by the readable mark alone.
+// ReadsAnnouncedBy splits one reader module's `reads` (`<owner>.<name>`) by what each owner announced: granted when the
+// owner announced the state readable (by this reader, where it named its readers: announce.State.Readers), when the
+// composer names the reader among the state's readers (NamedReaders, ADR 0547 clause 9), or when the owner announced
+// nothing yet (the transition); refused otherwise, and a read named for other modules is refused. There is no judgement
+// without the reader (issue 774): one made without it refused every named reader, and Users judges again for the
+// reader whatever split it is given (withAnnouncedReads). An empty reader is judged by the readable mark alone.
 func ReadsAnnouncedBy(reader string, reads []string, announced map[string]announce.States) (granted, refused []string) {
 	for _, r := range reads {
 		owner, name, ok := strings.Cut(r, ".")
@@ -58,6 +55,10 @@ func ReadsAnnouncedBy(reader string, reads []string, announced map[string]announ
 		switch {
 		case reader != "" && !ReaderMay(reader, r):
 			refused = append(refused, r)
+		case reader != "" && namedReader(reader, r):
+			// A state the composer names its readers for is theirs whatever its owner announced (ADR 0561 §3: the
+			// controller's lease, which its announcement marks readable by nobody).
+			granted = append(granted, r)
 		case reader != "" && ok && said && s.Keeps(name):
 			if s.ReadableBy(name, reader) {
 				granted = append(granted, r)
@@ -95,3 +96,8 @@ func NotAnnounced(r Records) []string {
 	sort.Strings(out)
 	return out
 }
+
+// namedReader says the composer names module among the readers of read (NamedReaders).
+func namedReader(module, read string) bool {
+	return slices.Contains(NamedReaders[strings.TrimSpace(read)], module)
+}

go/buscompose/create.go

@@ -86,3 +86,30 @@ func ModuleStreamConfig(m ModuleStream) jetstream.StreamConfig {
 	}
 	return cfg
 }
+
+// ConsumerConfig is a pull consumer as the controller's EnsureConsumer creates it (mesh-controller internal/broker
+// JetStream.EnsureConsumer, a consumer not there yet): its durable name, explicit acks, its ack wait, max deliver and max
+// ack pending, its description, one filter or several, and from the stream's end when it is made FromNow. The grants part
+// creates a module's and a process's consumers with it from the lease write (novox/hq ADR 0561 §6): a create alone,
+// never an update of one the bus holds. A push consumer or a queue group is the controller's own and never made here.
+func ConsumerConfig(c Consumer) jetstream.ConsumerConfig {
+	cfg := jetstream.ConsumerConfig{
+		Durable:       c.Name,
+		AckPolicy:     jetstream.AckExplicitPolicy,
+		AckWait:       time.Duration(c.AckWaitSeconds) * time.Second,
+		MaxDeliver:    c.MaxDeliver,
+		MaxAckPending: c.MaxAckPending,
+		Description:   c.Why,
+	}
+	switch len(c.Filters) {
+	case 0:
+	case 1:
+		cfg.FilterSubject = c.Filters[0]
+	default:
+		cfg.FilterSubjects = c.Filters
+	}
+	if c.FromNow {
+		cfg.DeliverPolicy = jetstream.DeliverNewPolicy
+	}
+	return cfg
+}

go/buscompose/creates_streams_test.go

@@ -22,7 +22,13 @@ func TestTheGrantsPartCreatesOnlyDeclaredStreams(t *testing.T) {
 				Streams: []ModuleStream{{Module: "mesh-delivery-builder", Name: "BUILDASKS", Events: []string{"ask"}}}},
 			{Module: GrantsModule, State: []Bucket{{Module: GrantsModule, Name: "assertions"}}, Reads: []string{VaultBusAccounts}},
 			{Module: RuntimeModule},
+			// The node-engine's manifest as a placement names it (issue 774, met twice on 2026-10-30): no account of its
+			// own, so the runner would carry it, and its state is the node's to write alone.
+			{Module: EngineModule, NoAccount: true, Consumes: []string{"restic.backed-up"},
+				State: []Bucket{{Module: EngineModule, Name: "health"}, {Module: EngineModule, Name: EngineActsState}}},
 		}},
+		// The node-engine's own manifest, placed on every node though no node is assigned it (novox/hq ADR 0563 §2, §3).
+		Engine: &Declared{Module: EngineModule, State: []Bucket{{Module: EngineModule, Name: EngineActsState}}},
 	}
 	users, err := Users(records)
 	if err != nil {
@@ -30,6 +36,9 @@ func TestTheGrantsPartCreatesOnlyDeclaredStreams(t *testing.T) {
 	}
 	perms := map[string]Permissions{}
 	for _, u := range users {
+		if u.Module == EngineModule {
+			t.Errorf("the node-engine's manifest composed a user of its own: %s", u.Username())
+		}
 		if u.Kind == KindNode || u.Kind == KindNodeTools {
 			p, err := PermissionsFor(u)
 			if err != nil {
@@ -62,8 +71,24 @@ func TestTheGrantsPartCreatesOnlyDeclaredStreams(t *testing.T) {
 		{GrantsModule, "$JS.API.STREAM.CREATE.KV_mesh-delivery-builder_undeclared", false},
 		{GrantsModule, "$JS.API.STREAM.CREATE.EVENTS", false},
 		{GrantsModule, "$JS.API.STREAM.CREATE.ASSIGNMENTS", false},
+		// Research 072 row 33: a runtime reads its membership from the grants part's state, never the assignments stream.
+		{"mesh-delivery-builder", "$JS.API.DIRECT.GET.ASSIGNMENTS.mesh.assignment.novox.mesh-delivery-builder", false},
 		{GrantsModule, "$JS.API.STREAM.INFO.EVENTS", false},
 		{"mesh-delivery-builder", "$JS.API.STREAM.CREATE.KV_mesh-delivery-builder_steps", false},
+		// The node-engine's acts: created by the grants part, written by each node's engine under its own keys alone.
+		{GrantsModule, "$JS.API.STREAM.CREATE.KV_mesh-host_acts", true},
+		{"node.ace", "$JS.API.STREAM.CREATE.KV_mesh-host_acts", false},
+		{"node.ace", "$KV.mesh-host_acts.ace.act.hand-over-1", true},
+		{"node.ace", "$KV.mesh-host_acts.ace.open.hand-over.abc", true},
+		{"node.ace", "$KV.mesh-host_acts.novox.act.hand-over-1", false},
+		{"node.ace", "$JS.API.DIRECT.GET.KV_mesh-host_acts.$KV.mesh-host_acts.ace.ask.hand-over-1", true},
+		{"node.ace", "$JS.API.DIRECT.GET.KV_mesh-host_acts.$KV.mesh-host_acts.novox.ask.hand-over-1", false},
+		{"novox.node-tools", "$KV.mesh-host_acts.novox.act.hand-over-1", false},
+		// The runner never carries the engine (issue 774): its health report is the node's own key alone.
+		{"novox.node-tools", "$KV.mesh-host_health.novox", false},
+		{"novox.node-tools", "$KV.mesh-host_acts.novox.ask.x", false},
+		{"node.novox", "$KV.mesh-host_health.novox", true},
+		{"node.novox", "$KV.mesh-host_health.ace", false},
 		// The sealed user list (ADR 0547 clause 7): the grants part writes its own bucket and no other.
 		{GrantsModule, "$JS.API.STREAM.CREATE.OBJ_mesh-grants-user-list", true},
 		{GrantsModule, "$O.mesh-grants-user-list.C.abc", true},

go/buscompose/derived.go

@@ -247,6 +247,30 @@ func ConsumersOf(users []Principal) []ModuleConsumer {
 	return out
 }
 
+// AccountConsumers are the durable consumers an account needs (novox/hq ADR 0561 §6): of ConsumersOf, each module's on
+// EVENTS and each process's on its own work queue, never one on a module stream it hears (those the controller makes with
+// the stream's grant). The grants part creates them from the lease write, with these configurations.
+func AccountConsumers(users []Principal) []ModuleConsumer {
+	queues := map[string]bool{}
+	for _, p := range users {
+		for _, q := range p.Queues {
+			queues[q.Stream] = true
+		}
+		for _, d := range p.Carries {
+			for _, q := range d.Queues {
+				queues[q.Stream] = true
+			}
+		}
+	}
+	var out []ModuleConsumer
+	for _, mc := range ConsumersOf(users) {
+		if mc.Consumer.Stream == consumerStream(Principal{Kind: KindModule}) || queues[mc.Consumer.Stream] {
+			out = append(out, mc)
+		}
+	}
+	return out
+}
+
 // HolderConsumerFor is the worker a seat's holders share on that seat's work queue.
 //
 // **One worker for every holder, and each holder pulls one ask when it is idle** (novox/hq ADR

go/buscompose/engine.go

@@ -0,0 +1,84 @@
+package buscompose
+
+import (
+	"git.novox.be/novox/mesh-sdk/go/asks"
+	"git.novox.be/novox/mesh-sdk/go/catalogue"
+	"git.novox.be/novox/mesh-sdk/go/delivery"
+	"git.novox.be/novox/mesh-sdk/go/provisions"
+)
+
+// The node seat node-engine (novox/hq ADR 0563 §1): every node's engine holds it on its own bus account, and no module
+// claims it. Its verbs and events are the catalogue's (catalogue.EngineVerbs), read here rather than copied.
+
+// EngineSeat is the seat.
+const EngineSeat = catalogue.EngineSeat
+
+// EngineModule is the node-engine's manifest's module name, and EngineActsState its state the acts asked through the
+// node seat and its own asks are kept in (ADR 0563 §2, §3: "the engine's own state"): the bucket mesh-host_acts, keys
+// `<node>.act.<id>`, `<node>.open.<act>.<digest>` and `<node>.ask.<id>`, each written by that node's engine alone.
+const (
+	EngineModule    = "mesh-host"
+	EngineActsState = "acts"
+)
+
+// EngineActsBucket is that state's bucket.
+var EngineActsBucket = BucketName(EngineModule, EngineActsState)
+
+// EnginePackagesBucket is the engine's state of its node's declared packages (novox/hq ADR 0565 clause 6): one key, the
+// node's name, written by that node's engine alone.
+var EnginePackagesBucket = BucketName(EngineModule, delivery.EnginePackagesState)
+
+// EngineDataBucket is the engine's state of its node's placed modules' data items (novox/hq ADR 0577 clause 1): one
+// key `<node>.<module>` per module, written by that node's engine alone.
+var EngineDataBucket = delivery.EngineDataBucket
+
+// EnginePackagesGrants is what a node's engine publishes to keep its node's key of the packages bucket: the key alone,
+// and its read.
+func EnginePackagesGrants(node string) []string {
+	return append([]string{"$KV." + EnginePackagesBucket + "." + node}, readGrants(EnginePackagesBucket, node)...)
+}
+
+// engineGrants is what a node's engine is granted to hold its node seat and to ask the operator (ADR 0563 §1, §3): it
+// answers its own node's verbs (the caller-named subjects are added beside them with every principal's), says the
+// seat's events about its node, answers discovery for the seat, asks who answers what (the login shell's execute, ADR
+// 0563 §6), and asks the operator under asks.EngineAsker(node) on the router's seat as its holder declares it, as any
+// user of that seat is granted.
+//
+// Its verbs and events are granted as any verb and any event of the seat on its own node, not as the contract's list:
+// the list is compiled into whichever mesh-sdk the grants part pins, so a verb the engine gained before the grants part
+// was released was refused on every node and the engine reopened its link every few minutes (2026-10-31, the optional
+// verb composition of mesh-host #184). As a module answers `mesh.mod.<module>.tool.>`, nothing is given away: no other
+// principal may subscribe this seat's subjects of this node, and a caller is still granted each verb by name.
+func engineGrants(p Principal) (pub, sub []string) {
+	sub = append(sub, "mesh.seat."+EngineSeat+".tool.*."+p.Node)
+	pub = append(pub, "mesh.seat."+EngineSeat+".event.*."+p.Node)
+	sub = append(sub, announcing(EngineSeat)...)
+	pub = append(pub, discovering()...)
+	tp, ts := seatTrafficGrants(SeatTrafficOf(asks.EngineAsker(p.Node), nil, p.Uses, nil))
+	// And its acts and asks, under its own node's keys alone; never the bucket's creation, which is the grants part's.
+	if own, err := NodeKeysGrants(EngineActsBucket, p.Node); err == nil {
+		pub = append(pub, own...)
+	}
+	// And the provisions its node's modules consume, its own node's keys alone, read (novox/hq ADR 0570 clause 6: the
+	// consuming engine checks the vault's name and generation of what it is handed).
+	if safeSubject.MatchString(p.Node) {
+		pub = append(pub, readGrants(provisions.ProvisionsBucket, p.Node+".>")...)
+	}
+	// And its node's own health report, its key `<node>` alone (issue 774, the operator's alert table): what the watchman
+	// reads for the machine's alerts.
+	if safeSubject.MatchString(p.Node) {
+		pub = append(pub, append([]string{"$KV." + delivery.NodeHealthBucket + "." + p.Node},
+			readGrants(delivery.NodeHealthBucket, p.Node)...)...)
+	}
+	// And its node's placed modules' data items, its own node's keys alone (ADR 0577 clause 1).
+	if own, err := NodeKeysGrants(EngineDataBucket, p.Node); err == nil {
+		pub = append(pub, own...)
+	}
+	// And its node's declared packages, its own key alone (ADR 0565 clause 6); and, read, the controller's mirror's key
+	// of its node, which the node seat's verb packages compares it with until the lease write ends the mirror.
+	if safeSubject.MatchString(p.Node) {
+		pub = append(pub, EnginePackagesGrants(p.Node)...)
+		pub = append(pub, readGrants(DeclaredPackagesBucket, p.Node)...)
+	}
+	return append(pub, tp...), append(sub, ts...)
+}

go/buscompose/health_grants.go

@@ -0,0 +1,189 @@
+package buscompose
+
+import (
+	"fmt"
+	"slices"
+	"sort"
+	"strings"
+
+	"git.novox.be/novox/mesh-sdk/go/catalogue"
+	"git.novox.be/novox/mesh-sdk/go/health"
+)
+
+// **The health holders' grants** (novox/hq ADR 0564 clauses 2, 5 and 8, Limits 2, 4 and 8; issue 1952 S5).
+//
+//   - The condition keeper reads the controller's open conditions until the lease write, for what clauses 8 and 9 carry
+//     from them, and mesh-healers the controller's hand-act log, for S15 (Limits 2): both buckets the controller
+//     announces readable by nobody, so each is read by its named reader alone. The keeper, mesh-healers and the
+//     watchman read the controller's lease (Limits 8). Nobody reads mesh-healers' `would` (clause 8): what the healers
+//     would have done reaches no condition. Every observer's `findings`, the healers' `attempts`, the wants and the
+//     haves are read through `reads` as any announced state is; and no module writes another's state, so an observer
+//     can never write the keeper's buckets (clause 2).
+//   - The watchman makes its own consumer on DEAD_LETTER_NOTICES, by its own name, pulled, and reads whether the
+//     controller's consumer `controller` still stands; it may neither delete nor change that consumer (clause 5). It
+//     lists and shows DEAD_LETTERS, which is all it does before the lease write.
+//   - The bus module's tools run on an account of their own, declared by their bundle's `bus` with `removes`
+//     (catalogue.BusAccounts), which may remove only the consumer `controller` on DEAD_LETTER_NOTICES and keys of the
+//     node-engine's acts bucket (Limits 4), never the backup's account `broker`, which only reads (ADR 0235).
+
+// The states the composer names its readers for, beside the lease (NamedReaders).
+var (
+	// ControllerConditions is the controller's open conditions, read by the keeper alone (ADR 0564 clauses 8, 9).
+	ControllerConditions = ControllerSeat + ".conditions"
+	// ControllerHandActs is the controller's hand-act log, read by mesh-healers alone of the four health holders (ADR
+	// 0564 Limits 2).
+	ControllerHandActs = ControllerSeat + ".hand-acts"
+	// HealersWould is what mesh-healers would have done while the lease names a controller: read by nobody (clause 8).
+	HealersWould = health.HealersModule + "." + health.WouldState
+)
+
+// BusRemovalGrants are the whole authority of an account whose bus declares removals (ADR 0564 Limits 4, issue 1952
+// notes 6 and 7), each removal its grant: the controller's consumer on DEAD_LETTER_NOTICES read and deleted (the lease
+// write's step, clause 5); the node-engine's acts bucket read (STREAM.INFO with a subject filter lists what a removal
+// would take, so the tools read before they remove) and its keys removed, which nothing else may empty when it fills; the ASSIGNMENTS stream read and deleted whole (the lease
+// write, research 072 row 33). A
+// removal outside the set is refused, as the indexer's judge refuses it in a manifest (novox/hq ADR 0578 §1).
+func BusRemovalGrants(removes []string) ([]string, error) {
+	var out []string
+	for _, r := range removes {
+		switch r {
+		case catalogue.RemovesControllerDeadLetterConsumer:
+			out = append(out, "$JS.API.CONSUMER.INFO."+DeadLetterNoticesStream+"."+ControllerName,
+				"$JS.API.CONSUMER.DELETE."+DeadLetterNoticesStream+"."+ControllerName)
+		case catalogue.RemovesEngineActs:
+			out = append(out, "$JS.API.STREAM.INFO.KV_"+EngineActsBucket, "$KV."+EngineActsBucket+".>")
+		case catalogue.RemovesAssignmentsStream:
+			out = append(out, "$JS.API.STREAM.INFO."+AssignmentsStream, "$JS.API.STREAM.DELETE."+AssignmentsStream)
+		default:
+			return nil, fmt.Errorf("a bus account removes %q, which is not one of %s (novox/hq ADR 0564 Limits 4)", r,
+				strings.Join([]string{catalogue.RemovesControllerDeadLetterConsumer, catalogue.RemovesEngineActs,
+					catalogue.RemovesAssignmentsStream}, ", "))
+		}
+	}
+	return out, nil
+}
+
+// removesAssignmentsStream is an account declared to remove the stream ASSIGNMENTS: the writers table's one exemption from
+// stream definitions being the controller's, for deleting that one stream at the lease write (research 072 row 33).
+func removesAssignmentsStream(p Principal, pattern string) bool {
+	return p.Kind == KindProcess && slices.Contains(p.Removes, catalogue.RemovesAssignmentsStream) &&
+		pattern == "$JS.API.STREAM.DELETE."+AssignmentsStream
+}
+
+// removesEngineActs is an account declared to remove keys of the node-engine's acts bucket: the writers table's one
+// exemption from a node's engine being the only writer of its keys, for removal (ADR 0564 Limits 4).
+func removesEngineActs(p Principal, pattern string) bool {
+	return p.Kind == KindProcess && slices.Contains(p.Removes, catalogue.RemovesEngineActs) && pattern == "$KV."+EngineActsBucket+".>"
+}
+
+// WatchmanDeadLetterConsumer is the watchman's own consumer on DEAD_LETTER_NOTICES, made only once the lease names no
+// controller and `controller` is gone (ADR 0564 clause 5).
+const WatchmanDeadLetterConsumer = WatchmanModule
+
+// WatchmanDeadLetterGrants are what the watchman may publish for the dead letters in L4 (ADR 0564 clause 5), at least
+// privilege: its own pulled consumer on DEAD_LETTER_NOTICES (made, read, pulled, acknowledged); whether `controller`
+// still stands (read only); a read of DEAD_LETTERS (its information and one kept message); a copy kept
+// (`mesh.events.dead.>`); and on each stream a notice can name (sources: EVENTS, the seats' work queues and the
+// modules' own), its information, for a source's age (ADR 0376), and the message given up on, each stream by its name.
+// Never a wildcard over the streams and never a bucket's or an object store's stream: a read of any message would read
+// every bucket (the lead, 2026-10-29, on issue 1952 S5). Delivering again and dropping stay refused in L4, so it may
+// neither delete a message nor publish `mesh.again.>`.
+func WatchmanDeadLetterGrants(sources []string) []string {
+	own := DeadLetterNoticesStream + "." + WatchmanDeadLetterConsumer
+	out := []string{
+		"$JS.API.STREAM.INFO." + DeadLetterNoticesStream,
+		"$JS.API.CONSUMER.INFO." + DeadLetterNoticesStream + "." + ControllerName,
+		"$JS.API.CONSUMER.CREATE." + own,
+		"$JS.API.CONSUMER.INFO." + own,
+		"$JS.API.CONSUMER.MSG.NEXT." + own,
+		"$JS.ACK." + own + ".>",
+		"$JS.API.STREAM.INFO." + DeadLettersStream,
+		"$JS.API.STREAM.MSG.GET." + DeadLettersStream,
+		deadLetterPrefix + ">",
+		// And the provisioner clients' reports, the newest per subject read at its start (S21, ADR 0362 §3).
+		"$JS.API.STREAM.INFO." + ProvAppliedStream,
+		"$JS.API.STREAM.MSG.GET." + ProvAppliedStream,
+		"$JS.API.DIRECT.GET." + ProvAppliedStream + ".>",
+	}
+	for _, s := range DeadLetterSources(sources) {
+		out = append(out, "$JS.API.STREAM.INFO."+s, "$JS.API.STREAM.MSG.GET."+s)
+	}
+	return out
+}
+
+// WatchmanHears are the core subjects the watchman subscribes, with no durable consumer (ADR 0564 clauses 4, 5 and
+// Limits 3, 11): the power seat's words (S1, ADR 0211), the providers' failing and recovered words (S8), each tool
+// runner's beat (S11), the self-check's checked (S10), a consumer deleted and the bus module's slow consumers and closed
+// connections (S9), the provisioner clients' reports (S21), the dead letters kept, and the lease write's events. Never the bus's API audit
+// (`$JS.EVENT.ADVISORY.API`): it carries every API call's request and answer in the account, the vault's hashes among
+// them (the lead, 2026-10-29).
+func WatchmanHears() []string {
+	return []string{
+		"mesh.mod.power.event.*",
+		"mesh.mod.*.event.provisioner.failing",
+		"mesh.mod.*.event.provisioner.recovered",
+		"mesh.control.*.tools-alive",
+		"mesh.seat.mesh-self-check.event." + health.EventChecked,
+		"$JS.EVENT.ADVISORY.CONSUMER.DELETED.>",
+		"mesh.mod.nats.event.bus.slow-consumer",
+		"mesh.mod.nats.event.bus.connection-closed",
+		ProvAppliedSubjects,
+		deadLetterPrefix + ">",
+		// And the lease write's (ADR 0582 clauses 4, 6; issue 774): the seat mesh-grants' three events, and the stream
+		// ASSIGNMENTS deleted, which with the controller's consumer deleted clears a removal that failed.
+		"mesh.seat." + catalogue.GrantsSeat + ".event." + catalogue.GrantsEventLeaseHanded,
+		"mesh.seat." + catalogue.GrantsSeat + ".event." + catalogue.GrantsEventLeaseAltered,
+		"mesh.seat." + catalogue.GrantsSeat + ".event." + catalogue.GrantsEventRemovalFailed,
+		"$JS.EVENT.ADVISORY.STREAM.DELETED." + AssignmentsStream,
+	}
+}
+
+// DeadLetterSources are the streams of names a dead letter may come from, sorted, none twice: each a plain name, never a
+// bucket's (KV_) or an object store's (OBJ_) stream, the dead letters' own two streams, or a pattern.
+func DeadLetterSources(names []string) []string {
+	seen := map[string]bool{}
+	var out []string
+	for _, n := range names {
+		switch {
+		case seen[n], !safeSubject.MatchString(n), strings.HasPrefix(n, "KV_"), strings.HasPrefix(n, "OBJ_"),
+			n == DeadLettersStream, n == DeadLetterNoticesStream:
+			continue
+		}
+		seen[n] = true
+		out = append(out, n)
+	}
+	sort.Strings(out)
+	return out
+}
+
+// deadLetterSourcesOf are the streams the records' consumers give up on: EVENTS, the work queue of every seat that
+// accepts work, and every module's and process's own work queue.
+func deadLetterSourcesOf(r Records) []string {
+	out := []string{EventsStream}
+	for _, mods := range r.Assigned {
+		for _, d := range mods {
+			for _, s := range append(append([]Seat(nil), d.Holds...), d.Uses...) {
+				if len(s.Accepts) > 0 {
+					out = append(out, seatStreamName(s.Name))
+				}
+			}
+			for _, q := range d.Queues {
+				out = append(out, q.Stream)
+			}
+			for _, pr := range d.Processes {
+				for _, q := range pr.Queues {
+					out = append(out, q.Stream)
+				}
+			}
+		}
+	}
+	return DeadLetterSources(out)
+}
+
+// keepsDeadLetters is the watchman keeping the dead letters: a second writer of the copies beside the controller, which
+// keeps them until its lease is handed away and the watchman after (ADR 0564 clause 5). Delivering again stays the
+// controller's in L4.
+func keepsDeadLetters(p Principal, pattern string) bool {
+	return isController(p, pattern) ||
+		(p.Kind == KindModule && p.Module == WatchmanModule && pattern == deadLetterPrefix+">")
+}

go/buscompose/lease_cut.go

@@ -0,0 +1,41 @@
+package buscompose
+
+import "slices"
+
+// **The lease write's grants** (novox/hq ADR 0582 clause 3, issue 774). Composed with Records.LeaseCut, the list takes
+// from the controller its write of the lease's key and every update, purge and delete of the lease's bucket, and gives
+// the grants part the key `holder`, which it creates naming itself and deletes at a hand-back (clause 5). Whatever the
+// records, the bus module's tools account may read and update the lease's bucket, for the tool that removes and
+// restores its expiry; no other bucket's.
+
+// leaseStream is the lease bucket's stream.
+var leaseStream = "KV_" + LeaseBucket
+
+// LeaseHolderWrite is the grants part's write of the lease's one key, from the cut.
+func LeaseHolderWrite() string { return "$KV." + LeaseBucket + "." + leaseKey }
+
+// LeaseCutDenied are the controller's subjects of the lease's bucket that its `$JS.API.>` reaches and the cut refuses:
+// the bucket's update (its expiry), purge and delete, and a message's delete (the key's last value).
+func LeaseCutDenied() []string {
+	return []string{"$JS.API.STREAM.UPDATE." + leaseStream, "$JS.API.STREAM.PURGE." + leaseStream,
+		"$JS.API.STREAM.DELETE." + leaseStream, "$JS.API.STREAM.MSG.DELETE." + leaseStream}
+}
+
+// LeaseExpiryGrants are the bus module's tools account's read and update of the lease's bucket, for its expiry.
+func LeaseExpiryGrants() []string {
+	return []string{"$JS.API.STREAM.INFO." + leaseStream, "$JS.API.STREAM.UPDATE." + leaseStream}
+}
+
+// writesTheLease is the controller holding the lease, or, from the cut, the grants part writing its key holder alone.
+func writesTheLease(p Principal, pattern string) bool {
+	if p.Kind == KindController {
+		return true
+	}
+	return p.Kind == KindModule && p.Module == GrantsModule && p.LeaseCut && pattern == LeaseHolderWrite()
+}
+
+// setsLeaseExpiry is the bus module's tools account updating the lease's bucket: the writers table's one exemption from
+// stream definitions being the controller's beside ASSIGNMENTS' removal (ADR 0582 clause 3).
+func setsLeaseExpiry(p Principal, pattern string) bool {
+	return p.Kind == KindProcess && len(p.Removes) > 0 && slices.Contains(LeaseExpiryGrants(), pattern)
+}

go/buscompose/log.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"sort"
 	"strings"
+	"time"
 
 	"github.com/nats-io/nats.go/jetstream"
 )
@@ -14,8 +15,10 @@ import (
 // A log follows a bucket in every respect (ADR 0201): the module names it locally, the mesh derives
 // its stream and subjects, the controller creates it from the catalogue on every raise and from
 // registration, never a module, and **no path of the mesh removes one** — a log whose declaration
-// is gone is reported, as a bucket is. Unlike a bucket, a log is its owner's alone: no other module
-// reads it, so there is no read of a log to grant or issue.
+// is gone is reported, as a bucket is. Only its owner appends to it. Another module reads it when its manifest's
+// `reads` names it, `<module>.<log>` (novox/hq ADR 0571 clause 1; the lead, 2026-10-29): by direct gets, and through an
+// ordered consumer of its own it creates and lets go of to read from a time or the newest per key and then follow new
+// entries; never a durable consumer, never a write.
 //
 // Pure, but for the stream's configuration, which is the server's own type so that what is tested
 // is exactly what is sent; jetstream.go is the part that asks a server.
@@ -37,6 +40,8 @@ type Log struct {
 	Name   string
 	// MaxMiB is its cap in MiB; zero is LogDefaultMiB.
 	MaxMiB int
+	// MaxAgeDays is how long an entry is kept; zero is as long as the log (catalogue.LogDeclaration).
+	MaxAgeDays int
 }
 
 // LogStreamPrefix starts every log's stream name, which no other stream of the mesh's starts with.
@@ -74,7 +79,7 @@ func (l Log) Why() string {
 }
 
 // Config is the stream a log is, field by field as novox/hq ADR 0297 fixes it: a file stream kept by
-// limits, with no maximum age and no cap per key, whose message is an entry's value and 4 KiB of
+// limits, with no maximum age unless the log says one (ADR 0565 §10) and no cap per key, whose message is an entry's value and 4 KiB of
 // headers at most, that refuses a new entry when full rather than
 // drop an old one, and that refuses deleting an entry or purging it. Direct gets are allowed, which
 // is how the runtime reads it.
@@ -85,7 +90,7 @@ func (l Log) Config() jetstream.StreamConfig {
 		Subjects:          []string{l.Subject() + ".>"},
 		Storage:           jetstream.FileStorage,
 		Retention:         jetstream.LimitsPolicy,
-		MaxAge:            0,
+		MaxAge:            time.Duration(l.MaxAgeDays) * 24 * time.Hour,
 		MaxMsgs:           -1,
 		MaxMsgsPerSubject: -1,
 		MaxBytes:          l.MaxBytes(),
@@ -135,6 +140,59 @@ func logGrants(module string, names []string) []string {
 	return out
 }
 
+// DeclaredLogs is every log a module placed anywhere declares, as a read names it: `<module>.<log>`.
+func DeclaredLogs(r Records) map[string]bool {
+	out := map[string]bool{}
+	for _, ds := range r.Assigned {
+		for _, d := range ds {
+			for _, l := range d.Logs {
+				out[d.Module+"."+l.Name] = true
+			}
+		}
+	}
+	return out
+}
+
+// withReadLogs is d with ReadLogs set: of its reads, those naming a log of logs.
+func withReadLogs(d Declared, logs map[string]bool) Declared {
+	d.ReadLogs = nil
+	for _, r := range d.Reads {
+		if logs[strings.TrimSpace(r)] {
+			d.ReadLogs = append(d.ReadLogs, strings.TrimSpace(r))
+		}
+	}
+	return d
+}
+
+// readLogGrants is what a reader of other modules' logs publishes, for each `<module>.<log>` read: the stream's info,
+// direct gets (an entry by sequence, the last of a key), and an ordered consumer of its own (created with any name and
+// filter, pulled, read and deleted). No append, no purge, no delete of an entry: the log's stream refuses those anyway.
+func readLogGrants(reads []string) []string {
+	var out []string
+	for _, r := range reads {
+		module, name, ok := strings.Cut(r, ".")
+		if !ok || !safeSubject.MatchString(module) || !safeSubject.MatchString(name) {
+			continue
+		}
+		stream := LogStreamName(module, name)
+		out = append(out, "$JS.API.STREAM.INFO."+stream, "$JS.API.DIRECT.GET."+stream, "$JS.API.DIRECT.GET."+stream+".>",
+			"$JS.API.CONSUMER.CREATE."+stream+".>", "$JS.API.CONSUMER.MSG.NEXT."+stream+".*",
+			"$JS.API.CONSUMER.INFO."+stream+".*", "$JS.API.CONSUMER.DELETE."+stream+".*")
+	}
+	return out
+}
+
+// readLogsIssuedFor is every other module's log a module's code reads, as its membership lists them: by the read's
+// name, never written.
+func readLogsIssuedFor(d Declared) []LogIssued {
+	var out []LogIssued
+	for _, r := range d.ReadLogs {
+		module, name, _ := strings.Cut(r, ".")
+		out = append(out, LogIssued{Name: r, Stream: LogStreamName(module, name), Subject: LogSubject(module, name)})
+	}
+	return out
+}
+
 // logNames is the local names of a module's logs.
 func logNames(logs []Log) []string {
 	out := make([]string, 0, len(logs))

go/buscompose/membership.go

@@ -24,6 +24,9 @@ type Placements struct {
 	Interchangeable map[string]bool
 	// Kinds is every kind held of a kinded bench, by whom and with what capabilities (ADR 0259 §5).
 	Kinds []KindHeld
+	// Logs is every log a module placed anywhere declares, `<module>.<log>` (DeclaredLogs): a read naming one is issued
+	// as a log read (novox/hq ADR 0571 clause 1).
+	Logs map[string]bool
 }
 
 // AnswersForTheModule says whether an instance of a module on one machine is issued the module's
@@ -58,7 +61,7 @@ func MembershipFor(node string, d Declared, where Placements) Membership {
 		}
 	}
 	m.State = stateIssuedFor(d, node)
-	m.Logs = logsIssuedFor(d)
+	m.Logs = append(logsIssuedFor(d), readLogsIssuedFor(withReadLogs(d, where.Logs))...)
 	m.Streams = streamsIssuedFor(d)
 	m.Hears = HeardIssuedFor(node, d)
 	m.Waits = waitsIssuedFor(d)
@@ -103,7 +106,7 @@ func MembershipFor(node string, d Declared, where Placements) Membership {
 
 // PlacementsOf reads where everything runs from the records the bus's accounts are composed from.
 func PlacementsOf(r Records, interchangeable map[string]bool) Placements {
-	p := Placements{Nodes: map[string][]string{}, Interchangeable: interchangeable}
+	p := Placements{Nodes: map[string][]string{}, Interchangeable: interchangeable, Logs: DeclaredLogs(r)}
 	for node, declared := range r.Assigned {
 		for _, d := range declared {
 			p.Nodes[d.Module] = append(p.Nodes[d.Module], node)

go/buscompose/modstreams.go

@@ -108,7 +108,7 @@ func (s ModuleStream) Stream() Stream {
 
 // QueueOwner is the one process of a module that is the durable consumer of one of its own work-queue
 // streams (novox/hq ADR 0436 §1, §2, §6): named in that process's bus.queues, and checked at registration
-// to be the only one (catalogue.WorkQueueStreamProblems).
+// to be the only one (the indexer's judge, novox/hq ADR 0578 §1).
 type QueueOwner struct {
 	// Process is the process resource's id — its bus account's name, with the node and module (novox/hq ADR
 	// 0436 §2).

go/buscompose/nats.go

@@ -22,6 +22,7 @@ import (
 	"strings"
 	"time"
 
+	"git.novox.be/novox/mesh-sdk/go/catalogue"
 	"git.novox.be/novox/mesh-sdk/go/delivery"
 )
 
@@ -181,6 +182,8 @@ type Principal struct {
 	KeyedReads []KeyedRead
 	// Logs is the local names of the logs this principal's module keeps (novox/hq ADR 0297).
 	Logs []string
+	// ReadLogs are, of Reads, those naming another module's log (novox/hq ADR 0571 clause 1).
+	ReadLogs []string
 	// Streams are the streams this principal's module owns, and Hears the module streams it hears with the
 	// subjects it was granted (novox/hq ADR 0363).
 	Streams []ModuleStream
@@ -196,6 +199,15 @@ type Principal struct {
 	// whole authority is BusSnapshotGrants: it copies the streams for the night's backup and nothing
 	// else — not its declarations, which the node's tool runtime serves for it.
 	SnapshotsTheBus bool
+	// Removes are, for a process or tools bundle account whose bus declares them, what it may remove from the bus
+	// (novox/hq ADR 0564 Limits 4): its whole authority is then BusRemovalGrants of them.
+	Removes []string
+	// LeaseCut is Records.LeaseCut on the controller and the grants part (novox/hq ADR 0582 clause 3): the controller
+	// loses its write of the lease, and the grants part may write the key `holder`.
+	LeaseCut bool
+	// DeadLetterSources are, for the watchman, the streams a dead letter it keeps may come from, by name
+	// (deadLetterSourcesOf, novox/hq ADR 0564 clause 5): never a bucket's.
+	DeadLetterSources []string
 
 	// WitnessesController is a machine principal whose node-engine witnesses the controller's upgrades:
 	// the machine runs the controller (novox/hq ADR 0236, lease/witness.go). It may read the lease's one
@@ -217,6 +229,15 @@ type Principal struct {
 	// ADR 0547 §2, ADR 0550 §5, issue 1126): its modules' own secrets sealed to its key, for the compositions it makes
 	// itself. Set while the vault's holder serves it.
 	AsksItsOwnSecrets bool
+	// AsksTheVaultToSign is a machine principal whose node-engine may ask the vault's `sign` in its own name, read the
+	// vault's public signing halves (`signers`) and the controller's lease key (novox/hq ADR 0550 §2): its own node's
+	// certificate, the keys it trusts, and the lease write that drops the controller's key. Set while the vault's holder
+	// serves `sign`.
+	AsksTheVaultToSign bool
+	// ServedReads are, for a machine principal, the keys of mesh-config's resolved values that other nodes' modules serve
+	// from (`<node>.<module>.<key>`, catalogue.ServedSettings): what every consumer is told, and so what a node composing
+	// its own modules reads of a provider elsewhere (issue 1126), each key alone. Sorted, none twice.
+	ServedReads []string
 	// FollowsGrantsUserList is the machine principal of the node holding mesh-broker: its node-engine reads the grants
 	// part's sealed user list, one key and an object by name (novox/hq ADR 0547 clause 7, GrantsUserListFollows).
 	FollowsGrantsUserList bool
@@ -228,6 +249,30 @@ type Principal struct {
 	// by name. Created only, never updated or deleted: a new module state is on the bus when the grants part hears its
 	// manifest, not at the controller's next start (issue 1790).
 	CreatesStreams []string
+	// CreatesConsumers are the durable consumers the grants part's principal alone may create beside the controller
+	// (novox/hq ADR 0561 §6): each placed module's on EVENTS and each process's on its work queue (AccountConsumers), by
+	// stream and name. Created only, never updated or deleted.
+	CreatesConsumers []ModuleConsumer
+
+	// Login is a node principal's login when it is not `node.<n>`: its second login, `node.<n>--b`, composed beside or
+	// in place of the first as the vault's node-logins says (novox/hq ADR 0583 §1, issue 774). Each login is granted
+	// the node's permissions and the node's inbox `_INBOX.node.<n>`; what it calls, it calls in its own name, so the
+	// vault tells the login that confirms a rotation from the one it replaces (§3).
+	Login string
+	// RotatesItsLogin is a machine principal whose node-engine reads its own node's key of the vault's node-logins,
+	// and no other key, and confirms a switch with node-account-confirm in its own name (novox/hq ADR 0583 §1 insight,
+	// §3). Set while the vault's holder serves rotate-node.
+	RotatesItsLogin bool
+
+	// Redeems is an enrolment principal that may call the seat mesh-enrolment's redeem in its own name, and nothing else
+	// of it (novox/hq ADR 0587 §4): set while the seat's holder serves redeem. LeaseHandedAway drops the controller's
+	// enrolment subject from it, which is served no more from the lease write (§6).
+	Redeems         bool
+	LeaseHandedAway bool
+
+	// VaultEnrols says the vault's holder serves an enrolment verb (VerbsTheEnrolmentAsksTheVault): every principal but
+	// the module mesh-enrolment and its processes is then denied them, however wide its grant (ADR 0587 §1).
+	VaultEnrols bool
 
 	// PasswordHash is the bcrypt hash the mesh minted. The plaintext is sealed to the principal
 	// and never appears here: this file is written to a node's disk and read by a server, and a
@@ -279,6 +324,22 @@ func ControllerOnly() []string {
 	return out
 }
 
+// VerbsTheEnrolmentAsksTheVault are the vault's verbs the seat mesh-enrolment's holder alone calls (novox/hq ADR 0587
+// §1, §3; ADR 0561 §5): a token and its hash made and dropped, a joining node's account minted and retired.
+var VerbsTheEnrolmentAsksTheVault = []SeatVerb{{Seat: VaultSeat, Verb: delivery.EnrolmentTokenVerb},
+	{Seat: VaultSeat, Verb: delivery.NodeAccountVerb}}
+
+// EnrolmentOnly are the subjects the holder of mesh-enrolment alone may publish, however wide another's grant: the
+// vault's two enrolment verbs, by the tool's and the caller-named shape (Principal.VaultEnrols denies them).
+func EnrolmentOnly() []string {
+	var out []string
+	for _, v := range VerbsTheEnrolmentAsksTheVault {
+		out = append(out, "mesh.seat."+v.Seat+".tool."+v.Verb, "mesh.seat."+v.Seat+".tool."+v.Verb+".>",
+			"mesh.seat."+v.Seat+"."+CallKind+"."+v.Verb+".>")
+	}
+	return out
+}
+
 // MayPublish says whether permissions let a principal publish one subject: an allow covers it and no deny does.
 func MayPublish(perms Permissions, subject string) bool {
 	for _, d := range perms.PublishDeny {
@@ -352,6 +413,37 @@ var VaultNodeKey = SeatVerb{Seat: "mesh-vault", Verb: "node-key"}
 // key (issue 1126, ADR 0550 §5); granted as Principal.AsksItsOwnSecrets says.
 var VaultOwn = SeatVerb{Seat: "mesh-vault", Verb: "own"}
 
+// VaultSign is the vault's verb a machine's node-engine asks in its own name for its own node's certificate (novox/hq
+// ADR 0550 §2); granted as Principal.AsksTheVaultToSign says.
+var VaultSign = SeatVerb{Seat: "mesh-vault", Verb: delivery.SignVerb}
+
+// VaultRotateNode is the vault's verb that begins a node's account rotation; while its holder serves it, every node
+// principal reads its own node's key of node-logins (novox/hq ADR 0583 §1, §2). VaultNodeAccountConfirm is the verb a
+// node-engine confirms a switch with, in its new login's name (§3).
+var (
+	VaultRotateNode         = SeatVerb{Seat: "mesh-vault", Verb: delivery.RotateNodeVerb}
+	VaultNodeAccountConfirm = SeatVerb{Seat: "mesh-vault", Verb: delivery.NodeAccountConfirmVerb}
+)
+
+// EnrolmentRedeem is the seat mesh-enrolment's verb a joining node-engine calls as enrol.<node> (novox/hq ADR 0587 §4,
+// §6).
+var EnrolmentRedeem = SeatVerb{Seat: catalogue.EnrolmentSeat, Verb: catalogue.EnrolmentVerbRedeem}
+
+// EnrolmentRedeemCall is the one subject an enrolment user may publish once it enrols through the seat: redeem, in its
+// own name.
+func EnrolmentRedeemCall(p Principal) string {
+	return "mesh.seat." + EnrolmentRedeem.Seat + "." + CallKind + "." + EnrolmentRedeem.Verb + "." + CallerToken(p.Username())
+}
+
+// NodeLoginsReads is what a node's engine is granted of the vault's node-logins: its own node's key, read and watched,
+// and no other (novox/hq ADR 0583 §1 insight).
+func NodeLoginsReads(node string) []string {
+	if !safeSubject.MatchString(node) {
+		return nil
+	}
+	return readGrants(delivery.NodeLoginsBucket, node)
+}
+
 // VerbsTheControllerActsOnAWarrant are the other seat verbs the controller calls when the operator's warrant
 // chooses them (novox/hq ADR 0259): a machine's service restarted, and a walk started or stopped through the
 // controller's own `plans`, a machine's held builds sent by its own `push` and the builds held after a failed release
@@ -500,6 +592,9 @@ func (p Principal) Username() string {
 		// never the module's own name alone, which is a different account with a different secret.
 		return p.Node + "." + p.Module + "." + p.Process
 	case KindNode:
+		if p.Login != "" {
+			return p.Login
+		}
 		return "node." + p.Node
 	case KindController:
 		return "controller"
@@ -559,7 +654,14 @@ func AskAccessActSubject(node string) string { return "mesh.node." + node + ".as
 // inbox is a principal's own reply space. No user is ever granted a bare `_INBOX.>` (design 25
 // §4): with one account, inbox privacy is the permission list or it is nothing, so each user's
 // inbox is derived from its own identity and its permissions name that prefix and no other.
-func (p Principal) inbox() string { return "_INBOX." + p.Username() + ".>" }
+//
+// A node's two logins share the node's inbox (novox/hq ADR 0583 §1): its answers reach it whichever login it dials as.
+func (p Principal) inbox() string {
+	if p.Kind == KindNode {
+		return "_INBOX.node." + p.Node + ".>"
+	}
+	return "_INBOX." + p.Username() + ".>"
+}
 
 // Permissions is what a principal may publish and subscribe, and whether it may answer.
 type Permissions struct {
@@ -638,6 +740,22 @@ func PermissionsFor(p Principal) (Permissions, error) {
 		return Permissions{Publish: pub, Subscribe: []string{p.inbox()}}, nil
 	}
 
+	if p.Kind == KindProcess && len(p.Removes) > 0 {
+		pub, err := BusRemovalGrants(p.Removes)
+		if err != nil {
+			return Permissions{}, err
+		}
+		// And the lease's bucket's expiry, read and set, by the bus module's tool the grants part calls at the lease
+		// write and its hand-back (novox/hq ADR 0582 clauses 3, 5): the one bucket whose stream it may update.
+		pub = append(pub, LeaseExpiryGrants()...)
+		sort.Strings(pub)
+		if err := CheckWriters(p, pub); err != nil {
+			return Permissions{}, err
+		}
+		// Its own inbox for the answers, and nothing else (Limits 4).
+		return Permissions{Publish: pub, Subscribe: []string{p.inbox()}}, nil
+	}
+
 	var pub, sub []string
 	switch p.Kind {
 	case KindController:
@@ -763,6 +881,9 @@ func PermissionsFor(p Principal) (Permissions, error) {
 			if bucket == delivery.HaveBucket {
 				continue // each node's node-engine writes its own keys of it, the controller none (ADR 0429 §1)
 			}
+			if bucket == LeaseBucket && p.LeaseCut {
+				continue // the lease write took it (novox/hq ADR 0582 clause 3): a controller started fails on the lease
+			}
 			pub = append(pub, "$KV."+bucket+".>")
 		}
 		// **And the object bucket a declaration's large files travel in** (novox/hq ADR 0486 §2, issue 1697): the
@@ -842,7 +963,20 @@ func PermissionsFor(p Principal) (Permissions, error) {
 					"enrolment: a token is issued for a node record, and that record's name is " +
 					"the token's id")
 		}
-		pub = []string{"mesh.control.enrol"}
+		// **From the lease write a node enrols through the seat mesh-enrolment alone** (novox/hq ADR 0587 §4, §6): its
+		// user calls redeem in its own name, while the seat's holder serves it, and the controller's enrolment subject is
+		// kept only while the controller holds the lease.
+		pub = nil
+		if !p.LeaseHandedAway {
+			pub = append(pub, "mesh.control.enrol")
+		}
+		if p.Redeems {
+			pub = append(pub, EnrolmentRedeemCall(p))
+		}
+		if len(pub) == 0 {
+			return Permissions{}, fmt.Errorf("the enrolment user of %s may enrol nowhere: the lease is handed away and "+
+				"no holder of %s serves %s", p.Node, EnrolmentRedeem.Seat, EnrolmentRedeem.Verb)
+		}
 		sub = []string{p.inbox()}
 
 	case KindNode:
@@ -894,10 +1028,16 @@ func PermissionsFor(p Principal) (Permissions, error) {
 		// its own modules reads the other nodes' public records, which its firewall and resolver need (ADR 0547 §2). Read
 		// only: each node still writes its own keys alone.
 		pub = append(pub, readGrants(delivery.HaveBucket, "*."+delivery.HaveNodeWord)...)
-		// And what it composes its own modules from (ADR 0547 §2, ADR 0549 §3): the indexer's placement, modules and
-		// manifests, the builder's builds (the manifest of a build its want names), and mesh-config's resolved values of
+		// And what it composes its own modules from (ADR 0547 §2, ADR 0567 §9): the seat mesh-placement's placement and
+		// candidates, the indexer's modules and manifests, the builder's builds (the manifest of a build its want names), and mesh-config's resolved values of
 		// its own node alone. Read only.
 		pub = append(pub, NodeComposeReads(p.Node)...)
+		// And, of the other nodes' resolved values, the keys their modules serve from (issue 1126), each one key.
+		served, err := ServedReadGrants(p.ServedReads)
+		if err != nil {
+			return Permissions{}, err
+		}
+		pub = append(pub, served...)
 		// And an object of the declaration bucket by its name, and nothing of the bucket's list or writing
 		// (novox/hq ADR 0486 §2, issue 1697).
 		fileReads, err := DeclarationFilesReads(p.Node)
@@ -921,6 +1061,9 @@ func PermissionsFor(p Principal) (Permissions, error) {
 		// And the backup holder's word that it backed the module up (ADR 0539 clause 16), whichever module holds
 		// node-backup: one event, by its name.
 		sub = append(sub, NodeAgentHears...)
+		// And the creation of the seat mesh-placement's two states it composes from (ADR 0567 §9), so a node agent started
+		// before they exist binds each when the bus says it was made, with no timer; no other bucket's.
+		sub = append(sub, NodeComposeAdvisories()...)
 		// And, while the vault serves it, the vault's move-in in its own name and nobody else's (issue 676): the
 		// values sealed to this machine, which only it opens, handed in sealed to the vault's key for the call.
 		if p.MovesIntoTheVault {
@@ -939,6 +1082,25 @@ func PermissionsFor(p Principal) (Permissions, error) {
 			// on it rather than at the next unrelated change (ADR 0547 §2).
 			sub = append(sub, VaultSecretChanged)
 		}
+		// And, while the vault serves `sign`, its own node's certificate in its own name, the vault's public signing
+		// halves, read and watched, and the controller's lease key, read and watched, which says when the controller's key
+		// is no longer trusted (ADR 0550 §2). Read only.
+		if p.AsksTheVaultToSign {
+			pub = append(pub, VaultSignCall(p))
+			pub = append(pub, readGrants(delivery.SignersBucket, "")...)
+			pub = append(pub, readGrants(LeaseBucket, leaseKey)...)
+		}
+		// And, while the vault rotates node accounts, its own node's key of node-logins, read and watched, and no other
+		// key (novox/hq ADR 0583 §1 insight): the login it dials as; and the confirmation of a switch in its own name (§3).
+		if p.RotatesItsLogin {
+			pub = append(pub, NodeLoginsReads(p.Node)...)
+			pub = append(pub, "mesh.seat."+VaultNodeAccountConfirm.Seat+"."+CallKind+"."+VaultNodeAccountConfirm.Verb+"."+
+				CallerToken(p.Username()))
+		}
+		// And its node seat, node-engine, and its asks to the operator in its own name (novox/hq ADR 0563 §1, §3).
+		ep, es := engineGrants(p)
+		pub = append(pub, ep...)
+		sub = append(sub, es...)
 		// And, on the node holding mesh-broker, the grants part's sealed user list it follows from take-over (novox/hq ADR
 		// 0547 clause 7): one key, and an object by its name.
 		if p.FollowsGrantsUserList {
@@ -950,6 +1112,10 @@ func PermissionsFor(p Principal) (Permissions, error) {
 		if p.Module == WatchmanModule {
 			sub = append(sub, BusConnectSubject, BusDisconnectSubject)
 			pub = append(pub, BusConnzSubject)
+			// And the dead letters, from its own consumer, never the controller's (novox/hq ADR 0564 clause 5).
+			pub = append(pub, WatchmanDeadLetterGrants(p.DeadLetterSources)...)
+			// And the words its watchdogs hear (ADR 0564 clause 4, Limits 3, 11).
+			sub = append(sub, WatchmanHears()...)
 		}
 		// The grants part alone publishes the modules' memberships into the assignments stream (novox/hq ADR 0547 §5;
 		// the operator, 2026-10-25 22:31): one per subject, `mesh.assignment.<node>.<module>`, reading the last one of each
@@ -959,8 +1125,15 @@ func PermissionsFor(p Principal) (Permissions, error) {
 			// And creating each stream a manifest declares, by its own name (the operator, 2026-10-26 08:54; issue
 			// 1790): the create and the read of that one stream, never an update, a delete or a stream not declared.
 			pub = append(pub, CreateStreamGrants(p.CreatesStreams)...)
+			// And creating each durable consumer an account needs, by its stream and name (ADR 0561 §6).
+			pub = append(pub, CreateConsumerGrants(p.CreatesConsumers)...)
 			// And its own object bucket, where it writes the user list sealed to the bus node (ADR 0547 clause 7).
 			pub = append(pub, GrantsUserListWrites()...)
+			// And, from the lease write's cut, the lease's one key, which it creates naming itself and deletes at a
+			// hand-back (novox/hq ADR 0582 clauses 3, 5): never the bucket's other keys or its stream.
+			if p.LeaseCut {
+				pub = append(pub, LeaseHolderWrite())
+			}
 		}
 		// The view alone reads the build seats' workers for the backlog of asks (issue 1887 A8a).
 		if p.Module == ViewModule {
@@ -996,10 +1169,11 @@ func PermissionsFor(p Principal) (Permissions, error) {
 			}
 		}
 		sub = append(sub, announcing(announced...)...)
-		// Its own membership (ADR 0160): the one subject a runtime derives for itself, read
-		// directly from the stream and followed live. Nothing else's.
-		sub = append(sub, MembershipSubject(p.Node, p.Module))
-		pub = append(pub, "$JS.API.DIRECT.GET."+AssignmentsStream+"."+MembershipSubject(p.Node, p.Module))
+		// Its own membership (ADR 0160), from the grants part's state memberships, its own key (novox/hq ADR 0571 clause
+		// 7): its one read of it, since the assignments stream's direct get went with the stream (research 072 row 33),
+		// and no longer heard on its subject, where the grants part stops publishing at the lease write (ADR 0571 clause
+		// 10, issue 774).
+		pub = append(pub, readGrants(GrantsMembershipsBucket, MembershipKey(p.Node, p.Module))...)
 
 		// 1b. The tools it calls, if its manifest says it calls any (novox/hq ADR 0152). The same
 		//     grant a person gets and derived the same way, so "what may this module ask" is
@@ -1117,6 +1291,7 @@ func PermissionsFor(p Principal) (Permissions, error) {
 		sub = append(sub, stateCreatedHeard(kept)...)
 		// And its logs (novox/hq ADR 0297): appended to and read directly, its own alone.
 		pub = append(pub, logGrants(p.Module, p.Logs)...)
+		pub = append(pub, readLogGrants(p.ReadLogs)...)
 
 		// 6. Its traffic on seats that name their caller or their kind, ask proofs or keep records
 		//    (novox/hq ADR 0259 §3).
@@ -1159,11 +1334,11 @@ func PermissionsFor(p Principal) (Permissions, error) {
 				}
 			}
 		}
-		// Every assigned module's membership on this node (ADR 0160): one per module, read
-		// directly from the stream and followed live. This node's and no other's — the one token
-		// that varies is the module, so the pattern is the machine's own assignments.
-		sub = append(sub, "mesh.assignment."+p.Node+".*")
-		pub = append(pub, "$JS.API.DIRECT.GET."+AssignmentsStream+".mesh.assignment."+p.Node+".*")
+		// Every assigned module's membership on this node (ADR 0160): one per module, read and watched from the
+		// grants part's state memberships (ADR 0571 clause 7), and no longer heard on `mesh.assignment`, where the grants
+		// part stops publishing at the lease write (ADR 0571 clause 10, issue 774). This node's and no other's — the
+		// one token that varies is the module, so the pattern is the machine's own assignments.
+		pub = append(pub, readGrants(GrantsMembershipsBucket, p.Node+".*")...)
 		// And that it is there (novox/hq to-be 45 §3, S11): its own heartbeat, under its machine's
 		// name and no other's, on core NATS like the host's.
 		pub = append(pub, "mesh.control."+p.Node+".tools-alive")
@@ -1220,6 +1395,7 @@ func PermissionsFor(p Principal) (Permissions, error) {
 		// runtime's to keep, from the logs each membership lists.
 		for _, d := range p.Carries {
 			pub = append(pub, logGrants(d.Module, logNames(d.Logs))...)
+			pub = append(pub, readLogGrants(d.ReadLogs)...)
 		}
 		// **And the event families a session may wait on** (novox/hq ADR 0367 §2): the tool runner's module's own,
 		// named one by one in its manifest, as a plain subscription — no consumer is made for them, and no
@@ -1340,6 +1516,11 @@ func PermissionsFor(p Principal) (Permissions, error) {
 	}
 	// What the controller alone may publish is denied to everybody else whose grant reaches it.
 	var deny []string
+	// And from the lease write's cut, the lease's bucket to the controller, whose `$JS.API.>` reaches it (novox/hq ADR
+	// 0582 clause 3): a controller started by mistake fails on the lease instead of taking it back.
+	if p.Kind == KindController && p.LeaseCut {
+		deny = append(deny, LeaseCutDenied()...)
+	}
 	if p.Kind != KindController {
 		for _, only := range ControllerOnly() {
 			for _, a := range pub {
@@ -1353,6 +1534,14 @@ func PermissionsFor(p Principal) (Permissions, error) {
 			}
 		}
 	}
+	// And the vault's enrolment verbs to every principal but mesh-enrolment's (novox/hq ADR 0587 §1).
+	if p.VaultEnrols && !((p.Kind == KindModule || p.Kind == KindProcess) && p.Module == delivery.EnrolmentModule) {
+		for _, only := range EnrolmentOnly() {
+			if slices.ContainsFunc(pub, func(a string) bool { return SubjectsOverlap(a, only) }) {
+				deny = append(deny, only)
+			}
+		}
+	}
 	return Permissions{
 		Publish:     pub,
 		PublishDeny: deny,
@@ -1609,17 +1798,7 @@ func ComposeAccounts(principals []Principal) (string, error) {
 		if p.PasswordHash == "" {
 			return "", fmt.Errorf("%s has no password hash: a user without one is a user anybody is", p.Username())
 		}
-		fmt.Fprintf(&b, "      { user: %q, password: %q, permissions: {\n", p.Username(), p.PasswordHash)
-		if len(perms.PublishDeny) > 0 {
-			fmt.Fprintf(&b, "        publish: { allow: [%s], deny: [%s] }\n", quoted(perms.Publish), quoted(perms.PublishDeny))
-		} else {
-			fmt.Fprintf(&b, "        publish: { allow: [%s] }\n", quoted(perms.Publish))
-		}
-		fmt.Fprintf(&b, "        subscribe: { allow: [%s] }\n", quoted(perms.Subscribe))
-		if perms.AllowResponses {
-			fmt.Fprintf(&b, "        allow_responses: { max: 1, ttl: \"%dm\" }\n", int(ResponseTTL/time.Minute))
-		}
-		b.WriteString("      } }\n")
+		b.WriteString(AccountsEntry(p.Username(), p.PasswordHash, perms))
 	}
 	b.WriteString("    ]\n  }\n")
 	b.WriteString(systemAccount)
@@ -1627,6 +1806,25 @@ func ComposeAccounts(principals []Principal) (string, error) {
 	return b.String(), nil
 }
 
+// AccountsEntry is one user of the accounts block, as ComposeAccounts writes each: its name, its password hash and its
+// permissions, in the lines the bus reads. Exported so a writer that keeps a user from grants it holds rather than
+// composes (mesh-grants' refused users) writes the same lines, never a copy of them (issue 774).
+func AccountsEntry(user, passwordHash string, perms Permissions) string {
+	var b strings.Builder
+	fmt.Fprintf(&b, "      { user: %q, password: %q, permissions: {\n", user, passwordHash)
+	if len(perms.PublishDeny) > 0 {
+		fmt.Fprintf(&b, "        publish: { allow: [%s], deny: [%s] }\n", quoted(perms.Publish), quoted(perms.PublishDeny))
+	} else {
+		fmt.Fprintf(&b, "        publish: { allow: [%s] }\n", quoted(perms.Publish))
+	}
+	fmt.Fprintf(&b, "        subscribe: { allow: [%s] }\n", quoted(perms.Subscribe))
+	if perms.AllowResponses {
+		fmt.Fprintf(&b, "        allow_responses: { max: 1, ttl: \"%dm\" }\n", int(ResponseTTL/time.Minute))
+	}
+	b.WriteString("      } }\n")
+	return b.String()
+}
+
 // WatchmanModule is the one module whose principal hears the bus's connect and disconnect events and asks its list of
 // connections (novox/hq ADR 0431 §2, issue 1147): the watchman of the repository mesh-delivery, which writes presence
 // from them. No other principal is granted the subjects below, and nothing is a wildcard over them.
@@ -1646,10 +1844,40 @@ func CreateStreamGrants(streams []string) []string {
 	return out
 }
 
+// CreateConsumerGrants are the subjects that create each consumer by its stream and name, and read its info back: the
+// create of the client library's CreateConsumer for a consumer with no filter or several, never one filter's form (a
+// wildcard in a filter would widen the grant), an update or a delete.
+func CreateConsumerGrants(consumers []ModuleConsumer) []string {
+	var out []string
+	for _, mc := range consumers {
+		c := mc.Consumer
+		if !safeSubject.MatchString(c.Stream) || !safeSubject.MatchString(c.Name) || len(c.Filters) == 1 {
+			continue
+		}
+		out = append(out, "$JS.API.CONSUMER.CREATE."+c.Stream+"."+c.Name, "$JS.API.CONSUMER.INFO."+c.Stream+"."+c.Name)
+	}
+	return out
+}
+
 // GrantsModule is the one module whose principal publishes the modules' memberships (novox/hq ADR 0547 §5): the grants
 // part, which composes them from the manifests and placement. It defines no stream and is granted no other subject here.
 const GrantsModule = "mesh-grants"
 
+// The grants part's state memberships (novox/hq ADR 0571 clause 7): one key per assignment, `<node>.<module>`, its
+// membership (Membership) bare, as the assignments stream carries it, written only when it differs. A module's runtime
+// reads its own key, the tool runner its node's; the grants part alone writes it. Both sides go through
+// membership.EncodeGrantsMembership and membership.DecodeGrantsMembership (or BareGrantsMembership for a reader with a
+// type of its own), never json of a type of their own: the grants part once wrote its wrapper here and every reader
+// served nothing (issue 774). The decoder still reads that wrapper, for the transition.
+const (
+	GrantsMembershipsState  = "memberships"
+	GrantsMembershipsBucket = GrantsModule + "_" + GrantsMembershipsState
+	GrantsMembershipsRead   = GrantsModule + "." + GrantsMembershipsState
+)
+
+// MembershipKey is an assignment's key in the grants part's memberships: `<node>.<module>`.
+func MembershipKey(node, module string) string { return node + "." + module }
+
 // The bus's own events, imported into MESH from the default system account `$SYS` under subjects of MESH's own
 // (novox/hq ADR 0431 §1, issue 1147): the server says an account's connections opening and closing only to the system
 // account, and the list of an account's connections only to a request made there. `$SYS` holds no user, so nobody
@@ -1814,6 +2042,11 @@ func VaultOwnCall(p Principal) string {
 	return "mesh.seat." + VaultOwn.Seat + "." + CallKind + "." + VaultOwn.Verb + "." + CallerToken(p.Username())
 }
 
+// VaultSignCall is the subject a machine principal's node-engine asks the vault's `sign` on, in its own name.
+func VaultSignCall(p Principal) string {
+	return "mesh.seat." + VaultSign.Seat + "." + CallKind + "." + VaultSign.Verb + "." + CallerToken(p.Username())
+}
+
 // VaultSecretChanged is the vault's event that a secret changed (a name and its generation, never a value), which a
 // node composing its own hears to compose again (issue 1126, ADR 0547 §2).
 var VaultSecretChanged = "mesh.mod." + VaultOwn.Seat + ".event.secret-changed"

go/buscompose/provisioner.go

@@ -3,9 +3,11 @@ package buscompose
 import (
 	"errors"
 	"fmt"
-	"git.novox.be/novox/mesh-sdk/go/delivery"
 	"strings"
 
+	"git.novox.be/novox/mesh-sdk/go/delivery"
+	"git.novox.be/novox/mesh-sdk/go/provisions"
+
 	"github.com/nats-io/nats.go"
 )
 
@@ -34,15 +36,19 @@ var ConfigResolvedBucket = BucketName("mesh-config", "resolved")
 // ProvisionerReads are the domains' buckets a provisioner client reads its own machine's keys of, each keyed
 // `<node>.…` (research 051): placement, the controller's assignments mirror (`<node>.<module>`), whose value carries
 // the provisioner's plan of a module handed to it (inventory.Provisioning, design 57 P5); and config,
-// mesh-config's resolved values. **Named one by one**, as the controller's asks are: a domain that moves to the
+// mesh-config's resolved values; and the seat mesh-provisioner's plans of its machine, `<node>.<module>` (novox/hq ADR
+// 0570 clause 2). **Named one by one**, as the controller's asks are: a domain that moves to the
 // provisioner adds its bucket here, and a bucket not named is one the client cannot read.
 var ProvisionerReads = []string{ConfigResolvedBucket}
 
 // ProvisionerReadsWhole are the buckets a provisioner client reads every key of: the controller's assignments mirror,
 // where a provider's consumers are bound to it in their own machines' plans, which the provider machine's client
 // reads to fill ${consumers:<provision>} with each one's credential (novox/hq ADR 0373, issue 679). It holds placement
-// and plans, never a secret's value; the client writes none of it.
-var ProvisionerReadsWhole = []string{AssignmentsBucket}
+// and plans, never a secret's value; the client writes none of it. **The seat's plans are read whole for the same
+// reason** (2026-10-30 recovery, issue 774): the client V3 watches every machine's plans to bind a provider's
+// consumers, and granted only its own machine's keys it read none. ADR 0570 clause 3 has providers act on the seat's
+// provision keys instead; once the client does, plans go back to its own machine's keys.
+var ProvisionerReadsWhole = []string{AssignmentsBucket, provisions.PlansBucket}
 
 // BoundState is a providing module's state of entries, one per consumer (mesh-sdk go/provider, issue 678): a
 // consumer's machine's client reads its own keys of it, `<node>.<module>.<provision>[.<local>]`, to fill
@@ -68,8 +74,13 @@ var (
 )
 
 // ProvisionerWrites are the server's buckets a client writes, and reads, its own machine's keys of (`<node>.>`)
-// and no other's: the needs it records, what it applied, and the items of the collections on its machine. A
-// client cannot write another machine's needs, or say another machine applied a file.
+// and no other's: the needs it records, what it applied, and the items of the collections on its machine. A client
+// cannot write another machine's needs, or say another machine applied a file.
+//
+// **The needs stay granted for one release, and are removed after the lease write** (review round 3 of design 47's
+// release): the client's V3 reads its machine's plans from the seat mesh-provisioner's `plans` (novox/hq ADR 0570 clause
+// 2) and records no needs, but the client before it still runs on a node until its delivery reaches it, and it writes
+// them.
 var ProvisionerWrites = []string{ProvisionerNeedsBucket, ProvisionerAppliedBucket, ProvisionerCollectBucket}
 
 // VerbsTheProvisionerAsksTheVault are the vault's verbs a provisioner client asks in its own name (ADR 0349

go/buscompose/seattraffic.go

@@ -58,6 +58,20 @@ func SeatTrafficOf(module string, holds, uses, watches []Seat) SeatTraffic {
 	var t SeatTraffic
 	for _, s := range holds {
 		if !s.isNewTraffic() {
+			// **A holder says its own seat's events** (novox/hq ADR 0564 clause 6, issue 1952): its own account is
+			// granted them by the held seats' rule (PermissionsFor, step 3), and a module the tool runner carries had
+			// no way to, so the self-check's `checked` was never said. Listed here, the membership names them for the
+			// runtime and the runtime is granted them. A machine's event on a node seat carries the machine, which
+			// only the holder's own account is composed with, so it is left to that rule.
+			if servedOnlyByTheController(s) {
+				continue
+			}
+			for _, e := range s.Emits {
+				if s.Scope == "node" && perMachineEvents[e] {
+					continue
+				}
+				t.Publish = append(t.Publish, seatSubject(s, "event", e))
+			}
 			continue
 		}
 		kind := ""

go/buscompose/state.go

@@ -156,6 +156,12 @@ func stateGrants(a stateAccess) []string {
 	}
 	for _, r := range a.Reads {
 		if bucket, ok := bucketOfRead(r); ok {
+			if NodeKeyedReads[r] {
+				if machineKey != "" {
+					read(bucket, machineKey+".>")
+				}
+				continue
+			}
 			read(bucket, "")
 		}
 	}
@@ -167,6 +173,11 @@ func stateGrants(a stateAccess) []string {
 	return out
 }
 
+// NodeKeyedReads are the states keyed `<node>.>` whose reader reads its own machine's keys alone, whatever its `reads`
+// names: the node-engine's data items, each node's disk-load reading its own node's (novox/hq ADR 0577 clause 1). A
+// machine with no usable name reaches none of them.
+var NodeKeyedReads = map[string]bool{delivery.EngineDataRead: true}
+
 // StreamCreatedAdvisory is the subject the bus says a stream was created on (the server's own advisory), here for a
 // bucket's stream KV_<bucket>.
 func StreamCreatedAdvisory(bucket string) string {
@@ -311,14 +322,49 @@ func RaiseBuckets(a BucketAsserter, buckets []Bucket) (undeclared []string, err
 // ResolvedBucket is mesh-config's state of resolved values, keyed `<node>.<module>.<key>`.
 const ResolvedBucket = "mesh-config_resolved"
 
-// NodeComposeReads is what a node's agent reads to compose its own modules (novox/hq ADR 0547 §2, ADR 0549 §3, issue
-// 1126): every key of the indexer's placement, modules and manifests and of the builder's builds, and of mesh-config's
-// resolved values only its own node's, `<node>.>`. Reads only; the node is checked as every subject token is by the
-// caller's principal.
+// NodeComposeReads is what a node's agent reads to compose its own modules (novox/hq ADR 0547 §2, ADR 0567 §3, §9,
+// issue 1126): every key of the seat mesh-placement's placement and candidates (both the assigner's states), of the
+// indexer's modules and manifests and of the builder's builds, and of mesh-config's resolved values only its own node's,
+// `<node>.>`. Every candidate key, not only `*.<node>`: a node answering its candidate composes with the whole
+// proposal laid over (the seed places every node at once, and a binding crosses nodes), and nothing in a placement is
+// secret. Reads only; the node is checked as every subject token is by the caller's principal.
 func NodeComposeReads(node string) []string {
 	var out []string
-	for _, bucket := range []string{delivery.PlacementBucket, delivery.ModulesBucket, delivery.ManifestsBucket, delivery.BuilderBuildsBucket} {
+	for _, bucket := range []string{delivery.PlacementBucket, delivery.PlacementCandidatesBucket, delivery.ModulesBucket,
+		delivery.ManifestsBucket, delivery.BuilderBuildsBucket} {
 		out = append(out, readGrants(bucket, "")...)
 	}
 	return append(out, readGrants(ResolvedBucket, node+".>")...)
 }
+
+// NodeComposeAdvisories are the stream-created advisories of the seat mesh-placement's placement and candidates
+// (ADR 0567 §9): what a node agent hears to bind each once it is made. Those two and no wider.
+func NodeComposeAdvisories() []string {
+	return []string{StreamCreatedAdvisory(delivery.PlacementBucket), StreamCreatedAdvisory(delivery.PlacementCandidatesBucket)}
+}
+
+// ServedReadGrants is the read of each key of mesh-config's resolved values named, `<node>.<module>.<key>`
+// (Principal.ServedReads, issue 1126): a get and a watch of that key alone. Each part is checked as every subject token
+// is, so a key cannot widen the grant.
+func ServedReadGrants(keys []string) ([]string, error) {
+	var out []string
+	seen := map[string]bool{}
+	for _, k := range keys {
+		parts := strings.Split(k, ".")
+		if len(parts) != 3 {
+			return nil, fmt.Errorf("%q is not <node>.<module>.<key>", k)
+		}
+		for _, part := range parts {
+			if !safeSubject.MatchString(part) {
+				return nil, fmt.Errorf("%q cannot be part of a subject: a permission is a subject pattern, and this would widen it", part)
+			}
+		}
+		for _, g := range readGrants(ResolvedBucket, k) {
+			if !seen[g] {
+				seen[g] = true
+				out = append(out, g)
+			}
+		}
+	}
+	return out, nil
+}

go/buscompose/streams.go

@@ -171,14 +171,9 @@ func MeshStreams() []Stream {
 			Why: "one declaration per node, always the newest; a node that sees sequence n refuses " +
 				"n-1 by construction (issue 107)",
 		},
-		{
-			Name:      AssignmentsStream,
-			Subjects:  []string{"mesh.assignment.*.*"},
-			Retention: RetentionLastPerSubject,
-			Direct:    true,
-			Why: "one membership per assignment, always the newest: what the mesh issued this module " +
-				"on this machine to serve and to reach (ADR 0160); read directly by the runtime it is for",
-		},
+		// The assignments stream (ADR 0160) is no longer the mesh's: a runtime reads its membership from the grants
+		// part's state memberships (ADR 0571 clause 7), and the bus module's tools delete the stream at the lease write
+		// (research 072 row 33), so it is not declared here, which would make it again.
 		{
 			Name: EventsStream,
 			// A seat's own events ride here too: they are 1:many like any event, and the

go/buscompose/testdata/controller-credentials.json

@@ -0,0 +1,21 @@
+{
+ "how": "Written by mesh-controller 0fbb5ef's own issueWith, sealProvisionerClient and heldProcessAccount (cmd/mesh-controller), run unchanged in a scratch integration test against a local store with the default seats seeded, on 2026-10-27 (issue 774): each row is the exact value the controller handed the vault. Never edit a row by hand: capture it again.",
+ "rows": [
+  {
+   "name": "module",
+   "held": "{\"url\":\"nats://10.0.0.1:4222\",\"fingerprint\":\"ab:cd\",\"node\":\"laptop\",\"module\":\"cap-bot\",\"user\":\"laptop.cap-bot\",\"password\":\"pw-module\",\"claims\":[{\"seat\":\"mesh-vault\",\"scope\":\"mesh\",\"serves\":[\"get\",\"accept\",\"secret-ask\",\"issued\",\"rotate\",\"move-in\",\"node-key\",\"own\",\"move-asks\"]},{\"seat\":\"node-service-manager\",\"scope\":\"node\",\"serves\":[\"status\"]},{\"seat\":\"mesh-controller\",\"scope\":\"mesh\",\"serves\":[\"tools\",\"calls\",\"status\",\"nodes\",\"node\",\"placement-export\",\"modules\",\"seats\",\"builds\",\"plans\",\"delivery-plan\",\"delivery-order\",\"delivery-check\",\"deliver\",\"delivery-stop\",\"delivery-backups-again\",\"delivery-walks\",\"plan\",\"assign\",\"unassign\",\"pin\",\"unpin\",\"push\",\"rotate\",\"give\",\"issued\",\"secret-move\",\"secret-ask\",\"issue\",\"token\",\"settings\",\"command\",\"queue\",\"cancel\",\"clear\",\"replay\",\"try\",\"kill\",\"pause\",\"resume\",\"hand-act\",\"drill\",\"warranted\",\"hand-acts\",\"durations\",\"conditions\",\"healers\",\"doctor\",\"upgrade\",\"bus\",\"retire\",\"cleanup\",\"judge-directories\",\"root-free\",\"dead-letters\",\"data\",\"build\",\"artifacts\",\"held\",\"collect\",\"move-placement\",\"move-config\",\"mirrors\",\"images\"]},{\"seat\":\"no-such-seat\",\"scope\":\"node\"}]}"
+  },
+  {
+   "name": "module-no-claims-no-fingerprint",
+   "held": "{\"url\":\"nats://10.0.0.1:4222\",\"node\":\"laptop\",\"module\":\"cap-plain\",\"user\":\"laptop.cap-plain\",\"password\":\"pw-plain\"}"
+  },
+  {
+   "name": "provisioner",
+   "held": "{\"url\":\"nats://10.0.0.1:4222\",\"fingerprint\":\"ab:cd\",\"node\":\"laptop\",\"user\":\"provisioner.laptop\",\"password\":\"pw-prov\"}"
+  },
+  {
+   "name": "process",
+   "held": "{\"url\":\"nats://10.0.0.1:4222\",\"fingerprint\":\"ab:cd\",\"node\":\"laptop\",\"module\":\"mesh-mail\",\"user\":\"laptop.mesh-mail.send\",\"password\":\"pw-proc\"}"
+  }
+ ]
+}

go/buscompose/userlist_switch.go

@@ -3,8 +3,12 @@ package buscompose
 import (
 	"slices"
 	"strings"
+	"time"
 
+	"git.novox.be/novox/mesh-sdk/go/announce"
 	"git.novox.be/novox/mesh-sdk/go/delivery"
+	"git.novox.be/novox/mesh-sdk/go/handacts"
+	"git.novox.be/novox/mesh-sdk/go/health"
 )
 
 // **The grants part's user list, sealed to the bus node** (novox/hq ADR 0547 clause 7, issue 1945). The grants part writes
@@ -77,8 +81,35 @@ func grantsOwnObjects(p Principal, pattern string) bool {
 // readers too (announce.State.Readers); both are honoured.
 const VaultBusAccounts = "mesh-vault.bus-accounts"
 
-// NamedReaders are the states only the modules named may read, by `<owner>.<name>`.
-var NamedReaders = map[string][]string{VaultBusAccounts: {GrantsModule}}
+// ArtifactStoreTools is the module holding the seat mesh-artifact-sweep (novox/hq ADR 0571 clause 2).
+const ArtifactStoreTools = "artifact-store-tools"
+
+// ConfigModule is the module that holds the seat mesh-config, a reader of the controller's lease (NamedReaders).
+const ConfigModule = "mesh-config"
+
+// NamedReaders are the states only the modules named may read, by `<owner>.<name>`: the grants part's wanted accounts
+// are read by the vault alone (novox/hq ADR 0561 §2).
+// The controller's lease is read by the parts that turn on at its write (ADR 0561 §3, §6), and by the assigner, which
+// reads the catalogue's placement alone from then (ADR 0549 §5, issue 774).
+//
+// The health holders (novox/hq ADR 0564 Limits 2 and 8, clauses 8 and 9): the condition keeper, mesh-healers and the
+// watchman read the lease; the keeper alone the controller's conditions; mesh-healers and mesh-hand-acts its hand-act log
+// (ADR 0565 clauses 10, 11: every reader of acts reads both logs); and nobody the healers' `would` (health_grants.go).
+var NamedReaders = map[string][]string{VaultBusAccounts: {GrantsModule}, GrantsAccounts: {VaultSeat},
+	ControllerLease: {VaultSeat, GrantsModule, delivery.AssignerModule, health.KeeperModule, health.HealersModule, WatchmanModule,
+		// ADR 0571 clause 2: the artifact store's seat sweeps only once the lease names no controller.
+		ArtifactStoreTools,
+		// ADR 0561 §3: mesh-config takes over the config only once the lease is handed away (its takeover.go leaseAway).
+		ConfigModule},
+	ControllerConditions: {health.KeeperModule}, ControllerHandActs: {health.HealersModule, handacts.Module}, HealersWould: {},
+	// ADR 0577 clause 1: the node-engine's data items are read by disk-load alone, each node's its own node's keys
+	// (NodeKeyedReads); the engine announces nothing of its own, so its readers are named here.
+	delivery.EngineDataRead: {health.DiskLoadModule},
+	// ADR 0583 §1 insight: every node's login is read by the grants part alone, each engine its own node's key through its
+	// machine principal (NodeLoginsReads), never through `reads`.
+	delivery.NodeLoginsRead: {GrantsModule},
+	// ADR 0587 §2: the open enrolments are read by their holder and, as a named reader, by the grants part.
+	delivery.EnrolmentsRead: {GrantsModule}}
 
 // ReaderMay says whether module may read the state read (`<owner>.<name>`) by the named readers: always, for a state
 // that names none.
@@ -99,6 +130,23 @@ func readsNamed(module string, reads []string) (granted, refused []string) {
 	return granted, refused
 }
 
+// withAnnouncedReads is d with its reads judged for d's module (ReadsAnnouncedBy) against what the owners announced:
+// every read its manifest names, granted or refused by the caller, judged again here, so a caller that split them
+// without the reader (the controller's own copy of a reader-less judgement, issue 774: the vault, the assigner, the
+// grants part and the artifact store's tools refused the lease they are named for) cannot refuse a read the reader is
+// named for, nor grant one named for another. With no announcements read it is withNamedReaders.
+func withAnnouncedReads(d Declared, announced map[string]announce.States) Declared {
+	if announced == nil {
+		return withNamedReaders(d)
+	}
+	all := append(append([]string(nil), d.Reads...), d.ReadsRefused...)
+	if len(all) == 0 {
+		return d
+	}
+	d.Reads, d.ReadsRefused = ReadsAnnouncedBy(d.Module, all, announced)
+	return d
+}
+
 // withNamedReaders is d with the reads named for other modules moved to its refused reads.
 func withNamedReaders(d Declared) Declared {
 	granted, refused := readsNamed(d.Module, d.Reads)
@@ -109,3 +157,30 @@ func withNamedReaders(d Declared) Declared {
 	d.ReadsRefused = append(append([]string(nil), d.ReadsRefused...), refused...)
 	return d
 }
+
+// **The hearings the grants part withholds, on the bus** (issue 1955 L7, mesh-delivery e564eaf): a hearing of a restricted
+// stream a module asks in the tool runner, withheld because only an account of its own may hear it (ADR 0376 §2), kept
+// in the grants part's state `withheld`, one key `<module>.<stream, lower case>.<machine>` (the controller's condition id
+// of it), written on change only and deleted once heard; the grants part's tools read it (D-heard was dropped on
+// 2026-10-30, so no other module reads it).
+const (
+	GrantsWithheldState  = "withheld"
+	GrantsWithheldBucket = GrantsModule + "_" + GrantsWithheldState
+	GrantsWithheldRead   = GrantsModule + "." + GrantsWithheldState
+	WithheldVersion      = 1
+)
+
+// WithheldHearing is one withheld hearing: the machine, the module, the restricted stream and its emitter, the plain
+// words of it and the remedy (Withheld.Said), and when the grants part first wrote it as it stands.
+type WithheldHearing struct {
+	V       int       `json:"v"`
+	Node    string    `json:"node"`
+	Module  string    `json:"module"`
+	Stream  string    `json:"stream"`
+	Emitter string    `json:"emitter"`
+	Said    string    `json:"said"`
+	At      time.Time `json:"at"`
+}
+
+// WithheldKey is a withheld hearing's key: `<module>.<stream, lower case>.<machine>`.
+func WithheldKey(w Withheld) string { return w.Module + "." + strings.ToLower(w.Stream) + "." + w.Node }

go/buscompose/users.go

@@ -2,9 +2,12 @@ package buscompose
 
 import (
 	"fmt"
-	"git.novox.be/novox/mesh-sdk/go/announce"
 	"slices"
 	"sort"
+	"strings"
+
+	"git.novox.be/novox/mesh-sdk/go/announce"
+	"git.novox.be/novox/mesh-sdk/go/delivery"
 )
 
 // Every user the composed file should contain, derived from what the mesh knows.
@@ -25,6 +28,9 @@ type Declared struct {
 	Emits    []string
 	Consumes []string
 	Serves   []string
+	// Served are the config keys its served values and zone name fill from its settings (catalogue.ServedSettings): what
+	// every node may read of its resolved values where it runs (Principal.ServedReads, issue 1126).
+	Served []string
 	// Holds are the seats this module claims, with the protocol each seat declares. A seat the
 	// mesh defines for itself declares no protocol, so holding one grants nothing on the bus —
 	// which is right: those seats are about who does a job, not about who may say what.
@@ -60,6 +66,9 @@ type Declared struct {
 	// ReadsRefused are the reads its manifest names that the owner's announcement does not make readable (novox/hq ADR
 	// 0495 clause 3, issue 1790): granted nothing, kept to be said.
 	ReadsRefused []string
+	// ReadLogs are, of its reads, those naming another module's log (`<module>.<log>`, novox/hq ADR 0571 clause 1): filled
+	// by Users and PlacementsOf from the logs the modules placed anywhere declare, never by a caller.
+	ReadLogs []string
 	// KeyedReads are keys of other modules' state it reads, each one key alone: what a seat's holder is
 	// granted for the pieces the modules beside it offer (novox/hq ADR 0260).
 	KeyedReads []KeyedRead
@@ -101,6 +110,9 @@ type ProcessPrincipal struct {
 	Emits []string
 	// Queues are the module's own work-queue streams this process is the one consumer of.
 	Queues []QueueOwner
+	// Removes are what its account may remove from the bus, as its bus declares them (the indexer's judge refuses any other; novox/hq
+	// ADR 0564 Limits 4): a tools bundle's account, whose whole authority is then BusRemovalGrants.
+	Removes []string
 	// State is the module's own state, by local name, this process reads and writes.
 	State []string
 	// Asks says whether this process reads the records of its module's own asks (novox/hq ADR 0259 §3), on
@@ -119,7 +131,8 @@ type Records struct {
 	Assigned map[string][]Declared
 	// Enrolling is every node with a live token — one enrolment user each, because the inbox an
 	// answer goes to is scoped to the token and a shared one is one machine reading another's
-	// sealed credentials (design 25 §6).
+	// sealed credentials (design 25 §6). The grants part fills it from the seat mesh-enrolment's keys at live or
+	// redeeming (novox/hq ADR 0587 §4), the controller from its store.
 	Enrolling []string
 	// People is each person's name against the tools they may invoke, `*` for an administrator.
 	People map[string][]string
@@ -130,9 +143,27 @@ type Records struct {
 	// account agents run as, judged unable to become root by its node-engine, and serves no login shell
 	// execute. A machine absent is not free: no record of a pass is no pass.
 	RootFree map[string]bool
+	// Engine is the node-engine's own declaration, from its manifest (EngineModule): placed on every node though no node is
+	// assigned it, since every node runs it (novox/hq ADR 0563 §2, §3). Its state, logs and streams are created by the
+	// grants part as a placed module's are; it adds no principal, since each node's engine speaks as the node's account.
+	// Nil where its manifest was not read.
+	Engine *Declared
+	// LeaseHandedAway says the controller's lease names a holder that is no controller (ADR 0582 §3), as the grants part
+	// reads it: an enrolment user then enrols through the seat mesh-enrolment alone (novox/hq ADR 0587 §6). The
+	// controller's composer never sets it. It is not LeaseCut: the cut is composed before the holder is written, so the
+	// grants part may write it, and outlasts the holder at a hand-back; the two are true together only in between.
+	LeaseHandedAway bool
+	// NodeLogins is each node's key of the vault's node-logins (novox/hq ADR 0583 §1): the login in use and the one
+	// rotating, each composed as a user of the node's permissions. A node absent logs in as `node.<n>` alone.
+	NodeLogins map[string]delivery.NodeLogin
 	// Announced is each module's last announcement of the states it keeps (novox/hq ADR 0495, issue 1790), as the
 	// controller keeps it; a module absent has announced nothing yet. Nil where none was read.
 	Announced map[string]announce.States
+	// LeaseCut composes the list of the lease write (novox/hq ADR 0582 clause 3, issue 774): the controller may neither
+	// write the lease's key nor update, purge or delete its bucket, and the grants part may write the key `holder`.
+	// Set by the grants part from the write's second step until a hand-back composes without it (clause 5); the
+	// controller's composer never sets it.
+	LeaseCut bool
 }
 
 // Users is every user the composed file should contain, in the order it will be written.
@@ -142,8 +173,11 @@ type Records struct {
 // correct.
 func Users(r Records) ([]Principal, error) {
 	out := []Principal{{Kind: KindController, Uses: asksSeatOf(r), AsksIssued: issuedOf(r), AsksTheVault: vaultVerbsOf(r),
-		AsksTheConfig: servedOf(r, VerbsTheControllerAsksTheConfig), FilesFor: sortedCopy(r.Nodes)}}
+		AsksTheConfig: servedOf(r, VerbsTheControllerAsksTheConfig), FilesFor: sortedCopy(r.Nodes), LeaseCut: r.LeaseCut}}
 
+	served := servedReadsOf(r)
+	logs := DeclaredLogs(r)
+	grants := -1
 	for _, node := range sortedCopy(r.Nodes) {
 		witness := false
 		var checks []string
@@ -157,10 +191,14 @@ func Users(r Records) ([]Principal, error) {
 			}
 			checks = append(checks, d.Checks...)
 		}
-		out = append(out, Principal{Kind: KindNode, Node: node, WitnessesController: witness, Checks: checks,
-			MovesIntoTheVault: servesMoveIn(r), StatesItsKeyToTheVault: servesVerb(r, VaultNodeKey),
-			AsksItsOwnSecrets:     servesVerb(r, VaultOwn),
-			FollowsGrantsUserList: bus})
+		// **One user per login the node has** (novox/hq ADR 0583 §1): the one in use, and while it rotates the other too,
+		// each with the node's permissions.
+		for _, login := range nodeLoginsOf(r, node) {
+			out = append(out, Principal{Kind: KindNode, Node: node, Login: login, WitnessesController: witness, Checks: checks,
+				MovesIntoTheVault: servesMoveIn(r), StatesItsKeyToTheVault: servesVerb(r, VaultNodeKey),
+				AsksItsOwnSecrets: servesVerb(r, VaultOwn), AsksTheVaultToSign: servesVerb(r, VaultSign), Uses: asksSeatOf(r),
+				FollowsGrantsUserList: bus, ServedReads: servedOn(served, node), RotatesItsLogin: servesVerb(r, VaultRotateNode)})
+		}
 		// **And the machine's provisioner client, on an account of its own** (novox/hq ADR 0349 clause 11): one
 		// per machine that runs it, delivered to the module running it.
 		for _, d := range r.Assigned[node] {
@@ -182,9 +220,14 @@ func Users(r Records) ([]Principal, error) {
 			}
 		}
 		for _, d := range r.Assigned[node] {
-			// A state with named readers is read by them alone (ADR 0547 clause 9): a read named for another module is
-			// granted nothing, here and in the runtime carrying the module.
-			d = withNamedReaders(d)
+			// **The node-engine's manifest is no placed module's** (novox/hq ADR 0563 §2, §3; issue 774): where a placement
+			// names it, it adds no user, no process and nothing the runner carries; its grants are the node's account's.
+			if !Composed(d) {
+				continue
+			}
+			// A state with named readers is read by them alone (ADR 0547 clause 9), and a read is granted what its owner
+			// announced (ADR 0495 clause 3): judged here, for this reader, whatever split the caller made (issue 774).
+			d = withReadLogs(withAnnouncedReads(d, r.Announced), logs)
 			// **A process account is its own, delivered in its own secret** (broker-<process id>, novox/hq
 			// ADR 0436 §1, §2), never the module's `broker` — so it is composed whether or not the module
 			// itself has an account, and is never carried by the machine's runtime, which runs as the
@@ -193,7 +236,7 @@ func Users(r Records) ([]Principal, error) {
 				out = append(out, Principal{
 					Kind: KindProcess, Node: node, Module: d.Module, Process: pr.Process,
 					Emits: pr.Emits, Queues: pr.Queues, State: pr.State, Uses: d.Uses, Asks: pr.Asks,
-					Invokes: pr.Invokes,
+					Invokes: pr.Invokes, Removes: pr.Removes,
 				})
 			}
 			if runtimeHere && d.Module == RuntimeModule {
@@ -212,14 +255,19 @@ func Users(r Records) ([]Principal, error) {
 				Kind: KindModule, Node: node, Module: d.Module,
 				Emits: d.Emits, Consumes: d.Consumes, Serves: d.Serves,
 				Holds: d.Holds, Uses: d.Uses, Watches: d.Watches, Invokes: d.Invokes,
-				State: stateNames(d.State), Reads: d.Reads, SnapshotsTheBus: d.SnapshotsTheBus,
+				State: stateNames(d.State), Reads: d.Reads, ReadLogs: d.ReadLogs, SnapshotsTheBus: d.SnapshotsTheBus,
 				PerMachine: perMachineNames(d.State), KeyedReads: d.KeyedReads,
 				Logs: logNames(d.Logs), Streams: d.Streams, Hears: ComposedHears(d), Queues: d.Queues,
 			})
 			// **The grants part creates what a manifest declares** (novox/hq ADR 0547 §5; the operator, 2026-10-26
 			// 08:54): every placed module's buckets, logs and streams, each by its stream's name.
+			if d.Module == WatchmanModule {
+				out[len(out)-1].DeadLetterSources = deadLetterSourcesOf(r)
+			}
 			if d.Module == GrantsModule {
 				out[len(out)-1].CreatesStreams = declaredStreamsOf(r)
+				out[len(out)-1].LeaseCut = r.LeaseCut
+				grants = len(out) - 1
 			}
 			// **The vault's holder asks the desks and the issuing providers itself** (issue 723), under the
 			// account its own runtime runs on (ADR 0259 §8's runs-as): the one module granted it.
@@ -231,8 +279,8 @@ func Users(r Records) ([]Principal, error) {
 		if runtimeHere {
 			var carried []Declared
 			for _, d := range r.Assigned[node] {
-				if d.RunsAs == "" && runnerServes(d) {
-					d = withNamedReaders(d)
+				if CarriedByRunner(d) {
+					d = withReadLogs(withAnnouncedReads(d, r.Announced), logs)
 					// Never a restricted stream for what the tool runner carries (novox/hq ADR 0376 §1).
 					d.Hears = ComposedHears(d)
 					carried = append(carried, d)
@@ -242,7 +290,8 @@ func Users(r Records) ([]Principal, error) {
 		}
 	}
 	for _, node := range sortedCopy(r.Enrolling) {
-		out = append(out, Principal{Kind: KindEnrolment, Node: node})
+		out = append(out, Principal{Kind: KindEnrolment, Node: node, Redeems: servesVerb(r, EnrolmentRedeem),
+			LeaseHandedAway: r.LeaseHandedAway})
 	}
 	for _, person := range sortedNames(r.People) {
 		p := Principal{Kind: KindPerson, Module: person, Invokes: r.People[person]}
@@ -253,6 +302,18 @@ func Users(r Records) ([]Principal, error) {
 		out = append(out, p)
 	}
 
+	// The vault's enrolment verbs are mesh-enrolment's alone, however wide another's grant (novox/hq ADR 0587 §1).
+	if slices.ContainsFunc(VerbsTheEnrolmentAsksTheVault, func(v SeatVerb) bool { return servesVerb(r, v) }) {
+		for i := range out {
+			out[i].VaultEnrols = true
+		}
+	}
+
+	// The grants part creates the durable consumers the accounts need (novox/hq ADR 0561 §6), by stream and name.
+	if grants >= 0 {
+		out[grants].CreatesConsumers = AccountConsumers(out)
+	}
+
 	// Refused here rather than discovered by the server. Two users with one name is a file the
 	// server reads as one of them, and which one depends on the order — so a module assigned to a
 	// node twice, or a person named after nothing, is a composition that must not be written.
@@ -347,6 +408,27 @@ func asksSeatOf(r Records) []Seat {
 	return nil
 }
 
+// nodeLoginsOf are the logins composed for node, as Principal.Login names them ("" for `node.<n>`): the one its
+// node-logins key says is in use and the one rotating, in that order; `node.<n>` alone when the key is absent or does
+// not hold (a key naming another node's login is no login of this node's).
+func nodeLoginsOf(r Records, node string) []string {
+	l, ok := r.NodeLogins[node]
+	if !ok || l.Node != node || (l.Login != delivery.FirstLogin(node) && l.Login != delivery.SecondLogin(node)) {
+		return []string{""}
+	}
+	login := func(name string) string {
+		if name == delivery.FirstLogin(node) {
+			return ""
+		}
+		return name
+	}
+	out := []string{login(l.Login)}
+	if l.Rotates() && l.Rotating == delivery.OtherLogin(node, l.Login) {
+		out = append(out, login(l.Rotating))
+	}
+	return out
+}
+
 // VaultSeat is the vault's seat: its holder alone asks the desks and the issuing providers in its own name.
 const VaultSeat = "mesh-vault"
 
@@ -423,6 +505,18 @@ func boundBucketsOf(r Records) []string {
 	return out
 }
 
+// Composed says a placed module is composed as one: its own user, its processes and what the runner carries of it.
+// The node-engine's manifest (EngineModule) is not, though a placement may name it: each node's engine speaks as the
+// node's account, which alone writes the engine's state under its own key (engineGrants, novox/hq ADR 0563 §2, §3), and
+// Records.Engine creates that state. Granted to another account it is a second writer, and the writers table refuses
+// the whole list (issue 774: met for mesh-host_acts and then mesh-host_health, 2026-10-30).
+func Composed(d Declared) bool { return d.Module != EngineModule }
+
+// CarriedByRunner says the machine's tool runner carries this placed module: a module composed at all (Composed) that
+// runs as no account of its own and has something for the runner to serve (runnerServes). The one test of what the
+// runner's grants are composed from.
+func CarriedByRunner(d Declared) bool { return Composed(d) && d.RunsAs == "" && runnerServes(d) }
+
 // runnerServes says the machine's tool runner has something of this module to serve (novox/hq ADR 0436 §1,
 // ADR 0437 §4, issue 1329): tools or loads it answers, a seat it holds, event families a session waits on,
 // a bundle the runtime loads (Loads), or a check its health asks. A module with none of these is a process of its own on its own credential, and
@@ -439,7 +533,15 @@ func runnerServes(d Declared) bool {
 // name. What the grants part may create, and nothing beside.
 func declaredStreamsOf(r Records) []string {
 	seen := map[string]bool{}
+	placed := [][]Declared{}
 	for _, mods := range r.Assigned {
+		placed = append(placed, mods)
+	}
+	// The node-engine's manifest is placed on every node (ADR 0563): its declared state is created as a placed module's.
+	if r.Engine != nil {
+		placed = append(placed, []Declared{*r.Engine})
+	}
+	for _, mods := range placed {
 		for _, d := range mods {
 			for _, b := range d.State {
 				seen["KV_"+b.Bucket()] = true
@@ -459,3 +561,32 @@ func declaredStreamsOf(r Records) []string {
 	sort.Strings(out)
 	return out
 }
+
+// servedReadsOf is every key of mesh-config's resolved values a module assigned on a node serves from,
+// `<node>.<module>.<key>`, sorted: each part a subject token, so a key that cannot be one is granted nothing (and the
+// node composing a consumer of it refuses, naming it), never a wider read.
+func servedReadsOf(r Records) []string {
+	var out []string
+	for node, declared := range r.Assigned {
+		for _, d := range declared {
+			for _, k := range d.Served {
+				if safeSubject.MatchString(node) && safeSubject.MatchString(d.Module) && safeSubject.MatchString(k) {
+					out = append(out, node+"."+d.Module+"."+k)
+				}
+			}
+		}
+	}
+	sort.Strings(out)
+	return slices.Compact(out)
+}
+
+// servedOn is, of the served keys, those of other nodes than node: its own slice it reads whole.
+func servedOn(served []string, node string) []string {
+	var out []string
+	for _, k := range served {
+		if !strings.HasPrefix(k, node+".") {
+			out = append(out, k)
+		}
+	}
+	return out
+}

go/buscompose/writers.go

@@ -43,6 +43,9 @@ func createsDeclared(p Principal, pattern string) bool {
 	if isController(p, pattern) {
 		return true
 	}
+	if removesAssignmentsStream(p, pattern) || setsLeaseExpiry(p, pattern) {
+		return true
+	}
 	name, ok := strings.CutPrefix(pattern, "$JS.API.STREAM.CREATE.")
 	if ok && p.Kind == KindModule && p.Module == GrantsModule && name == GrantsUserListObjectStream {
 		return true
@@ -93,6 +96,19 @@ func ownModule(p Principal, pattern string) bool {
 	return false
 }
 
+// moduleNamed is the writer that is module: its own principal, a process of it, or the node tools carrying it.
+func moduleNamed(module string) func(Principal, string) bool {
+	return func(p Principal, _ string) bool {
+		switch p.Kind {
+		case KindModule, KindProcess:
+			return p.Module == module
+		case KindNodeTools:
+			return slices.ContainsFunc(p.Carries, func(d Declared) bool { return d.Module == module })
+		}
+		return false
+	}
+}
+
 // ownAnnouncer is a module, a process of it or the node tools carrying it saying what that module keeps, or the
 // controller saying what it keeps itself (novox/hq ADR 0495 clause 2): each under its own name alone.
 func ownAnnouncer(p Principal, pattern string) bool {
@@ -155,7 +171,8 @@ var WritersTable = []WriterRow{
 		// subject is this machine's engine's alone.
 		Subjects: []string{"mesh.control.*.report", "mesh.control.*.health", "mesh.control.*.cli"}, Writes: ownMachine},
 	{State: "the controller lease", Writer: "the controller instance holding it", KeptIn: "key-value " + LeaseBucket,
-		Others: "a candidate waits", Subjects: kvOf(LeaseBucket), Writes: isController},
+		Others: "a candidate waits", Subjects: kvOf(LeaseBucket), Writes: writesTheLease,
+		Shared: "from the lease write's cut the controller writes it no more and the grants part writes its key holder alone (novox/hq ADR 0582 clause 3)"},
 	// The merges mesh-delivery announced, for a moved module's registration (ADR 0420 §7), written by the lease holder.
 	{State: "the merges mesh-delivery announced", Writer: "controller (lease holder)",
 		KeptIn: "key-value " + DeliveryMergesBucket, Others: "read at a moved module's registration",
@@ -185,7 +202,7 @@ var WritersTable = []WriterRow{
 		Subjects: []string{"$JS.API.STREAM.CREATE.>", "$JS.API.STREAM.UPDATE.>", "$JS.API.STREAM.DELETE.>",
 			"$JS.API.CONSUMER.DURABLE.CREATE.>"},
 		Writes: createsDeclared,
-		Shared: "the grants part creates a stream a manifest declares, by its name, and never updates or deletes one (novox/hq ADR 0547 §5; the operator, 2026-10-26 08:54)"},
+		Shared: "the grants part creates a stream a manifest declares, by its name, and never updates or deletes one (novox/hq ADR 0547 §5; the operator, 2026-10-26 08:54); the bus module's tools account deletes the stream ASSIGNMENTS at the lease write, and no other (research 072 row 33), and updates the lease's bucket for its expiry alone (novox/hq ADR 0582 clause 3)"},
 	{State: "builds and their outcomes", Writer: "the build seat's holder", KeptIn: "its own state",
 		Others:   "the controller asks",
 		Subjects: []string{"mesh.seat.node-build-agent.event.built", "mesh.seat.mesh-build-machine.event.built"},
@@ -214,13 +231,24 @@ var WritersTable = []WriterRow{
 		Writes: ownModule},
 	{State: "the operator-channel's open messages", Writer: "the seat's holder", KeptIn: "its own key-value state",
 		Others: "—"},
+	// The seat mesh-enrolment's open enrolments (novox/hq ADR 0587 §2, issue 774): its holder alone writes them, each a
+	// compare-and-set at the revision read; the grants part reads them as a named reader.
+	{State: "the open enrolments", Writer: "the seat mesh-enrolment's holder, compare-and-set",
+		KeptIn:   "key-value " + delivery.EnrolmentsBucket + ", with per-key expiry",
+		Others:   "the grants part reads them (a named reader) and composes each enrol.<node> user from them",
+		Subjects: kvOf(delivery.EnrolmentsBucket), Writes: moduleNamed(delivery.EnrolmentModule)},
+	// Which login each node uses (novox/hq ADR 0583 §1 insight): the vault alone writes it.
+	{State: "a node's logins", Writer: "the vault", KeptIn: "key-value " + delivery.NodeLoginsBucket,
+		Others:   "the grants part reads every key, each node's engine its own node's key alone",
+		Subjects: kvOf(delivery.NodeLoginsBucket), Writes: moduleNamed(delivery.VaultModule)},
 	{State: "the facts snapshot", Writer: "controller", KeptIn: "the artifact store, facts/latest",
 		Others: "the build seat reads"},
 	// What a consumer gave up on (novox/hq issue 330): copied by the controller from the server's notice,
 	// and delivered again or dropped only through its verb, with why.
 	{State: "a message a consumer gave up on", Writer: "controller", KeptIn: "the bus, the stream " + DeadLettersStream,
 		Others:   "read, delivered again or dropped through the controller's dead-letters verb",
-		Subjects: []string{deadLetterPrefix + ">", againPrefix + ">"}, Writes: isController},
+		Subjects: []string{deadLetterPrefix + ">", againPrefix + ">"}, Writes: keepsDeadLetters,
+		Shared: "the watchman keeps the copies from the controller's lease write, the controller before it; delivering again stays the controller's (novox/hq ADR 0564 clause 5)"},
 	// The record mirrors (novox/hq ADR 0289 §9, design 54 §2): rows of this table, so a grant that lets
 	// anything else write them is refused at composition. Built so far: the assignments and each registered
 	// module's declared config (design 57 F3), and the list of predefined keys kept (design 57 K3).
@@ -245,6 +273,27 @@ var WritersTable = []WriterRow{
 	{State: "a machine's have", Writer: "the node-engine of the machine, under its own keys `<node>.>`",
 		KeptIn: "key-value " + delivery.HaveBucket + ", twenty revisions of each key",
 		Others: "read through `reads` as node-engine.have", Subjects: kvOf(delivery.HaveBucket), Writes: ownNodeKeys},
+	// The acts a node's engine was asked through its node seat, and its own asks (novox/hq ADR 0563 §2, §3): the
+	// node-engine's declared state, created by the grants part, written by each node's engine under its own keys.
+	// A node's own health report (issue 774): its engine's own key, read by the watchman.
+	{State: "a machine's health report", Writer: "the node-engine of the machine, its key `<node>` alone",
+		KeptIn: "key-value " + delivery.NodeHealthBucket, Others: "read by the watchman through `reads`",
+		Subjects: kvOf(delivery.NodeHealthBucket), Writes: ownNodeKeys},
+	// A node's declared packages (novox/hq ADR 0565 clause 6): its engine's own key, read by pacman's verbs.
+	{State: "a machine's declared packages", Writer: "the node-engine of the machine, its key `<node>` alone",
+		KeptIn: "key-value " + EnginePackagesBucket, Others: "read by pacman through `reads`",
+		Subjects: kvOf(EnginePackagesBucket), Writes: ownNodeKeys},
+	// A node's placed modules' data items (novox/hq ADR 0577 clause 1): its engine's own keys, read by that node's disk-load.
+	{State: "a machine's data items", Writer: "the node-engine of the machine, under its own keys `<node>.>`",
+		KeptIn: "key-value " + EngineDataBucket, Others: "read by the node's disk-load through `reads`, its own node's keys alone",
+		Subjects: kvOf(EngineDataBucket), Writes: ownNodeKeys},
+	{State: "a machine's hand acts", Writer: "the node-engine of the machine, under its own keys `<node>.>`, compare-and-set",
+		KeptIn: "key-value " + EngineActsBucket + ", the node-engine's declared state acts",
+		Others: "read through the node seat's verb acts", Subjects: kvOf(EngineActsBucket),
+		Writes: func(p Principal, pattern string) bool {
+			return ownNodeKeys(p, pattern) || removesEngineActs(p, pattern)
+		},
+		Shared: "the bus module's tools account removes keys of a full bucket, for removal only (novox/hq ADR 0564 Limits 4)"},
 	// The contents of a declaration's files over 64 KiB (novox/hq ADR 0486 §2): the controller alone writes the bucket, each
 	// object under the digest of its content; a node-engine reads one by its name, with no list and no write.
 	{State: "a declaration's large files", Writer: "controller, each object under the sha256 digest of its content; the " +
@@ -263,7 +312,8 @@ var WritersTable = []WriterRow{
 		KeptIn: "key-value " + PredefinedBucket, Others: "read through `reads` as mesh-controller." + MirrorPredefined,
 		Subjects: kvOf(PredefinedBucket), Writes: isController},
 	{State: "the declared-packages mirror", Writer: "controller (lease holder), from the composition of each node, only on a change",
-		KeptIn: "key-value " + DeclaredPackagesBucket, Others: "read through `reads` as mesh-controller." + MirrorDeclaredPackages,
+		KeptIn: "key-value " + DeclaredPackagesBucket, Others: "read through `reads` as mesh-controller." + MirrorDeclaredPackages +
+			", and each node's engine its node's key, until the lease write (ADR 0565 clause 6)",
 		Subjects: kvOf(DeclaredPackagesBucket), Writes: isController},
 	// What a machine's provisioner client placed of a module's files (novox/hq ADR 0349 §4, design 57 P6): its own
 	// machine's word alone, which a walk's end and a gate wait for (ADR 0362, ADR 0349 §15). Kept newest per module

go/busretry/busretry.go

@@ -0,0 +1,76 @@
+// Package busretry waits out a bus that answers nothing for a few seconds (issue 774, the sweep of 2026-10-30: bus
+// blackouts at every user-list reload). nats-server 2.11's reloadAuthorization rebuilds the accounts, and for a few
+// seconds the mesh's account has none of its imports, $JS.API.> among them: every request is answered "no responders"
+// and every JetStream call "jetstream not enabled". A write or a call made in that window failed, and was lost.
+//
+// Only an error that says the request reached no one is waited out (Undelivered): nothing was done, so asking again
+// is safe even for a write that is not idempotent. A timeout, or any answer, is never asked again: the request may
+// have been delivered. The wait is bounded (Bound, about 30 s, backing off), and said on standard error when it ends
+// without an answer.
+//
+// This is the quick fix. The thorough one is a reload that keeps the account's imports, in the bus's holder.
+package busretry
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/nats-io/nats.go"
+	"github.com/nats-io/nats.go/jetstream"
+)
+
+// Bound is how long a request that reached no one is asked again; FirstWait the first pause, doubled to MostWait.
+var (
+	Bound     = 30 * time.Second
+	FirstWait = 250 * time.Millisecond
+	MostWait  = 4 * time.Second
+)
+
+// Undelivered says err means the request reached no one: no responders, JetStream not enabled (for the account), or
+// no response from the stream after the client's own retries on no responders; also said in words by a runtime that
+// passed the error on.
+func Undelivered(err error) bool {
+	var answered *Answered
+	if err == nil || errors.As(err, &answered) {
+		return false
+	}
+	if errors.Is(err, nats.ErrNoResponders) || errors.Is(err, jetstream.ErrJetStreamNotEnabled) ||
+		errors.Is(err, jetstream.ErrJetStreamNotEnabledForAccount) || errors.Is(err, jetstream.ErrNoStreamResponse) ||
+		errors.Is(err, nats.ErrJetStreamNotEnabled) || errors.Is(err, nats.ErrJetStreamNotEnabledForAccount) {
+		return true
+	}
+	words := strings.ToLower(err.Error())
+	return strings.Contains(words, "no responders") || strings.Contains(words, "jetstream not enabled")
+}
+
+// Answered is an error a callee answered with: the request was delivered, whatever its words say ("jetstream not
+// enabled" in a callee's own answer), so Undelivered never counts it and Do never asks it again.
+type Answered struct{ Words string }
+
+func (a *Answered) Error() string { return a.Words }
+
+// Do runs try, and again while its error says the request reached no one, until Bound has passed. blackout, when
+// given, is asked after each such error and Do stops waiting when it says the bus is not blacked out: a call nobody
+// answers because its callee is not running fails at once, as before. what names the request in the error.
+func Do[T any](what string, try func() (T, error), blackout func() bool) (T, error) {
+	v, err := try()
+	if !Undelivered(err) || (blackout != nil && !blackout()) {
+		return v, err
+	}
+	start, wait := time.Now(), FirstWait
+	for time.Since(start) < Bound {
+		time.Sleep(wait)
+		wait = min(wait*2, MostWait)
+		v, err = try()
+		if !Undelivered(err) || (blackout != nil && !blackout()) {
+			return v, err
+		}
+	}
+	err = fmt.Errorf("%s: the bus answered nothing for %s, asked again until then (a user-list reload drops the "+
+		"account's imports for a few seconds; this was longer): %w", what, time.Since(start).Round(time.Second), err)
+	fmt.Fprintf(os.Stderr, "[mesh-sdk] %v\n", err)
+	return v, err
+}

go/busretry/busretry_test.go

@@ -0,0 +1,48 @@
+package busretry
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/nats-io/nats.go"
+	"github.com/nats-io/nats.go/jetstream"
+)
+
+// Issue 774 (bus blackouts at every user-list reload): only a request that reached no one is asked again, within the
+// bound; a blackout probe that says the bus answers ends the wait at once.
+func TestABusThatAnswersNothingIsWaitedOut(t *testing.T) {
+	Bound, FirstWait, MostWait = 60*time.Millisecond, time.Millisecond, 4*time.Millisecond
+	for _, row := range []struct {
+		name      string
+		errs      []error // what each try answers; the last repeats
+		blackout  func() bool
+		tries     int // at least
+		atMost    int
+		delivered bool
+	}{
+		{"no responders, then an answer", []error{nats.ErrNoResponders, nats.ErrNoResponders, nil}, nil, 3, 3, true},
+		{"jetstream not enabled, then an answer", []error{jetstream.ErrJetStreamNotEnabled, nil}, nil, 2, 2, true},
+		{"said in words by a runtime", []error{errors.New("nats: no responders available for request"), nil}, nil, 2, 2, true},
+		{"a timeout may have been delivered: never asked again", []error{context.DeadlineExceeded}, nil, 1, 1, false},
+		{"an answer that refuses is an answer", []error{errors.New("refused")}, nil, 1, 1, false},
+		{"nobody answers on a bus that answers: the callee is not running", []error{nats.ErrNoResponders}, func() bool { return false }, 1, 1, false},
+		{"blacked out past the bound: said", []error{jetstream.ErrJetStreamNotEnabledForAccount}, func() bool { return true }, 3, 1000, false},
+	} {
+		tries := 0
+		_, err := Do("the test", func() (int, error) {
+			e := row.errs[min(tries, len(row.errs)-1)]
+			tries++
+			return tries, e
+		}, row.blackout)
+		if tries < row.tries || tries > row.atMost || (err == nil) != row.delivered {
+			t.Errorf("%s: %d tries, %v", row.name, tries, err)
+		}
+		if strings.HasPrefix(row.name, "blacked out") && (!Undelivered(err) || !strings.Contains(fmt.Sprint(err), "the bus answered nothing")) {
+			t.Errorf("%s: %v", row.name, err)
+		}
+	}
+}

go/caller_test.go

@@ -75,6 +75,21 @@ func TestACallerInTheArgumentsIsNeverTheCaller(t *testing.T) {
 	if got != "shanks.node-tools" {
 		t.Fatalf("with a caller in the arguments the tool read %q, want the runtime's", got)
 	}
+	// A module's trusted list of callers (issue 774, ADR 0563 §8) grants the callers it names as the runtime proved them:
+	// a module on any machine, <machine>.<module> exactly, person.<name> exactly; no wildcard, never one unproven.
+	callers, err := ParseCallers([]byte(`{"callers":["node-tools","ace.claude-code","person.jo","*"]}`))
+	if err != nil {
+		t.Fatal(err)
+	}
+	for caller, want := range map[string]bool{"shanks.node-tools": true, "ace.claude-code": true, "g14.claude-code": false,
+		"person.jo": true, "person.node-tools": false, Unproven: false, "": false, "novox.mesh-vault": false} {
+		if callers.Allows(caller) != want {
+			t.Errorf("%q allowed: %v, want %v", caller, !want, want)
+		}
+	}
+	if _, err := ParseCallers([]byte(`{"callers":["x"],"more":1}`)); err == nil {
+		t.Error("a list with a field it does not know was read")
+	}
 }
 
 // A runtime that names no caller — one from before issue 365, or a call on the subject that names none — is

go/callers.go

@@ -0,0 +1,48 @@
+package stdio
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+// Callers is a module's trusted list of who may call a verb of its (novox/hq ADR 0459 §2, ADR 0563 §8), as the mesh
+// writes a list setting into a file the module reads: `{"callers": [...]}`. An entry is a module's name (that module on
+// any machine), exactly <machine>.<module>, or exactly person.<name>. Each caller is the runtime's proof (CallerOf), never
+// an argument; nobody beyond the list is granted, a wildcard is no entry, and an unproven caller never matches.
+type Callers []string
+
+// ParseCallers reads a callers file: the list under `callers`, and nothing else.
+func ParseCallers(raw []byte) (Callers, error) {
+	var f struct {
+		Callers Callers `json:"callers"`
+	}
+	dec := json.NewDecoder(bytes.NewReader(raw))
+	dec.DisallowUnknownFields()
+	if err := dec.Decode(&f); err != nil {
+		return nil, fmt.Errorf("the callers setting is not a list of callers: %v", err)
+	}
+	return f.Callers, nil
+}
+
+// Allows says whether caller, as the runtime proved it, is one the list names.
+func (c Callers) Allows(caller string) bool {
+	if caller == "" || caller == Unproven {
+		return false
+	}
+	for _, entry := range c {
+		if entry == "" || strings.ContainsAny(entry, "*> ") {
+			continue
+		}
+		if entry == caller {
+			return true
+		}
+		if !strings.Contains(entry, ".") {
+			if _, module, ok := strings.Cut(caller, "."); ok && module == entry && !strings.HasPrefix(caller, "person.") {
+				return true
+			}
+		}
+	}
+	return false
+}

go/catalogue/a_service_process_test.go

@@ -2,7 +2,6 @@ package catalogue
 
 import (
 	"encoding/json"
-	"strings"
 	"testing"
 )
 
@@ -31,7 +30,7 @@ func aServiceModule(t *testing.T) Manifest {
 	  "build": {"artifacts": [{"name": "code", "kind": "bundle", "language": "go", "system": "arch",
 	    "from": "cmd/svc", "binary": "svc"}]}
 	}`
-	m, err := ParseManifest([]byte(raw))
+	m, err := decodeForTest([]byte(raw))
 	if err != nil {
 		t.Fatalf("the service's manifest is refused: %v", err)
 	}
@@ -145,22 +144,3 @@ func TestWhatAProcessReplacesIsNamedAsTheHostRecordedIt(t *testing.T) {
 		t.Fatalf("the process replaces %s", got)
 	}
 }
-
-func TestWhatReplacesMayNameIsRefusedNearItsAuthor(t *testing.T) {
-	for what, resource := range map[string]string{
-		"a container":        `{"id":"c","type":"container","name":"c","image":"x@` + aServiceDigest + `","replaces":["old"]}`,
-		"a step":             `{"id":"p","type":"process","name":"p","run":["./p"],"run-once":true,"replaces":["old"]}`,
-		"something declared": `{"id":"p","type":"process","name":"p","run":["./p"],"replaces":["p"]}`,
-		"another module's":   `{"id":"p","type":"process","name":"p","run":["./p"],"replaces":["other.old"]}`,
-		"not a list":         `{"id":"p","type":"process","name":"p","run":["./p"],"replaces":"old"}`,
-	} {
-		raw := `{"module":"m","version":"1","resources":[` + resource + `]}`
-		if _, err := ParseManifest([]byte(raw)); err == nil || !strings.Contains(err.Error(), "replace") {
-			t.Errorf("replaces on %s was accepted: %v", what, err)
-		}
-	}
-	ok := `{"module":"m","version":"1","resources":[{"id":"p","type":"process","name":"p","run":["./p"],"replaces":["old"]}]}`
-	if _, err := ParseManifest([]byte(ok)); err != nil {
-		t.Errorf("a process replacing what its module no longer declares was refused: %v", err)
-	}
-}

go/catalogue/accesses_test.go

@@ -76,33 +76,3 @@ func TestAModuleMayNotOwnWhatAnotherAccesses(t *testing.T) {
 		t.Errorf("the refusal does not explain the ownership conflict: %v", err)
 	}
 }
-
-// A manifest states an access's extent, the way a listening port states its source. An absolute
-// path and a mode of read or read-write; anything else is refused rather than acted on wrongly.
-func TestAnAccessIsValidated(t *testing.T) {
-	good := []byte(`{"module":"m","accesses":[{"path":"/services/media","mode":"read-write"}]}`)
-	if _, err := ParseManifest(good); err != nil {
-		t.Fatalf("a valid access was refused: %v", err)
-	}
-
-	// Mode is optional and narrows to read — the safe default, because the danger with an access
-	// is being given more than was meant, not less.
-	bare := []byte(`{"module":"m","accesses":[{"path":"/services/media"}]}`)
-	m, err := ParseManifest(bare)
-	if err != nil {
-		t.Fatalf("an access with no mode was refused: %v", err)
-	}
-	if m.Accesses[0].At() != AccessRead {
-		t.Errorf("an access with no mode is %q, want %q", m.Accesses[0].At(), AccessRead)
-	}
-
-	relative := []byte(`{"module":"m","accesses":[{"path":"services/media","mode":"read"}]}`)
-	if _, err := ParseManifest(relative); err == nil {
-		t.Error("a relative access path was accepted")
-	}
-
-	wrong := []byte(`{"module":"m","accesses":[{"path":"/services/media","mode":"append"}]}`)
-	if _, err := ParseManifest(wrong); err == nil {
-		t.Error("an access with an unknown mode was accepted")
-	}
-}

go/catalogue/adoption_test.go

@@ -258,15 +258,6 @@ WantedBy=multi-user.target
 	}
 }
 
-func TestAGuardedPortMustBeAPort(t *testing.T) {
-	if _, err := ParseManifest([]byte(`{"module":"postgres","guards":[5432]}`)); err != nil {
-		t.Fatalf("guards is refused: %v", err)
-	}
-	if _, err := ParseManifest([]byte(`{"module":"postgres","guards":[0]}`)); err == nil {
-		t.Fatal("guarding port 0 was accepted")
-	}
-}
-
 func keys[V any](m map[string]V) []string {
 	return sortedKeys(m)
 }

go/catalogue/agent_account_test.go

@@ -43,7 +43,7 @@ const agentModule = `{"module": "agent", "version": "1", "resources": [
 ]}`
 
 func TestTheAgentAccountIsDeclaredNeverRootOnlyToAnEngineThatJudgesIt(t *testing.T) {
-	m, err := ParseManifest([]byte(agentModule))
+	m, err := decodeForTest([]byte(agentModule))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -83,37 +83,3 @@ func TestTheAgentAccountIsDeclaredNeverRootOnlyToAnEngineThatJudgesIt(t *testing
 		t.Errorf("with no agent account, the agent's directory is the operator's: %v", home)
 	}
 }
-
-func TestTheRuntimeIsToldTheAgentAccount(t *testing.T) {
-	with := Rendering{ArtifactStore: "anchor.internal:5101",
-		Needed: map[string]map[string]string{RuntimeModule: {"broker": "sealed-credential"}}}
-	envOf := func(r Resolution) map[string]string {
-		t.Helper()
-		r.Node, r.Modules = "anchor", []Manifest{aToolsModule(t, "nftables", "tools/index.js"), theRuntime(t)}
-		out, err := r.Declaration(with)
-		if err != nil {
-			t.Fatal(err)
-		}
-		process := fileNamed(out, RuntimeModule+"."+RuntimeProcessID())
-		if process == nil {
-			t.Fatal("no runtime process was composed")
-		}
-		return process["env"].(map[string]string)
-	}
-	env := envOf(Resolution{Account: "ops", AgentAccount: "agent"})
-	if env[RuntimeAgentAccount] != "agent" || env[RuntimeAgentHome] != "/home/agent" || env[RuntimeOperatorAccount] != "ops" {
-		t.Errorf("the runtime is not told whom agents run as: %v", env)
-	}
-	env = envOf(Resolution{Account: "ops"})
-	if env[RuntimeAgentAccount] != "ops" || env[RuntimeAgentHome] != "/home/ops" {
-		t.Errorf("with no agent account, agents run as the operator: %v", env)
-	}
-	env = envOf(Resolution{})
-	if _, set := env[RuntimeAgentAccount]; set {
-		t.Errorf("a machine with no account names an agent account: %v", env)
-	}
-	if problems := bundleEnvProblems("x", Artifact{Name: "b", Kind: ArtifactBundle, Loads: []string{"x"},
-		Env: map[string]string{RuntimeAgentAccount: "me"}}); len(problems) == 0 {
-		t.Error("a bundle may tell the runtime whom agents run as")
-	}
-}

go/catalogue/amqp_is_not_a_provision_test.go

@@ -14,22 +14,6 @@ import (
 // the old wire protocol asks for the one server being retired, so both directions are refused at the
 // parser — this is judged from the manifest alone, no store needed.
 
-func TestAManifestProvidingAmqpIsRefused(t *testing.T) {
-	raw := []byte(`{"module":"old-broker","version":"1","provides":[{"name":"amqp","scope":"mesh"}]}`)
-	_, err := ParseManifest(raw)
-	if err == nil || !strings.Contains(err.Error(), `provides "amqp", which is not a provision`) {
-		t.Fatalf("a module providing amqp was not refused, or not for the reason: %v", err)
-	}
-}
-
-func TestAManifestRequiringAmqpIsRefused(t *testing.T) {
-	raw := []byte(`{"module":"forwarder","version":"1","requires":["amqp"]}`)
-	_, err := ParseManifest(raw)
-	if err == nil || !strings.Contains(err.Error(), `requires "amqp", which is not a provision`) {
-		t.Fatalf("a module requiring amqp was not refused, or not for the reason: %v", err)
-	}
-}
-
 // And the catalogue (internal/beside) names it nowhere — the three modules that did are removed under
 // design 28 task 5.4, not converted.
 func TestNoCatalogueManifestNamesAmqp(t *testing.T) {

go/catalogue/artifact_sweep_seat.go

@@ -0,0 +1,49 @@
+package catalogue
+
+// **The artifact sweep, out of the controller** (novox/hq ADR 0571 clause 2, issue 1955): what the artifact store keeps
+// and lets go of, the seat `mesh-artifact-sweep` (named for its scope, ADR 0121 §1; the operator, 2026-10-29), held
+// once for the mesh by artifact-store-tools, serves what the controller served of its store (artifacts, held, mirrors, images, collect) and says `artifacts-gone`. Its keep set is the store's own listing joined
+// with every want's fingerprint and each module's five newest builds from the builder's log (ADR 0526 §1); it lets go
+// of nothing until the controller's lease names a holder that is no controller.
+
+// ArtifactSweepSeat is the seat artifact-store-tools holds. Not the seat mesh-artifact-store, the store itself held by
+// distribution, and not the provision artifact-store it delivers.
+const ArtifactSweepSeat = "mesh-artifact-sweep"
+
+// artifactSweepVerbs are the seat's verbs, with the controller's arguments so a caller changes only the seat it asks.
+func artifactSweepVerbs() []Verb {
+	return []Verb{
+		{Name: "artifacts", Description: "Every artifact the mesh made that lives in its artifact store, each with its " +
+			"repository, digest, kind (image or archive) and state: kept, and why (a want names it, or one of the five " +
+			"newest builds of its module in the builder's log), eligible (made, kept for no reason, not yet let go), or " +
+			"unrecorded (in the store and named by nothing the mesh made: never removed). Reads only.",
+			Input: schema(map[string]string{
+				"repository": "only this repository's references, as <module>/<artifact> (the counts stay whole)",
+				"collected":  "\"true\": list the collected references too (counted always)",
+			}, nil, "collected")},
+		{Name: "held", Description: "Whether the artifact store holds each reference given, asked with one HEAD each: " +
+			"held, gone (the store answered 404) or unknown with why. The builder asks it before it reuses a done key. " +
+			"Reads only.",
+			Input: listed(schema(map[string]string{
+				"references": "the artifacts' references, artifact-store://<module>/<artifact>/blobs/sha256:<hex>: a list, " +
+					"or one text separated by commas",
+			}, []string{"references"}), "references")},
+		{Name: "collect", Description: "The artifact store's sweep, now: what is eligible is let go of. Without confirm a " +
+			"dry run: what would be let go, nothing held or deleted. With confirm and why: every kept archive held first, " +
+			"then each eligible artifact let go of, oldest first, an index with the platform manifests no kept index " +
+			"names, each deletion recorded in the hand-act log. Bounded by most (500 by default, at most 5000) and 45 " +
+			"seconds; what is left is said. Never touches a digest the mesh did not make.",
+			Input: schema(map[string]string{
+				"confirm": "\"true\": let go of what is eligible (needs why); without it nothing is done",
+				"why":     "with confirm: why, required and recorded",
+				"most":    "let go of at most this many (500 by default, at most 5000)",
+			}, nil, "confirm")},
+		{Name: "mirrors", Description: "The bases the mesh copied into its artifact store, each kept (a kept build stood on " +
+			"it), eligible (only builds no longer kept stood on it) or unrecorded (no build the builder's log holds stood on " +
+			"it: never removed), by what the builder's log says each build stood on. Records nothing by hand.",
+			Input: schema(map[string]string{}, nil)},
+		{Name: "images", Description: "Every container image one machine's want and have name, each with the resources " +
+			"naming it: what the machine keeps when it prunes its images. Reads only.",
+			Input: schema(map[string]string{"node": "the machine's name"}, []string{"node"})},
+	}
+}

go/catalogue/backup_test.go

@@ -5,28 +5,16 @@ import (
 	"testing"
 )
 
-// A backup contribution written by hand still names its module's own directories; one it does not
-// declare is refused where it is written rather than reaching the holder as the literal text. (The
-// catalogue check refuses a hand-written backup line at all since ADR 0233; parsing still reads one,
-// because a module on the shelf was written before.)
-func TestABackupNamingAnUndeclaredDirectoryIsRefused(t *testing.T) {
-	_, err := ParseManifest([]byte(`{"module":"pg","version":"1",
-		"contributions":[{"seat":"node-backup","kind":"backup","content":"path ${dir:nowhere}"}]}`))
-	if err == nil || !strings.Contains(err.Error(), "nowhere") {
-		t.Fatalf("a backup of an undeclared directory was accepted: %v", err)
-	}
-}
-
 // A module on the shelf from before ADR 0233, which writes its backup lines by hand and declares no
 // data, is still backed up: its lines are placed as written, each module's under a comment naming it.
 func TestHandWrittenBackupLinesOfAnOlderModuleArePlaced(t *testing.T) {
-	pg, err := ParseManifest([]byte(`{"module":"pg","version":"1",
+	pg, err := decodeForTest([]byte(`{"module":"pg","version":"1",
 		"resources":[{"id":"dumps","type":"directory","path":"/srv/pg/dumps","mode":"0700"}],
 		"contributions":[{"seat":"node-backup","kind":"backup","content":"run pg-dump-all\npath ${dir:dumps}"}]}`))
 	if err != nil {
 		t.Fatal(err)
 	}
-	mail, err := ParseManifest([]byte(`{"module":"mail","version":"1",
+	mail, err := decodeForTest([]byte(`{"module":"mail","version":"1",
 		"resources":[{"id":"spool","type":"directory","mode":"0700"}],
 		"contributions":[{"seat":"node-backup","kind":"backup","content":"path ${dir:spool}"}]}`))
 	if err != nil {

go/catalogue/bootstrap_cycle_test.go

@@ -1,34 +1,12 @@
 package catalogue
 
 import (
-	"strings"
 	"testing"
 )
 
-// The module that provides the artifact store may not be delivered through it.
-//
-// Building publishes to the store and the builder will not start without one, so a module that
-// provides the store and also builds something asks the mesh to put an artifact into the thing
-// that artifact is needed to create. On a mesh new enough to have no registry, that is a build
-// that never returns (novox/hq 04-ISSUES/029).
-func TestTheArtifactStoreCannotBeDeliveredThroughItself(t *testing.T) {
-	_, err := ParseManifest([]byte(`{"module":"registry","version":"1",` +
-		`"provides":[{"name":"artifact-store","scope":"mesh"}],` +
-		`"build":{"artifacts":[{"name":"registry","kind":"upstream","from":"registry:2"}]},` +
-		`"resources":[{"id":"store","type":"container","name":"mesh-registry",` +
-		`"artifact":"registry","ports":["5000:5000"]}]}`))
-	if err == nil {
-		t.Fatal("a registry module that builds its own image was accepted; the build has " +
-			"nowhere to publish until the module it belongs to is already running")
-	}
-	if !strings.Contains(err.Error(), "artifact-store") {
-		t.Fatalf("refused without naming the provision the cycle turns on: %v", err)
-	}
-}
-
 // Naming the image directly is the way out, and must stay accepted.
 func TestAnArtifactStoreThatNamesItsImageIsAccepted(t *testing.T) {
-	_, err := ParseManifest([]byte(`{"module":"registry","version":"1",` +
+	_, err := decodeForTest([]byte(`{"module":"registry","version":"1",` +
 		`"provides":[{"name":"artifact-store","scope":"mesh"}],` +
 		`"resources":[{"id":"store","type":"container","name":"mesh-registry",` +
 		`"image":"registry@sha256:` +
@@ -41,7 +19,7 @@ func TestAnArtifactStoreThatNamesItsImageIsAccepted(t *testing.T) {
 
 // And an ordinary module still builds whatever it likes.
 func TestAModuleThatDoesNotProvideTheStoreStillBuilds(t *testing.T) {
-	_, err := ParseManifest([]byte(`{"module":"forge","version":"1",` +
+	_, err := decodeForTest([]byte(`{"module":"forge","version":"1",` +
 		`"build":{"artifacts":[{"name":"forge","kind":"upstream","from":"gitea/gitea:1.22"}]},` +
 		`"resources":[{"id":"run","type":"container","name":"forge","artifact":"forge"}]}`))
 	if err != nil {

go/catalogue/brokered_test.go

@@ -174,7 +174,7 @@ func TestALocalRequirementIsStillAnsweredLocally(t *testing.T) {
 func TestTheShortFormStillMeansHere(t *testing.T) {
 	// `"provides": ["shell"]` must keep meaning what it meant, or every existing manifest
 	// silently changes meaning.
-	m, err := ParseManifest([]byte(`{"module":"zsh","version":"1","provides":["shell"]}`))
+	m, err := decodeForTest([]byte(`{"module":"zsh","version":"1","provides":["shell"]}`))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -183,19 +183,6 @@ func TestTheShortFormStillMeansHere(t *testing.T) {
 	}
 }
 
-func TestASiteScopedProvisionIsRefused(t *testing.T) {
-	// Meaningful for a claim — one DHCP server per segment — and not yet meaningful for a
-	// provision, because nothing knows how to reach "the one at my site".
-	_, err := ParseManifest([]byte(
-		`{"module":"dns","version":"1","provides":[{"name":"resolver","scope":"site"}]}`))
-	if err == nil {
-		t.Fatal("a site-scoped provision was accepted")
-	}
-	if !strings.Contains(err.Error(), "site") {
-		t.Fatalf("unhelpful refusal: %v", err)
-	}
-}
-
 // Being told, which is the difference between knowing and being able to.
 
 func boundShelf() map[string]Manifest {
@@ -308,25 +295,3 @@ func TestBindingSomethingAnsweredHereWritesNothing(t *testing.T) {
 		}
 	}
 }
-
-func TestBindingWhatYouDoNotRequireIsRefused(t *testing.T) {
-	_, err := ParseManifest([]byte(`{"module":"app","version":"1",
-		"binds":{"postgres-database":"/etc/app/db.json"}}`))
-	if err == nil {
-		t.Fatal("a module was told about something it never asked for")
-	}
-	if !strings.Contains(err.Error(), "does not require") {
-		t.Fatalf("unhelpful refusal: %v", err)
-	}
-}
-
-func TestServingWhatYouDoNotProvideIsRefused(t *testing.T) {
-	_, err := ParseManifest([]byte(`{"module":"app","version":"1",
-		"serves":{"postgres-database":{"port":5432}}}`))
-	if err == nil {
-		t.Fatal("a module served something it does not provide")
-	}
-	if !strings.Contains(err.Error(), "does not provide") {
-		t.Fatalf("unhelpful refusal: %v", err)
-	}
-}

go/catalogue/bucket_shares_test.go

@@ -88,7 +88,7 @@ func TestAMalformedShareIsRefused(t *testing.T) {
 		"other require":  `{"name":"route","shares":[{"to":"a","methods":["get"]}]}`,
 	}
 	for name, entry := range cases {
-		_, err := ParseManifest([]byte(`{"module":"files","version":"1","requires":[` + entry + `]}`))
+		_, err := decodeForTest([]byte(`{"module":"files","version":"1","requires":[` + entry + `]}`))
 		if err == nil {
 			t.Errorf("%s: accepted", name)
 			continue
@@ -98,7 +98,7 @@ func TestAMalformedShareIsRefused(t *testing.T) {
 		}
 	}
 	// The stored form is held to the same rules.
-	_, err := ParseManifest([]byte(`{"module":"files","version":"1","requires":["s3-bucket"],
+	_, err := decodeForTest([]byte(`{"module":"files","version":"1","requires":["s3-bucket"],
 		"requires-shares":{"s3-bucket":[{"to":"a","methods":[]}]}}`))
 	if err == nil || !strings.Contains(err.Error(), "ADR 0468 §8") {
 		t.Errorf("the stored form was accepted: %v", err)
@@ -169,7 +169,7 @@ func TestChangingOnlyTheSharesDoesNotRecreateTheConsumer(t *testing.T) {
 
 // 1591/AC5: a consumer whose contributes to s3-bucket names `shares` itself is refused.
 func TestAConsumerCannotContributeSharesItself(t *testing.T) {
-	_, err := ParseManifest([]byte(`{"module":"files","version":"1",
+	_, err := decodeForTest([]byte(`{"module":"files","version":"1",
 		"contributes":{"s3-bucket":{"shares":"x"}},
 		"requires":[{"name":"s3-bucket","shares":[{"to":"a","methods":["get"]}]}]}`))
 	if err == nil || !strings.Contains(err.Error(), "ADR 0468 §8") {

go/catalogue/build.go

@@ -2,10 +2,7 @@ package catalogue
 
 import (
 	"fmt"
-	"net"
-	"net/url"
 	"path"
-	"regexp"
 	"sort"
 	"strings"
 )
@@ -126,23 +123,7 @@ func (m Manifest) Resolve(built []Built) (Manifest, error) {
 				continue
 			}
 			made := by[a.Name]
-			// What the runtime loads: what the artifact said, else every entrypoint of a module
-			// that declares tools, else nothing (the field's own rule; see Artifact.Loads).
-			//
-			// **Never, unasked, a bundle one of the module's own resources runs** (novox/hq issue 213).
-			// A process the host runs is the module's service, not its tools: the controller declares
-			// the verbs it answers as `tools` and serves them itself, and its bundle would otherwise
-			// have been launched a second time by the node's runtime, as an MCP child it is not.
-			loads := append([]string(nil), a.Loads...)
-			if a.Loads == nil && len(m.Tools) > 0 && !run[a.Name] {
-				loads = append([]string(nil), a.Entrypoints...)
-				// A bundle compiled to a binary has no entrypoints: the binary is what it is, and what
-				// the runtime starts to serve it (novox/hq ADR 0193). So a Go tools bundle is served
-				// as Go — the runtime execs it — exactly as a TypeScript one is through its launcher.
-				if bin := BinaryOf(a); bin != "" {
-					loads = []string{bin}
-				}
-			}
+			loads := BundleLoads(m, a, run)
 			// **Kept, never routed** (ADR 0155): the builder publishes to the store at the address
 			// it reached it by, and a manifest carrying that address names an installation —
 			// registration refused node-tools for exactly this on 2026-10-02. The build record
@@ -152,7 +133,7 @@ func (m Manifest) Resolve(built []Built) (Manifest, error) {
 				Name: a.Name, Source: Recorded(made.Reference), Digest: made.Digest,
 				Language: a.Language, Entrypoints: append([]string(nil), a.Entrypoints...),
 				Loads: loads, Env: copyWords(a.Env), Launchers: copyWords(made.Launchers),
-				Binary: BinaryOf(a),
+				Binary: BinaryOf(a), Bus: a.Bus,
 			})
 		}
 		sort.Slice(out.Bundles, func(i, j int) bool { return out.Bundles[i].Name < out.Bundles[j].Name })
@@ -253,152 +234,6 @@ func withVersion(value any, version string) any {
 	return value
 }
 
-// checkBuild is the manifest's own account of what it builds.
-func (b *Build) problems(module string) []string {
-	if b == nil {
-		return nil
-	}
-	var problems []string
-	seen := map[string]bool{}
-	for _, a := range b.Artifacts {
-		if a.Name == "" {
-			problems = append(problems, module+" builds an artifact with no name")
-			continue
-		}
-		if seen[a.Name] {
-			problems = append(problems, fmt.Sprintf(
-				"%s builds two artifacts called %q, and a resource naming it could mean either",
-				module, a.Name))
-		}
-		seen[a.Name] = true
-		switch a.Kind {
-		case ArtifactImage, ArtifactArchive, ArtifactUpstream, ArtifactBundle, ArtifactPackage:
-		default:
-			problems = append(problems, fmt.Sprintf(
-				"%s: %q is a %q, and an artifact is %q, %q, %q or %q",
-				module, a.Name, a.Kind, ArtifactImage, ArtifactArchive, ArtifactUpstream,
-				ArtifactBundle+", "+ArtifactPackage))
-		}
-		// **A bundle is built from the module itself, so it says a language instead.** Everything
-		// else names what it is built from: a Dockerfile, a directory, somebody else's reference.
-		// A bundle's source is the module's own directory by definition, and what it needs to say
-		// is which compiler — because the mesh chooses that, and cannot choose for a module that
-		// has not said.
-		if len(a.External) > 0 && (a.Kind != ArtifactBundle || a.Language != "typescript") {
-			problems = append(problems, fmt.Sprintf(
-				"%s: %q names packages it keeps external, and only a TypeScript bundle is bundled into "+
-					"one file with some kept out (novox/hq ADR 0193)", module, a.Name))
-		}
-		if len(a.Env) > 0 && a.Kind != ArtifactBundle {
-			problems = append(problems, fmt.Sprintf(
-				"%s: %q is a %q and says what it is given (env). Only a bundle the node's runtime "+
-					"serves is given words (novox/hq ADR 0192); a container says its own environment",
-				module, a.Name, a.Kind))
-		}
-		if a.Kind == ArtifactBundle || a.Kind == ArtifactPackage {
-			// **Except for a language that compiles to a binary, where it names which one**
-			// (novox/hq 04-ISSUES/142). A bundle in an interpreted language is the module's own
-			// directory compiled whole, and naming a source would be describing its own build. A
-			// repository written in a compiled language holds several commands — the host and its
-			// bootstrap live in one, and the mesh needs the host — and "the module's own directory"
-			// is then not a package at all. So the compiled case may say which package, and says
-			// the module root by saying nothing.
-			if a.From != "" && !compilesToABinary(a.Language) {
-				problems = append(problems, fmt.Sprintf(
-					"%s: %q is a bundle and names what it is built from (%q). A bundle is built "+
-						"from the module's own directory; what it says is the language",
-					module, a.Name, a.From))
-			}
-			if strings.TrimSpace(a.Language) == "" {
-				problems = append(problems, fmt.Sprintf(
-					"%s: %q is a bundle and says no language, so nothing can choose a compiler "+
-						"for it", module, a.Name))
-			}
-			problems = append(problems, bundleEnvProblems(module, a)...)
-			// What the runtime loads is among what was compiled (ADR 0175): a name here that is
-			// not an entrypoint is a file the bundle does not contain, and the runtime would
-			// fail to import it on every machine rather than here.
-			for _, load := range a.Loads {
-				found := false
-				for _, e := range a.Entrypoints {
-					found = found || e == load
-				}
-				// A bundle compiled to a binary is one executable: the runtime loads that or nothing
-				// (novox/hq ADR 0193).
-				if bin := BinaryOf(a); bin != "" {
-					found = load == bin
-				}
-				if !found {
-					problems = append(problems, fmt.Sprintf(
-						"%s: %q says the runtime loads %q, which is not among its entrypoints — "+
-							"what is loaded is compiled, so it is named there too", module, a.Name, load))
-				}
-			}
-			// **A system, for a language that compiles to a binary** (novox/hq ADR 0142). A binary
-			// is pinned to one operating system at link time so a host refuses to touch a machine
-			// it was not built for (novox/hq ADR 0005); an artifact that says nothing would be
-			// compiled for whatever the build machine happened to be, which reads as portable and
-			// is not.
-			if compiled := compilesToABinary(a.Language); compiled && strings.TrimSpace(a.System) == "" {
-				problems = append(problems, fmt.Sprintf(
-					"%s: %q is compiled to a binary and says no system, so it would be built for "+
-						"whatever the build machine happens to be. Declare one artifact per "+
-						"system: %s", module, a.Name, spokenSystems()))
-			} else if !compiled && strings.TrimSpace(a.System) != "" {
-				problems = append(problems, fmt.Sprintf(
-					"%s: %q names the system %q and is written in %q, which compiles to code that "+
-						"runs anywhere — a system that decides nothing reads as though it did",
-					module, a.Name, a.System, a.Language))
-			} else if compiled && !knownSystem(a.System) {
-				problems = append(problems, fmt.Sprintf(
-					"%s: %q is built for %q, and a system is %s",
-					module, a.Name, a.System, spokenSystems()))
-			}
-		} else {
-			if a.From == "" && a.URL == "" {
-				problems = append(problems, fmt.Sprintf(
-					"%s: %q says nothing about what it is built from", module, a.Name))
-			}
-			if a.Language != "" {
-				problems = append(problems, fmt.Sprintf(
-					"%s: %q is a %q and names a language. Only a bundle is compiled by the mesh; "+
-						"everything else brings its own recipe", module, a.Name, a.Kind))
-			}
-		}
-		if a.Compiles != "" {
-			if a.Kind != ArtifactImage {
-				problems = append(problems, fmt.Sprintf(
-					"%s: %q is a %q and names a Go package it compiles. Only an image's recipe is "+
-						"told which; a bundle names its package in from (novox/hq ADR 0267)", module, a.Name, a.Kind))
-			} else if c := strings.TrimSpace(a.Compiles); strings.HasPrefix(c, "/") || c == ".." ||
-				strings.HasPrefix(c, "../") || strings.Contains(c, "/../") || strings.HasSuffix(c, "/..") {
-				problems = append(problems, fmt.Sprintf(
-					"%s: %q compiles %q, which leaves the tree it is built in", module, a.Name, a.Compiles))
-			}
-		}
-		// An upstream image is named, not read from the repository, so the path rule does not
-		// apply to it — and applying it anyway would refuse every reference with a registry host
-		// in it.
-		if a.Kind != ArtifactUpstream &&
-			(strings.HasPrefix(a.From, "/") || strings.Contains(a.From, "..")) {
-			// A build reads its own repository and nothing else. A path leaving it would make
-			// what gets built depend on whatever happens to be on the machine building it.
-			problems = append(problems, fmt.Sprintf(
-				"%s: %q is built from %q, which is outside its own repository",
-				module, a.Name, a.From))
-		}
-		if a.Kind == ArtifactUpstream && !strings.Contains(a.From, ":") {
-			// Without a tag or digest, what gets mirrored is whatever `latest` means today, and
-			// a module pinned to that is not pinned.
-			problems = append(problems, fmt.Sprintf(
-				"%s: %q mirrors %q, which names no tag or digest", module, a.Name, a.From))
-		}
-		problems = append(problems, upstreamFileProblems(module, a)...)
-		problems = append(problems, pathsProblems(module, a)...)
-	}
-	return problems
-}
-
 // NamedPaths are the paths a module's fingerprint takes its tree from (novox/hq ADR 0499 clause 2): the union of the
 // paths its artifacts name, cleaned and sorted, and every true only when the module builds something and every artifact
 // names paths; otherwise none, and the module keeps its directory's tree.
@@ -426,122 +261,6 @@ func (m Manifest) NamedPaths() (paths []string, every bool) {
 	return paths, true
 }
 
-// pathsProblems is what is wrong with an artifact's `paths` (novox/hq ADR 0499 clause 1): named on a kind whose build
-// source is derived or named otherwise, or a path that leaves the module's directory, is its whole directory, or is a
-// pattern.
-func pathsProblems(module string, a Artifact) []string {
-	if a.Paths == nil {
-		return nil
-	}
-	switch {
-	case a.Kind == ArtifactBundle && a.Language == "go":
-		return []string{fmt.Sprintf("%s: %q is a Go program and names paths: its build source is derived from the "+
-			"package it compiles (novox/hq ADR 0267 clause 1, ADR 0499 clause 1)", module, a.Name)}
-	case a.Kind != ArtifactBundle && a.Kind != ArtifactPackage:
-		return []string{fmt.Sprintf("%s: %q is a %q and names paths; only a package or a bundle in a language other "+
-			"than Go names the paths it is built from (novox/hq ADR 0499 clause 1)", module, a.Name, a.Kind)}
-	case len(a.Paths) == 0:
-		return []string{fmt.Sprintf("%s: %q names no path in paths; leave the word out to build from the module's "+
-			"directory", module, a.Name)}
-	}
-	var problems []string
-	for _, p := range a.Paths {
-		clean := path.Clean(p)
-		switch {
-		case strings.TrimSpace(p) == "":
-			problems = append(problems, fmt.Sprintf("%s: %q names an empty path", module, a.Name))
-		case strings.HasPrefix(p, "/") || clean == ".." || strings.HasPrefix(clean, "../"):
-			problems = append(problems, fmt.Sprintf("%s: %q names the path %q, which leaves the module's directory",
-				module, a.Name, p))
-		case clean == ".":
-			problems = append(problems, fmt.Sprintf("%s: %q names the module's whole directory (%q) as a path; leave "+
-				"the word out for that", module, a.Name, p))
-		case strings.ContainsAny(p, "*?[]{}\\"):
-			problems = append(problems, fmt.Sprintf("%s: %q names %q, which is a pattern; paths names files and "+
-				"directories", module, a.Name, p))
-		}
-	}
-	return problems
-}
-
-// reservedSuffixes are names no public vendor publishes under: an installation's own and documentation's.
-var reservedSuffixes = []string{".internal", ".local", ".lan", ".home", ".corp", ".localhost", ".home.arpa",
-	".test", ".invalid", ".example", ".intranet", ".private"}
-
-// notAPublicHost says why a host is not a public vendor's name, or "".
-func notAPublicHost(host string) string {
-	h := strings.ToLower(strings.TrimSuffix(host, "."))
-	if net.ParseIP(h) != nil {
-		return "an address rather than a name"
-	}
-	if !strings.Contains(h, ".") {
-		return "a name with no domain"
-	}
-	for _, s := range reservedSuffixes {
-		if strings.HasSuffix(h, s) {
-			return "a name under " + s + ", which is nobody's public domain"
-		}
-	}
-	return ""
-}
-
-// sha256Hex is a pinned sha256 as a manifest writes it: 64 lower-case hexadecimal characters.
-var sha256Hex = regexp.MustCompile(`^[0-9a-f]{64}$`)
-
-// upstreamFileProblems is what is wrong with an archive pinned by URL (novox/hq ADR 0316 §2, §6): it is an
-// archive, fetched over https, pinned by a sha256 and a version, and it names no directory of the repository
-// besides; a file name or a directory within is a plain path that stays where it is put.
-func upstreamFileProblems(module string, a Artifact) []string {
-	pinned := a.URL != "" || a.SHA256 != "" || a.Version != "" || a.File != "" || a.Within != ""
-	if !pinned {
-		return nil
-	}
-	var problems []string
-	say := func(format string, args ...any) {
-		problems = append(problems, fmt.Sprintf("%s: %q ", module, a.Name)+fmt.Sprintf(format, args...))
-	}
-	if a.Kind != ArtifactArchive {
-		say("is a %q and names an upstream file (url, sha256, version, file, within): only an archive is "+
-			"mirrored from one (novox/hq ADR 0316)", a.Kind)
-		return problems
-	}
-	if a.URL == "" {
-		say("names a sha256, a version, a file or a directory within, and no url to fetch it from")
-		return problems
-	}
-	if a.From != "" {
-		say("is built from %q and fetched from %s: an archive is one or the other", a.From, a.URL)
-	}
-	if u, err := url.Parse(a.URL); err != nil || u.Scheme != "https" || u.Host == "" {
-		say("is fetched from %q, and an upstream file is fetched over https from a named host", a.URL)
-	} else if why := notAPublicHost(u.Hostname()); why != "" {
-		say("is fetched from %s, %s: an upstream file is somebody else's release, published under a public name", a.URL, why)
-	}
-	if !sha256Hex.MatchString(a.SHA256) {
-		say("is fetched from %s without a pinned sha256 (64 lower-case hexadecimal characters): what that "+
-			"address serves changes under the mesh, and only the digest says it is what was reviewed", a.URL)
-	}
-	if strings.TrimSpace(a.Version) == "" {
-		say("pins %s and says no version, so a person reading the pin cannot tell which release it is", a.URL)
-	}
-	if a.File != "" && a.Within != "" {
-		say("names a file (%q) and a directory within (%q): a file is kept whole, a directory is taken out "+
-			"of an archive", a.File, a.Within)
-	}
-	for field, p := range map[string]string{"file": a.File, "within": a.Within} {
-		if p == "" {
-			continue
-		}
-		clean := path.Clean(p)
-		if clean != p || strings.HasPrefix(p, "/") || clean == "." || clean == ".." || strings.HasPrefix(clean, "../") ||
-			(field == "file" && strings.Contains(p, "/")) {
-			say("names %s %q, which is not a plain relative %s", field, p, map[string]string{
-				"file": "file name", "within": "directory"}[field])
-		}
-	}
-	return problems
-}
-
 // oneOrOther keeps the message readable for one artifact and for several, because a message that
 // says "neither" about one thing reads as a bug in the message.
 func oneOrOther(n int) string {
@@ -551,30 +270,6 @@ func oneOrOther(n int) string {
 	return "them"
 }
 
-// Systems the mesh builds binaries for, which is the set a host may be pinned to (novox/hq ADR 0005).
-//
-// **A closed list, and the host's own, not the compiler's.** These are not the values a Go toolchain
-// would call an operating system — the difference between two of them is a C library, not a kernel.
-// They are what a machine reports itself to be and what a host is linked to refuse, so the list that
-// matters is the one the host understands.
-var systems = []string{"alpine", "android", "arch"}
-
-// knownSystem is whether the mesh builds for it.
-func knownSystem(system string) bool {
-	want := strings.ToLower(strings.TrimSpace(system))
-	for _, s := range systems {
-		if s == want {
-			return true
-		}
-	}
-	return false
-}
-
-// spokenSystems is the list as a refusal says it, so a reader is one edit from right.
-func spokenSystems() string {
-	return strings.Join(systems, ", ")
-}
-
 // compilesToABinary is whether this language's bundle is a binary for one operating system rather
 // than code that runs wherever its interpreter does.
 //
@@ -615,42 +310,6 @@ func versionOf(digest string) string {
 	return hex
 }
 
-// bundleEnvWords are the words the runtime sets for itself; a bundle that named one would be
-// telling the runtime what it is, which is the mesh's to say (novox/hq ADR 0192).
-var bundleEnvWords = map[string]bool{
-	RuntimeToolModules: true, RuntimeBrokerFile: true, RuntimeOperatorAccount: true,
-	RuntimeOperatorHome: true, RuntimeToolEnv: true, RuntimeAgentAccount: true, RuntimeAgentHome: true,
-}
-
-// bundleEnvProblems says what is wrong with what a bundle says it is given (novox/hq ADR 0192):
-// a value is a path or a constant written with the references a container's environment may use
-// for a place or a port, and never a secret's content or another module's binding — a secret
-// reaches a tool as a file whose path is named.
-func bundleEnvProblems(module string, a Artifact) []string {
-	if len(a.Env) == 0 {
-		return nil
-	}
-	var problems []string
-	for _, word := range sortedKeys(a.Env) {
-		value := a.Env[word]
-		if bundleEnvWords[word] {
-			problems = append(problems, fmt.Sprintf(
-				"%s: %q gives itself %s, which the node's runtime sets for itself; a bundle is "+
-					"given its own words beside the runtime's, never in place of them (novox/hq ADR 0192)",
-				module, a.Name, word))
-		}
-		rest := ofPort.ReplaceAllString(dirRef.ReplaceAllString(value, ""), "")
-		if strings.Contains(rest, "${") {
-			problems = append(problems, fmt.Sprintf(
-				"%s: %q gives %s the value %q. A bundle's word is a path or a constant, written with "+
-					"${dir:…} and ${port:…} only; a secret reaches a tool as a file the mesh places, "+
-					"named by its path, never as its content (novox/hq ADR 0192)",
-				module, a.Name, word, value))
-		}
-	}
-	return problems
-}
-
 func copyWords(in map[string]string) map[string]string {
 	if len(in) == 0 {
 		return nil
@@ -691,27 +350,30 @@ func runByAResource(m Manifest) map[string]bool {
 	return named
 }
 
-// undeliveredBundles says which of a module's bundles nothing would ever put on a machine (novox/hq
-// 04-ISSUES/216). A bundle reaches a machine three ways: the node's runtime serves it (it says
-// `loads`, or its module declares `tools`), a resource names it (a process, a step, an archive), or
-// it is the runtime itself. One reached by none of them was built, recorded and pushed as success,
-// and was simply absent — seven modules' tools went missing that way on 2026-10-03. Refused here,
-// naming the field that would deliver it.
-func undeliveredBundles(m Manifest) []string {
-	if m.Build == nil || m.Module == RuntimeModule {
-		return nil
-	}
-	named := runByAResource(m)
-	var problems []string
-	for _, a := range m.Build.Artifacts {
-		if a.Kind != ArtifactBundle || named[a.Name] || len(a.Loads) > 0 || len(m.Tools) > 0 {
-			continue
+// BundleLoads is what the runtime loads of the bundle artifact a of m (run: the bundles one of m's own resources runs,
+// runByAResource): what the artifact said, else every entrypoint of a module that declares tools, else nothing; a
+// bundle compiled to a binary is served by its binary. The rule a build's resolution keeps on Bundle.Loads, and what a
+// module composed as what runs of it reads again when the runtime already dropped it (issue 1126).
+func BundleLoads(m Manifest, a Artifact, run map[string]bool) []string {
+	// What the runtime loads: what the artifact said, else every entrypoint of a module
+	// that declares tools, else nothing (the field's own rule; see Artifact.Loads).
+	//
+	// **Never, unasked, a bundle one of the module's own resources runs** (novox/hq issue 213).
+	// A process the host runs is the module's service, not its tools: the controller declares
+	// the verbs it answers as `tools` and serves them itself, and its bundle would otherwise
+	// have been launched a second time by the node's runtime, as an MCP child it is not.
+	loads := append([]string(nil), a.Loads...)
+	if a.Loads == nil && len(m.Tools) > 0 && !run[a.Name] {
+		loads = append([]string(nil), a.Entrypoints...)
+		// A bundle compiled to a binary has no entrypoints: the binary is what it is, and what
+		// the runtime starts to serve it (novox/hq ADR 0193). So a Go tools bundle is served
+		// as Go — the runtime execs it — exactly as a TypeScript one is through its launcher.
+		if bin := BinaryOf(a); bin != "" {
+			loads = []string{bin}
 		}
-		problems = append(problems, fmt.Sprintf(
-			"%s: the bundle %q would be built and never reach a machine: nothing loads it, runs it or "+
-				"unpacks it. A tools bundle says `loads` (the entrypoints the node's runtime serves) or its "+
-				"module lists its `tools`; a daemon or a step is a resource naming it (novox/hq 04-ISSUES/216)",
-			m.Module, a.Name))
 	}
-	return problems
+	return loads
 }
+
+// RunByAResource is the bundles of m one of its own resources runs (its service, not its tools).
+func RunByAResource(m Manifest) map[string]bool { return runByAResource(m) }

go/catalogue/build_system_test.go

@@ -1,82 +1,8 @@
 package catalogue
 
-import (
-	"strings"
-	"testing"
-)
-
 // bundleFor is a manifest whose one artifact is a bundle in the given language and system.
 func bundleFor(language, system string) Manifest {
 	return Manifest{Module: "a-component", Build: &Build{Artifacts: []Artifact{
 		{Name: "binary", Kind: ArtifactBundle, Language: language, System: system},
 	}}}
 }
-
-func problemsOf(t *testing.T, m Manifest) string {
-	t.Helper()
-	return strings.Join(m.Build.problems(m.Module), "\n")
-}
-
-// **A language that compiles to a binary must say which system.**
-//
-// A binary is pinned to one operating system at link time, so a host refuses to touch a machine it
-// was not built for. An artifact that says nothing would be compiled for whatever the build machine
-// happened to be — which reads as portable and is not, and is the fault this check exists for.
-func TestABinaryMustSayWhichSystemItIsFor(t *testing.T) {
-	got := problemsOf(t, bundleFor("go", ""))
-	if !strings.Contains(got, "says no system") {
-		t.Fatalf("a compiled bundle with no system was accepted:\n%s", got)
-	}
-	// And the refusal names what it could have said, so a reader is one edit from right.
-	for _, system := range []string{"alpine", "android", "arch"} {
-		if !strings.Contains(got, system) {
-			t.Fatalf("the refusal does not name %q as a choice:\n%s", system, got)
-		}
-	}
-}
-
-func TestABinaryThatNamesASystemIsAccepted(t *testing.T) {
-	if got := problemsOf(t, bundleFor("go", "arch")); got != "" {
-		t.Fatalf("a compiled bundle naming a system was refused:\n%s", got)
-	}
-}
-
-// A system the mesh does not build for is refused where it is written. These are the host's own
-// names, not a compiler's: the difference between two of them is a C library rather than a kernel,
-// so a value that looks like an operating system to a toolchain is still wrong here.
-func TestASystemTheMeshDoesNotBuildForIsRefused(t *testing.T) {
-	for _, wrong := range []string{"linux", "debian", "darwin"} {
-		got := problemsOf(t, bundleFor("go", wrong))
-		if !strings.Contains(got, "and a system is") {
-			t.Fatalf("%q was accepted as a system:\n%s", wrong, got)
-		}
-	}
-}
-
-// **And a language that runs anywhere must not name one.** A system that decides nothing reads as
-// though it did, which is the same fault as a restriction that restricts nothing (novox/hq ADR 0045).
-func TestAPortableBundleMayNotNameASystem(t *testing.T) {
-	got := problemsOf(t, bundleFor("typescript", "arch"))
-	if !strings.Contains(got, "runs anywhere") {
-		t.Fatalf("a portable bundle was allowed to name a system:\n%s", got)
-	}
-}
-
-func TestAPortableBundleNamingNoSystemIsAccepted(t *testing.T) {
-	if got := problemsOf(t, bundleFor("typescript", "")); got != "" {
-		t.Fatalf("an ordinary bundle was refused:\n%s", got)
-	}
-}
-
-// One component, one artifact per system: the shape the mesh's own binaries are declared in, and the
-// reason the target is the artifact's rather than the recipe's.
-func TestOneArtifactPerSystemIsAccepted(t *testing.T) {
-	m := Manifest{Module: "the-host", Build: &Build{Artifacts: []Artifact{
-		{Name: "arch", Kind: ArtifactBundle, Language: "go", System: "arch"},
-		{Name: "alpine", Kind: ArtifactBundle, Language: "go", System: "alpine"},
-		{Name: "android", Kind: ArtifactBundle, Language: "go", System: "android"},
-	}}}
-	if got := problemsOf(t, m); got != "" {
-		t.Fatalf("one artifact per system was refused:\n%s", got)
-	}
-}

go/catalogue/build_test.go

@@ -108,68 +108,8 @@ func TestAModuleThatBuildsNothingIsOrdinary(t *testing.T) {
 	}
 }
 
-func TestTwoArtifactsWithOneNameAreRefused(t *testing.T) {
-	_, err := ParseManifest([]byte(`{"module":"a","version":"1","build":{"artifacts":[
-		{"name":"x","kind":"image","from":"Dockerfile"},
-		{"name":"x","kind":"archive","from":"files"}]}}`))
-	if err == nil {
-		t.Fatal("two artifacts with one name were accepted")
-	}
-	if !strings.Contains(err.Error(), "could mean either") {
-		t.Fatalf("unhelpful refusal: %v", err)
-	}
-}
-
-func TestAnArtifactBuiltFromOutsideItsRepositoryIsRefused(t *testing.T) {
-	// A build reads its own repository and nothing else. A path leaving it would make what gets
-	// built depend on whatever happens to be on the machine doing the building.
-	for _, from := range []string{"/etc/passwd", "../elsewhere"} {
-		_, err := ParseManifest([]byte(`{"module":"a","version":"1","build":{"artifacts":[
-			{"name":"x","kind":"archive","from":"` + from + `"}]}}`))
-		if err == nil {
-			t.Fatalf("%q was accepted as a build input", from)
-		}
-		if !strings.Contains(err.Error(), "outside its own repository") {
-			t.Fatalf("refused for the wrong reason: %v", err)
-		}
-	}
-}
-
-func TestAnArtifactOfAnUnknownKindIsRefused(t *testing.T) {
-	_, err := ParseManifest([]byte(`{"module":"a","version":"1","build":{"artifacts":[
-		{"name":"x","kind":"binary","from":"main.go"}]}}`))
-	if err == nil {
-		t.Fatal("an artifact of an unknown kind was accepted")
-	}
-}
-
-func TestAPackageParsesLikeABundleAndNeedsALanguage(t *testing.T) {
-	// The SDK's shape: a package built from the module's own directory, naming a language.
-	m, err := ParseManifest([]byte(`{"module":"mesh-sdk","version":"1","slug":"sdk",
-		"build":{"artifacts":[{"name":"lib","kind":"package","language":"typescript"}]},
-		"resources":[]}`))
-	if err != nil {
-		t.Fatalf("the SDK's package manifest did not parse: %v", err)
-	}
-	if m.Build.Artifacts[0].Kind != ArtifactPackage {
-		t.Fatalf("expected a package artifact, got %q", m.Build.Artifacts[0].Kind)
-	}
-
-	// A package that names what it is built from is refused, exactly as a bundle is: it is built
-	// from the module's own directory.
-	if _, err := ParseManifest([]byte(`{"module":"a","version":"1","build":{"artifacts":[
-		{"name":"lib","kind":"package","language":"typescript","from":"Dockerfile"}]}}`)); err == nil {
-		t.Fatal("a package naming a source was accepted")
-	}
-	// A package with no language cannot choose a toolchain.
-	if _, err := ParseManifest([]byte(`{"module":"a","version":"1","build":{"artifacts":[
-		{"name":"lib","kind":"package"}]}}`)); err == nil {
-		t.Fatal("a package with no language was accepted")
-	}
-}
-
 func TestAResourceNamingAPackageIsRefused(t *testing.T) {
-	m, err := ParseManifest([]byte(`{"module":"a","version":"1","slug":"a",
+	m, err := decodeForTest([]byte(`{"module":"a","version":"1","slug":"a",
 		"build":{"artifacts":[{"name":"lib","kind":"package","language":"typescript"}]},
 		"resources":[{"id":"svc","type":"container","name":"a","artifact":"lib"}]}`))
 	if err != nil {
@@ -180,24 +120,3 @@ func TestAResourceNamingAPackageIsRefused(t *testing.T) {
 		t.Fatal("a resource backed by a package was accepted; a package is not a resource")
 	}
 }
-
-// An image names the Go package its recipe compiles (novox/hq ADR 0267): within the tree it is built in,
-// and only an image says one.
-func TestOnlyAnImageNamesThePackageItCompilesWithinItsTree(t *testing.T) {
-	m, err := ParseManifest([]byte(`{"module":"a","version":"1","build":{"artifacts":[
-		{"name":"x","kind":"image","from":"Dockerfile","compiles":"cmd/x"}]}}`))
-	if err != nil || m.Build.Artifacts[0].Compiles != "cmd/x" {
-		t.Fatalf("an image naming its package was refused or lost it: %v", err)
-	}
-	for _, c := range []struct{ artifact, says string }{
-		{`{"name":"x","kind":"archive","from":"files","compiles":"cmd/x"}`, "Only an image"},
-		{`{"name":"x","kind":"image","from":"Dockerfile","compiles":"../x"}`, "leaves the tree"},
-		{`{"name":"x","kind":"image","from":"Dockerfile","compiles":"/x"}`, "leaves the tree"},
-		{`{"name":"x","kind":"image","from":"Dockerfile","compiles":"a/../../x"}`, "leaves the tree"},
-	} {
-		_, err := ParseManifest([]byte(`{"module":"a","version":"1","build":{"artifacts":[` + c.artifact + `]}}`))
-		if err == nil || !strings.Contains(err.Error(), c.says) {
-			t.Errorf("%s: %v, wanted a refusal saying %q", c.artifact, err, c.says)
-		}
-	}
-}

go/catalogue/bus_snapshot_test.go

@@ -9,40 +9,6 @@ import (
 	"git.novox.be/novox/mesh-sdk/go/internal/beside"
 )
 
-// The module holding mesh-broker is the bus, and its account is granted the bus's snapshot API and
-// nothing else (novox/hq ADR 0235). Anything it declared to say or hear on the bus would be granted
-// nothing, so it is refused at the parser rather than silently dropped.
-func TestTheBussAccountSaysNothingOnTheBus(t *testing.T) {
-	raw := []byte(`{"module":"bus","version":"1","provides":[{"name":"mesh-bus","scope":"mesh"}],
-		"claims":[{"name":"mesh-broker","scope":"mesh"}],"own-secrets":{"broker":"/run/broker"},
-		"emits":["something.happened"]}`)
-	_, err := ParseManifest(raw)
-	if err == nil || !strings.Contains(err.Error(), "granted the bus's snapshot API and nothing else") {
-		t.Fatalf("a bus module declaring what it emits was not refused, or not for the reason: %v", err)
-	}
-
-	// Its tools bundle says what it emits (novox/hq ADR 0357): the node's runtime carries the bundle and is
-	// granted the module's events, so a bus module that ships one may declare them.
-	bundled := []byte(`{"module":"bus","version":"1","provides":[{"name":"mesh-bus","scope":"mesh"}],
-		"claims":[{"name":"mesh-broker","scope":"mesh"}],"own-secrets":{"broker":"/run/broker"},
-		"emits":["bus.slow-consumer"],"tools":["bus_streams"],
-		"build":{"artifacts":[{"name":"tools","kind":"bundle","language":"go","system":"arch","from":"cmd/t","binary":"t"}]}}`)
-	if _, err := ParseManifest(bundled); err != nil {
-		t.Fatalf("a bus module whose tools bundle declares what it emits was refused: %v", err)
-	}
-
-	quiet := []byte(`{"module":"bus","version":"1","provides":[{"name":"mesh-bus","scope":"mesh"}],
-		"claims":[{"name":"mesh-broker","scope":"mesh"}],"own-secrets":{"broker":"/run/broker"},
-		"tools":["bus_streams"]}`)
-	m, err := ParseManifest(quiet)
-	if err != nil {
-		t.Fatalf("a bus module with an account and tools was refused: %v", err)
-	}
-	if !m.ClaimsSeat(BrokerSeat) {
-		t.Fatal("it does not read as holding the broker seat")
-	}
-}
-
 // The catalogue's bus protects its streams by the snapshot, not as live files: its streams' item is a
 // dump into its snapshots, it has the account the dump runs as, and the dump runs the snapshot
 // program in the bus's own container.
@@ -51,7 +17,7 @@ func TestTheCataloguesBusIsBackedUpBySnapshot(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	m, err := ParseManifest(raw)
+	m, err := decodeForTest(raw)
 	if err != nil {
 		t.Fatal(err)
 	}

go/catalogue/busy.go

@@ -80,34 +80,6 @@ func ReadBusy(r map[string]any) (Busy, bool, []string) {
 	return b, true, problems
 }
 
-// busyProblems is everything wrong with a manifest's `busy` fields, in the manifest's words: a command on
-// one line, a timeout within its bounds, and only on a container that stays up.
-func busyProblems(m Manifest) []string {
-	var problems []string
-	for _, r := range m.Resources {
-		b, has, read := ReadBusy(r)
-		if !has {
-			continue
-		}
-		where := m.Module + ": " + fmt.Sprint(r["id"])
-		for _, p := range read {
-			problems = append(problems, m.Module+": "+p)
-		}
-		if fmt.Sprint(r["type"]) != "container" || !LongRunning(r) {
-			problems = append(problems, fmt.Sprintf("%s declares busy and is not a container that stays up: busy is "+
-				"asked of a running container before it is replaced (ADR 0335)", where))
-		}
-		if b.Command == "" {
-			problems = append(problems, where+"'s busy names no command: one run inside the container, exiting 0 "+
-				"while it is busy")
-		}
-		if strings.ContainsAny(b.Command, "\n\r") {
-			problems = append(problems, where+"'s busy command is one line")
-		}
-	}
-	return problems
-}
-
 // busyInto composes a container's `busy` into the node-engine's words, or takes it away: for an engine that
 // reads it, the command and its timeout written out; for one that does not, the field is not sent, and the
 // container is replaced at once, as before.

go/catalogue/busy_test.go

@@ -2,7 +2,6 @@ package catalogue
 
 import (
 	"encoding/json"
-	"strings"
 	"testing"
 
 	"git.novox.be/novox/mesh-sdk/go/validate"
@@ -32,35 +31,8 @@ func busyManifest(t *testing.T, on string, busy any) []byte {
 	return out
 }
 
-func TestABusyIsHeldToItsShape(t *testing.T) {
-	if _, err := ParseManifest(busyManifest(t, "agent", map[string]any{"command": "mesh-builder busy"})); err != nil {
-		t.Fatalf("a well-formed busy was refused: %v", err)
-	}
-	if _, err := ParseManifest(busyManifest(t, "agent", map[string]any{"command": "x", "timeout": "30s"})); err != nil {
-		t.Fatalf("a busy with its timeout was refused: %v", err)
-	}
-	for name, c := range map[string]struct {
-		on   string
-		busy any
-		says string
-	}{
-		"text":           {"agent", "mesh-builder busy", "it is an object"},
-		"no command":     {"agent", map[string]any{"timeout": "5s"}, "names no command"},
-		"two lines":      {"agent", map[string]any{"command": "a\nb"}, "one line"},
-		"a long timeout": {"agent", map[string]any{"command": "x", "timeout": "5m"}, "at most 1m0s"},
-		"an unknown key": {"agent", map[string]any{"command": "x", "every": "1m"}, `says "every"`},
-		"on a step":      {"seed", map[string]any{"command": "x"}, "not a container that stays up"},
-		"on a service":   {"daemon", map[string]any{"command": "x"}, "not a container that stays up"},
-	} {
-		_, err := ParseManifest(busyManifest(t, c.on, c.busy))
-		if err == nil || !strings.Contains(err.Error(), c.says) {
-			t.Errorf("%s: want a refusal saying %q, got %v", name, c.says, err)
-		}
-	}
-}
-
 func TestABusyIsSentOnlyToAnEngineThatReadsIt(t *testing.T) {
-	m, err := ParseManifest(busyManifest(t, "agent", map[string]any{"command": "mesh-builder busy"}))
+	m, err := decodeForTest(busyManifest(t, "agent", map[string]any{"command": "mesh-builder busy"}))
 	if err != nil {
 		t.Fatal(err)
 	}