Pin mesh-sdk at the group's head acbf80a in every module the group touches, so the provisioner carries what a consumer contributes and route-proxy keeps its routes; count a removal confirmed only when the bus says the stream or consumer is not found (issue 774)

endStaleAsks skipped every merged delivery, so a pull request merged without the
Approve kept its merge ask in the gate's asks until it lapsed: on 2026-10-31 two
such asks held two of the router's three places for the teller and a placement
ask was refused for want of room. Every look now takes away a standing ask none of
whose deliveries is still open, read from what the gate keeps, so a failed take
away is retried. A settle asked again for another set takes the earlier settle ask
away for the same reason.

.gitignore

@@ -14,6 +14,7 @@ modules/claude-code/claude-code
 modules/mesh-watcher/mesh-watcher
 modules/dnsmasq/dnsmasq
 modules/mesh-issues/cmd/mesh-issues/mesh-issues
+modules/mesh-issues/mesh-issues
 modules/mounts/cmd/mounts/mounts
 modules/mesh-knowledge/cmd/mesh-knowledge/mesh-knowledge
 modules/mesh-knowledge/mesh-knowledge
@@ -28,3 +29,15 @@ modules/brother/cmd/brother/brother
 modules/mesh-build-go/cmd/mesh-build-go/mesh-build-go
 modules/mesh-config/mesh-config
 modules/mesh-build-image/cmd/mesh-build-image/mesh-build-image
+*.test
+
+# binaries a local go build leaves in a module root
+/checks/paths/paths
+/modules/mesh-build-go/mesh-build-go
+/modules/mesh-delivery-gate/mesh-delivery-gate
+modules/mesh-config/cmd/mesh-config/mesh-config
+
+# Built by their modules' build step (issue 1577), never committed.
+modules/forticlient/cmd/forticlient-tools/forticlient-tools
+modules/networkmanager/uplink-tools
+checks/words/words

checks/agenthome/reads-outside

@@ -0,0 +1,5 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# Check("../.."): every manifest.
+modules/*/module.json

checks/config/go.mod

@@ -1,3 +1,7 @@
 module git.novox.be/novox/mesh-catalog/checks/config
 
 go 1.22
+
+require git.novox.be/novox/mesh-catalog/checks/trunk v0.0.0
+
+replace git.novox.be/novox/mesh-catalog/checks/trunk => ../trunk

checks/config/main.go

@@ -110,7 +110,7 @@ func Check(root string) (map[string][]string, error) {
 // The modules taking a whole layer were found after the list was first written and before the trunk held a copy
 // (issue 735), so they stand in it too.
 var seed = map[string]bool{
-	"betterbird": true, "fail2ban": true, "influxdb": true, "keycloak": true, "mailu": true, "searxng": true,
+	"fail2ban": true, "influxdb": true, "keycloak": true, "mailu": true, "searxng": true,
 	"baserow": true, "confluence": true, "gitea": true, "gitlab": true, "grafana": true, "home-assistant": true,
 	"icecast": true, "jira": true, "letta": true, "matrix": true, "nodered": true, "supabase": true, "unifi": true,
 }

checks/config/reads-outside

@@ -0,0 +1,5 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# Check("../.."): every manifest and the files it names.
+modules

checks/config/realtree_test.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"path/filepath"
+	"testing"
+
+	"git.novox.be/novox/mesh-catalog/checks/trunk"
+)
+
+// The script's comparison of this list with the trunk's (novox/hq ADR 0529 clause 2): the list of modules not yet moved gains none
+// the trunk's copy at the merge base does not hold. The catalogue itself is judged against the list by
+// TestTheCatalogueSaysConfigInEveryMovedModule. Skipped, and said, where no trunk is beside.
+func TestTheUnmovedListHoldsNoModuleTheTrunksDoesNot(t *testing.T) {
+	path, ok := trunk.Copy(t, "checks/config/unmoved")
+	found, err := Check(filepath.Join("..", ".."))
+	if err != nil {
+		t.Fatal(err)
+	}
+	unmoved, err := Unmoved("unmoved")
+	if err != nil {
+		t.Fatal(err)
+	}
+	base := seed
+	if ok {
+		if base, err = Unmoved(path); err != nil {
+			t.Fatal(err)
+		}
+	}
+	_, _, added := Judge(found, unmoved, base)
+	for _, m := range added {
+		t.Errorf("checks/config/unmoved gains %s, which the trunk's copy does not hold: the list only shrinks", m)
+	}
+}

checks/credentialform/go.mod

@@ -0,0 +1,5 @@
+module checks/credentialform
+
+go 1.26.0
+
+require git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261030001116-2da0de75c3f0

checks/credentialform/go.sum

@@ -0,0 +1,2 @@
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261030001116-2da0de75c3f0 h1:lKU3HjNXGiVbLW2hUgFjU/TMTUYMlNnnmZxG5T7biQA=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261030001116-2da0de75c3f0/go.mod h1:ouERNpZizzwZ0HLEtAypsY9FR20FyUgUYRni6J7kVCY=

checks/credentialform/main.go

@@ -0,0 +1,96 @@
+// Package credentialform refuses an offer that does not say the form of its credential: an own secret, an issuer, or
+// `form` pair or none (the lead, 2026-10-29). It reads every modules/*/module.json through mesh-sdk's
+// CredentialFormProblems.
+//
+// It refuses a route received as a file too (issue 774, research 072 row 34, the operator on 2026-10-31: "there is only
+// 1 path, the other is simply deprecated/invalid"): a route is a provision, served from the seat mesh-provisioner's
+// plans alone, and a manifest's `receives.route` is the deprecated path. A module still moving off it is listed in
+// stillReceivingRoutes with why; every refusal names them all, and a listed module that no longer receives one is
+// refused too, so the list only shrinks.
+package credentialform
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+
+	"git.novox.be/novox/mesh-sdk/go/catalogue"
+)
+
+// Problems is every offer of the manifests under root/modules that says no credential form, one line each.
+func Problems(root string) ([]string, error) {
+	files, err := filepath.Glob(filepath.Join(root, "modules", "*", "module.json"))
+	if err != nil {
+		return nil, err
+	}
+	sort.Strings(files)
+	var out []string
+	var receiving []string
+	reads := map[string]bool{}
+	var binders []string
+	for _, f := range files {
+		raw, err := os.ReadFile(f)
+		if err != nil {
+			return nil, err
+		}
+		var m catalogue.Manifest
+		if err := json.Unmarshal(raw, &m); err != nil {
+			return nil, fmt.Errorf("%s: %w", f, err)
+		}
+		out = append(out, catalogue.CredentialFormProblems(m)...)
+		if _, received := m.Receives["route"]; received {
+			receiving = append(receiving, m.Module)
+		} else if _, listed := stillReceivingRoutes[m.Module]; listed {
+			out = append(out, fmt.Sprintf("%s no longer receives route; take it off stillReceivingRoutes", m.Module))
+		}
+		var kept struct {
+			Reads []string          `json:"reads"`
+			State []json.RawMessage `json:"state"`
+		}
+		_ = json.Unmarshal(raw, &kept) // reads may hold objects in another module; only the provisioner's are read
+		if m.Module == "mesh-provisioner" {
+			for _, r := range kept.Reads {
+				reads[r] = true
+			}
+		}
+		if len(m.Provides) > 0 && keepsBound(kept.State) {
+			binders = append(binders, m.Module)
+		}
+	}
+	for _, module := range binders {
+		if !reads[module+".bound"] {
+			out = append(out, fmt.Sprintf("%s provides and keeps a `bound` state, and mesh-provisioner's manifest does not read %s.bound", module, module))
+		}
+	}
+	for _, module := range receiving {
+		if _, listed := stillReceivingRoutes[module]; !listed {
+			out = append(out, fmt.Sprintf("%s receives route as a file: a route is a provision, served from the seat "+
+				"mesh-provisioner's plans alone (issue 774); still on the deprecated path: %s", module,
+				strings.Join(receiving, ", ")))
+		}
+	}
+	return out, nil
+}
+
+// stillReceivingRoutes is every module still receiving its routes as a file, and why it has not moved yet.
+var stillReceivingRoutes = map[string]string{
+	"route-adapter": "migration scaffolding writing into a predecessor's proxy (novox/hq ADR 0104), deleted when that " +
+		"migration ends; it reads the received file its TypeScript adapter turns into the predecessor's route files",
+}
+
+// keepsBound says whether a manifest's `state` names `bound`, as a plain name or an object with a name.
+func keepsBound(state []json.RawMessage) bool {
+	for _, s := range state {
+		var name string
+		var obj struct {
+			Name string `json:"name"`
+		}
+		if json.Unmarshal(s, &name) == nil && name == "bound" || json.Unmarshal(s, &obj) == nil && obj.Name == "bound" {
+			return true
+		}
+	}
+	return false
+}

checks/credentialform/main_test.go

@@ -0,0 +1,54 @@
+package credentialform
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func aCatalogue(t *testing.T, manifests map[string]string) string {
+	t.Helper()
+	root := t.TempDir()
+	for module, body := range manifests {
+		dir := filepath.Join(root, "modules", module)
+		if err := os.MkdirAll(dir, 0o755); err != nil {
+			t.Fatal(err)
+		}
+		if err := os.WriteFile(filepath.Join(dir, "module.json"), []byte(body), 0o644); err != nil {
+			t.Fatal(err)
+		}
+	}
+	return root
+}
+
+// An offer that says no form is refused and named; one that says pair, none or an own secret passes; a route received
+// as a file is refused but for the module still moving off it; and the real catalogue is clean.
+func TestEveryOfferSaysTheFormOfItsCredential(t *testing.T) {
+	root := aCatalogue(t, map[string]string{
+		"silent":           `{"module":"silent","provides":[{"name":"thing","scope":"mesh"}]}`,
+		"binder":           `{"module":"binder","provides":[{"name":"d","credential":{"form":"pair"}}],"state":["bound"]}`,
+		"mesh-provisioner": `{"module":"mesh-provisioner","reads":["other.bound"]}`,
+		"says":             `{"module":"says","provides":[{"name":"a","credential":{"form":"pair"}},{"name":"b","credential":{"form":"none"}},{"name":"c","credential":{"own":"jwt"}}]}`,
+		// A route received as a file (issue 774, research 072 row 34): refused, naming every module still on it; the one
+		// listed as still moving passes.
+		"old-proxy":     `{"module":"old-proxy","receives":{"route":"/var/lib/old-proxy/mesh.json"}}`,
+		"route-adapter": `{"module":"route-adapter","receives":{"route":"/var/lib/route-adapter/mesh.json"}}`,
+	})
+	got, err := Problems(root)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(got) != 3 || !strings.Contains(got[0], `silent provides "thing"`) ||
+		!strings.Contains(got[1], "binder") || !strings.Contains(got[1], "mesh-provisioner") ||
+		!strings.HasPrefix(got[2], "old-proxy receives route") || !strings.Contains(got[2], "old-proxy, route-adapter") {
+		t.Fatalf("refused %v, wanted the silent offer, the binder the provisioner does not read and the received route", got)
+	}
+	real, err := Problems(filepath.Join("..", ".."))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(real) != 0 {
+		t.Fatalf("the catalogue has offers with no credential form:\n%s", strings.Join(real, "\n"))
+	}
+}

checks/credentialform/reads-outside

@@ -0,0 +1,3 @@
+# What these tests read outside their package, as paths from the repository's root (issue 1936).
+# every manifest, for what each offer says of its credential's form.
+modules/*/module.json

checks/failurekit/failurekit.go

@@ -0,0 +1,128 @@
+// Package failurekit refuses a build module whose tests do not run mesh-sdk's conformance kit (issue 1901, its thorough
+// fix): a module that claims a node-build-* seat and serves a test step must hold a test that calls conformance.Run, so
+// its parse of the test runner's output is held to the failure contract (a failing test named with its cause, never a
+// passing line in its place). A build module with no test step (mesh-build-image builds images and runs no tests) is
+// exempt from that, and said so. Every build module, test step or not, must also hold a test that calls
+// conformance.LeftRunning with its own start sweep, so a step a previous process left running is ended at its start
+// (issue 1890).
+package failurekit
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/fs"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+)
+
+// Judged is what the check says of one build module: Refused says why it fails the check, "" when it passes; Exempt
+// says why the kit does not apply.
+type Judged struct {
+	Module, Refused, Exempt string
+}
+
+type manifest struct {
+	Claims []struct {
+		Name string `json:"name"`
+	} `json:"claims"`
+	Tools []json.RawMessage `json:"tools"`
+}
+
+// Judge reads every modules/<m>/module.json of the catalogue at root and judges each module that claims a node-build-*
+// seat.
+func Judge(root string) ([]Judged, error) {
+	manifests, err := filepath.Glob(filepath.Join(root, "modules", "*", "module.json"))
+	if err != nil {
+		return nil, err
+	}
+	sort.Strings(manifests)
+	var out []Judged
+	for _, p := range manifests {
+		raw, err := os.ReadFile(p)
+		if err != nil {
+			return nil, err
+		}
+		var m manifest
+		if err := json.Unmarshal(raw, &m); err != nil {
+			return nil, fmt.Errorf("%s: %w", p, err)
+		}
+		seat := ""
+		for _, c := range m.Claims {
+			if strings.HasPrefix(c.Name, "node-build-") {
+				seat = c.Name
+			}
+		}
+		if seat == "" {
+			continue
+		}
+		dir := filepath.Dir(p)
+		j := Judged{Module: filepath.Base(dir)}
+		var refused []string
+		test := testTool(m.Tools)
+		switch {
+		case test == "":
+			j.Exempt = fmt.Sprintf("it claims %s and serves no test step, so the failure contract's cases do not apply", seat)
+		default:
+			runs, err := runsTheKit(dir, "conformance.Run(")
+			if err != nil {
+				return nil, err
+			}
+			if !runs {
+				refused = append(refused, fmt.Sprintf("it claims %s and serves the test step %s, and no test of it calls conformance.Run "+
+					"(mesh-sdk go/buildstep/conformance): run the kit with the module's own parse path (issue 1901)", seat, test))
+			}
+		}
+		// Every build module keeps steps, so every one runs the left-running case, test step or not (issue 1890).
+		sweeps, err := runsTheKit(dir, "conformance.LeftRunning(")
+		if err != nil {
+			return nil, err
+		}
+		if !sweeps {
+			refused = append(refused, fmt.Sprintf("it claims %s, and no test of it calls conformance.LeftRunning "+
+				"(mesh-sdk go/buildstep/conformance): run the kit's left-running case with the module's own start sweep (issue 1890)", seat))
+		}
+		j.Refused = strings.Join(refused, "; ")
+		out = append(out, j)
+	}
+	return out, nil
+}
+
+// testTool is the name of the module's test step tool (<prefix>_test), or "".
+func testTool(tools []json.RawMessage) string {
+	for _, raw := range tools {
+		var name string
+		if json.Unmarshal(raw, &name) != nil {
+			var t struct {
+				Name string `json:"name"`
+			}
+			if json.Unmarshal(raw, &t) != nil {
+				continue
+			}
+			name = t.Name
+		}
+		if strings.HasSuffix(name, "_test") {
+			return name
+		}
+	}
+	return ""
+}
+
+// runsTheKit says a _test.go file under dir calls the kit's function call (such as "conformance.Run(").
+func runsTheKit(dir, call string) (bool, error) {
+	found := false
+	err := filepath.WalkDir(dir, func(p string, d fs.DirEntry, err error) error {
+		if err != nil || found || d.IsDir() || !strings.HasSuffix(p, "_test.go") {
+			return err
+		}
+		raw, err := os.ReadFile(p)
+		if err != nil {
+			return err
+		}
+		found = strings.Contains(string(raw), call) &&
+			strings.Contains(string(raw), `"git.novox.be/novox/mesh-sdk/go/buildstep/conformance"`)
+		return nil
+	})
+	return found, err
+}

checks/failurekit/failurekit_test.go

@@ -0,0 +1,77 @@
+package failurekit
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+// 1901/AC7 and 1890/AC8: a build module with a test step and no kit is refused, one that runs the kit passes, one with no
+// test step is exempt from the failure cases but not from the left-running case, a module that runs only the failure
+// cases is refused, and a module that claims no node-build-* seat is not judged.
+func TestABuildModuleWithATestStepMustRunTheKit(t *testing.T) {
+	root := t.TempDir()
+	const imp = "package main\n\nimport \"git.novox.be/novox/mesh-sdk/go/buildstep/conformance\"\n\n"
+	const sweep = "func TestSweep(t *testing.T) { conformance.LeftRunning(t, nil) }\n"
+	kit := imp + "func TestKit(t *testing.T) { conformance.Run(t, conformance.GoTest, nil) }\n" + sweep
+	for path, body := range map[string]string{
+		"modules/a/module.json":         `{"claims":[{"name":"node-build-a"}],"tools":["build_a_fetch","build_a_test"]}`,
+		"modules/a/cmd/a/check_test.go": "package main\n",
+		"modules/b/module.json":         `{"claims":[{"name":"node-build-b"}],"tools":[{"name":"build_b_test"}]}`,
+		"modules/b/cmd/b/kit_test.go":   kit,
+		"modules/c/module.json":         `{"claims":[{"name":"node-build-c"}],"tools":["build_c_build"]}`,
+		"modules/c/cmd/c/kit_test.go":   imp + sweep,
+		"modules/f/module.json":         `{"claims":[{"name":"node-build-f"}],"tools":["build_f_build"]}`,
+		"modules/g/module.json":         `{"claims":[{"name":"node-build-g"}],"tools":["build_g_test"]}`,
+		"modules/g/cmd/g/kit_test.go":   imp + "func TestKit(t *testing.T) { conformance.Run(t, conformance.GoTest, nil) }\n",
+		"modules/d/module.json":         `{"claims":[{"name":"other"}],"tools":["d_test"]}`,
+		"modules/e/module.json":         `{"claims":[{"name":"node-build-e"}],"tools":["build_e_test"]}`,
+		"modules/e/cmd/e/kit.go":        kit, // not a test file
+	} {
+		p := filepath.Join(root, path)
+		if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
+			t.Fatal(err)
+		}
+		if err := os.WriteFile(p, []byte(body), 0o644); err != nil {
+			t.Fatal(err)
+		}
+	}
+	got, err := Judge(root)
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := map[string]string{"a": "refused", "b": "passes", "c": "exempt", "e": "refused", "f": "refused", "g": "refused"}
+	if len(got) != len(want) {
+		t.Fatalf("judged %+v, want a, b, c, e, f and g", got)
+	}
+	for _, j := range got {
+		is := "passes"
+		if j.Refused != "" {
+			is = "refused"
+		} else if j.Exempt != "" {
+			is = "exempt"
+		}
+		if is != want[j.Module] {
+			t.Errorf("%s %s (%+v), want it %s", j.Module, is, j, want[j.Module])
+		}
+	}
+}
+
+// Every build module of this catalogue with a test step runs the kit.
+func TestTheCataloguesBuildModulesRunTheKit(t *testing.T) {
+	got, err := Judge(filepath.Join("..", ".."))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(got) == 0 {
+		t.Fatal("no module claims a node-build-* seat: the check reads the wrong tree")
+	}
+	for _, j := range got {
+		switch {
+		case j.Refused != "":
+			t.Errorf("%s: %s", j.Module, j.Refused)
+		case j.Exempt != "":
+			t.Logf("%s is exempt: %s", j.Module, j.Exempt)
+		}
+	}
+}

checks/failurekit/go.mod

@@ -0,0 +1,3 @@
+module git.novox.be/novox/mesh-catalog/checks/failurekit
+
+go 1.22

checks/failurekit/reads-outside

@@ -0,0 +1,7 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# Judge("../.."): every manifest, and the directory of each module claiming a node-build-* seat, walked for a test that
+# calls the kit. The build modules are the mesh-build-* directories; a build module named otherwise needs its line here.
+modules/*/module.json
+modules/mesh-build-*

checks/handacts/fallbacks

@@ -0,0 +1,8 @@
+# The calls of the controller's hand-act log a manifest of this catalogue may still invoke, each `<module> <verb> <why>`:
+# the fallback of a recorder (mesh-sdk handacts.Recorder) while the seat mesh-hand-acts has no holder that answers, until
+# the controller's lease is written to a holder that is no controller. The check of this directory (handacts) refuses any
+# other, and an entry whose module no longer invokes it: the list only shrinks, and it is empty before the lease write
+# (novox/hq ADR 0565 §11; issue 1953, issue 774).
+mesh-config   hand-act   fallback until the lease write: its sets, clears and held values record through mesh-hand-acts first
+mesh-config   warranted  fallback until the lease write: its warrants record through mesh-hand-acts first
+mesh-healers  drill      fallback until the lease write: a drill records through mesh-hand-acts first

checks/handacts/go.mod

@@ -0,0 +1,3 @@
+module git.novox.be/novox/mesh-catalog/checks/handacts
+
+go 1.22

checks/handacts/main.go

@@ -0,0 +1,109 @@
+// Command handacts refuses a manifest that records into the controller's hand-act log (novox/hq ADR 0565 §11): every
+// recorder records through the seat mesh-hand-acts from its delivery, so no manifest invokes
+// `seat:mesh-controller.hand-act`, `.warranted` or `.drill`. The recorders' fallbacks to the controller's log while the
+// seat has no holder are named in checks/handacts/fallbacks, each module and verb with why; that list only shrinks, and
+// an entry whose module no longer invokes the verb is refused too.
+//
+//	go run . <catalog root>
+//
+// Exits 1 on a finding.
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+)
+
+// Verbs are the controller's hand-act verbs, as a manifest invokes them, and Allowed the list of named fallbacks.
+var Verbs = []string{"hand-act", "warranted", "drill"}
+
+const (
+	invokePrefix = "seat:mesh-controller."
+	Allowed      = "checks/handacts/fallbacks"
+)
+
+// Findings is every refusal in the catalog at root, sorted.
+func Findings(root string) ([]string, error) {
+	allowed := map[string]bool{}
+	raw, err := os.ReadFile(filepath.Join(root, Allowed))
+	if err != nil && !os.IsNotExist(err) {
+		return nil, err
+	}
+	for _, line := range strings.Split(string(raw), "\n") {
+		if f := strings.Fields(line); len(f) >= 3 && !strings.HasPrefix(f[0], "#") {
+			allowed[f[0]+" "+f[1]] = true
+		} else if len(f) > 0 && !strings.HasPrefix(f[0], "#") {
+			return nil, fmt.Errorf("%s: %q is not `<module> <verb> <why>`", Allowed, line)
+		}
+	}
+	manifests, err := filepath.Glob(filepath.Join(root, "modules", "*", "module.json"))
+	if err != nil {
+		return nil, err
+	}
+	var out []string
+	invoked := map[string]bool{}
+	for _, path := range manifests {
+		raw, err := os.ReadFile(path)
+		if err != nil {
+			return nil, err
+		}
+		var m struct {
+			Module  string   `json:"module"`
+			Invokes []string `json:"invokes"`
+		}
+		if json.Unmarshal(raw, &m) != nil || m.Module == "mesh-controller" {
+			continue
+		}
+		for _, inv := range m.Invokes {
+			verb, ok := strings.CutPrefix(strings.TrimSpace(inv), invokePrefix)
+			if !ok || !contains(Verbs, verb) {
+				continue
+			}
+			invoked[m.Module+" "+verb] = true
+			if !allowed[m.Module+" "+verb] {
+				out = append(out, fmt.Sprintf("%s invokes %s%s: record through seat:mesh-hand-acts.%s (novox/hq ADR 0565 §11), "+
+					"or name the fallback in %s", m.Module, invokePrefix, verb, verb, Allowed))
+			}
+		}
+	}
+	for entry := range allowed {
+		if !invoked[entry] {
+			out = append(out, fmt.Sprintf("%s names %q, which is no longer invoked: take it off the list, which only shrinks",
+				Allowed, entry))
+		}
+	}
+	sort.Strings(out)
+	return out, nil
+}
+
+func contains(list []string, s string) bool {
+	for _, x := range list {
+		if x == s {
+			return true
+		}
+	}
+	return false
+}
+
+func main() {
+	if len(os.Args) != 2 {
+		fmt.Fprintln(os.Stderr, "usage: handacts <catalog root>")
+		os.Exit(2)
+	}
+	found, err := Findings(os.Args[1])
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+	for _, f := range found {
+		fmt.Println(f)
+	}
+	if len(found) > 0 {
+		os.Exit(1)
+	}
+	fmt.Println("no manifest records into the controller's hand-act log but the fallbacks named")
+}

checks/handacts/main_test.go

@@ -0,0 +1,59 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+// No manifest invokes the controller's hand-act verbs but a named fallback; a named fallback no longer invoked is
+// refused (novox/hq ADR 0565 §11's catalog test).
+func TestFindings(t *testing.T) {
+	for _, row := range []struct {
+		name  string
+		files map[string]string
+		want  string // empty: clean
+	}{
+		{"clean", map[string]string{"modules/a/module.json": `{"module":"a","invokes":["seat:mesh-hand-acts.hand-act"]}`}, ""},
+		{"an unnamed call", map[string]string{"modules/a/module.json": `{"module":"a","invokes":["seat:mesh-controller.warranted"]}`},
+			"a invokes seat:mesh-controller.warranted"},
+		{"a named fallback, and the controller's own", map[string]string{
+			"modules/a/module.json":               `{"module":"a","invokes":["seat:mesh-controller.drill"]}`,
+			"modules/mesh-controller/module.json": `{"module":"mesh-controller","invokes":["seat:mesh-controller.hand-act"]}`,
+			Allowed:                               "# why\na drill fallback until the lease write\n"}, ""},
+		{"a fallback no longer invoked", map[string]string{Allowed: "gone hand-act fallback\n"}, `names "gone hand-act"`},
+		{"another verb of the controller", map[string]string{"modules/a/module.json": `{"module":"a","invokes":["seat:mesh-controller.conditions"]}`}, ""},
+	} {
+		t.Run(row.name, func(t *testing.T) {
+			root := t.TempDir()
+			for path, text := range row.files {
+				p := filepath.Join(root, path)
+				if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
+					t.Fatal(err)
+				}
+				if err := os.WriteFile(p, []byte(text), 0o644); err != nil {
+					t.Fatal(err)
+				}
+			}
+			got, err := Findings(root)
+			if err != nil {
+				t.Fatal(err)
+			}
+			if all := strings.Join(got, "\n"); (row.want == "") != (all == "") || !strings.Contains(all, row.want) {
+				t.Fatalf("findings = %q, want one containing %q", all, row.want)
+			}
+		})
+	}
+}
+
+// The run of this check over the real tree.
+func TestTheCatalogRecordsOnlyThroughTheSeat(t *testing.T) {
+	got, err := Findings(filepath.Join("..", ".."))
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, f := range got {
+		t.Error(f)
+	}
+}

checks/handacts/reads-outside

@@ -0,0 +1,3 @@
+# What these tests read outside their package, as paths from the repository's root (issue 1936).
+# every manifest, for what it invokes.
+modules/*/module.json

checks/health/go.mod

@@ -0,0 +1,5 @@
+module checks/health
+
+go 1.26.0
+
+require git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261031084708-acbf80ad910a

checks/health/go.sum

@@ -0,0 +1,2 @@
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261031084708-acbf80ad910a h1:DcSvfEmdPBKqCg5OmXRNb269EkkPe7BsEp+RykEhkgE=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261031084708-acbf80ad910a/go.mod h1:ouERNpZizzwZ0HLEtAypsY9FR20FyUgUYRni6J7kVCY=

checks/health/health.go

@@ -0,0 +1,70 @@
+// Package health is the catalogue's count of long-running resources that do not say how they are ready (novox/hq ADR 0240 rule
+// 8), kept in health-undeclared and judged by a test over the real tree (ADR 0529 clauses 2 and 4): it replaces the step of
+// merge-check.sh that read it out of the controller's `module check`. Every manifest is read through mesh-sdk's catalogue
+// package, the one the controller counts with.
+package health
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"sort"
+	"strconv"
+	"strings"
+
+	"git.novox.be/novox/mesh-sdk/go/catalogue"
+)
+
+// Count is the long-running resources without `health` of every module under root/modules.
+func Count(root string) (int, error) {
+	manifests, err := filepath.Glob(filepath.Join(root, "modules", "*", "module.json"))
+	if err != nil {
+		return 0, err
+	}
+	sort.Strings(manifests)
+	if len(manifests) == 0 {
+		return 0, fmt.Errorf("no manifest under %s: the count would be zero for any catalogue", filepath.Join(root, "modules"))
+	}
+	n := 0
+	for _, path := range manifests {
+		m, err := catalogue.ReadTreeManifest(root, filepath.Dir(path))
+		if err != nil {
+			return 0, fmt.Errorf("%s: %w", path, err)
+		}
+		n += len(catalogue.Undeclared(m))
+	}
+	return n, nil
+}
+
+// Kept is the number the file keeps: the first number of its first line.
+func Kept(path string) (int, error) {
+	raw, err := os.ReadFile(path)
+	if err != nil {
+		return 0, err
+	}
+	first, _, _ := strings.Cut(string(raw), "\n")
+	digits := ""
+	for _, r := range strings.TrimSpace(first) {
+		if r < '0' || r > '9' {
+			break
+		}
+		digits += string(r)
+	}
+	n, err := strconv.Atoi(digits)
+	if err != nil {
+		return 0, fmt.Errorf("%s does not begin with the number it keeps: %q", path, first)
+	}
+	return n, nil
+}
+
+// Judge says what is wrong with a count against the kept number; empty when they agree. It only goes down: a rise is refused,
+// and a fall asks the new number written in health-undeclared, so the count cannot rise again.
+func Judge(kept, counted int) string {
+	switch {
+	case counted > kept:
+		return fmt.Sprintf("the long-running resources without health rose from %d to %d: declare how each new one is ready (ADR 0240 rule 8)", kept, counted)
+	case counted < kept:
+		return fmt.Sprintf("the long-running resources without health fell from %d to %d: write %d in health-undeclared, so the count cannot rise again", kept, counted, counted)
+	}
+	return ""
+}

checks/health/health_test.go

@@ -0,0 +1,88 @@
+package health
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func aCatalogue(t *testing.T, manifests map[string]string) string {
+	t.Helper()
+	root := t.TempDir()
+	for module, body := range manifests {
+		dir := filepath.Join(root, "modules", module)
+		if err := os.MkdirAll(dir, 0o755); err != nil {
+			t.Fatal(err)
+		}
+		if err := os.WriteFile(filepath.Join(dir, "module.json"), []byte(body), 0o644); err != nil {
+			t.Fatal(err)
+		}
+	}
+	return root
+}
+
+// A service that stays up and does not say how it is ready is counted; one that says, and a file, are not.
+func TestOnlyALongRunningResourceWithoutHealthIsCounted(t *testing.T) {
+	root := aCatalogue(t, map[string]string{
+		"quiet": `{"module":"quiet","resources":[{"id":"svc","type":"service","unit":"quiet.service","state":"running"}]}`,
+		"says": `{"module":"says","resources":[{"id":"svc","type":"service","unit":"says.service","state":"running",` +
+			`"health":{"kind":"unit"}}]}`,
+		"file": `{"module":"file","resources":[{"id":"cfg","type":"file","path":"/etc/file.conf","content":"x"}]}`,
+	})
+	counted, err := Count(root)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if counted != 1 {
+		t.Fatalf("counted %d, wanted the one quiet service", counted)
+	}
+}
+
+func TestTheCountMayOnlyGoDown(t *testing.T) {
+	for _, c := range []struct {
+		kept, counted int
+		says          string
+	}{
+		{58, 58, ""},
+		{58, 59, "rose from 58 to 59"},
+		{58, 57, "fell from 58 to 57"},
+	} {
+		got := Judge(c.kept, c.counted)
+		if (c.says == "") != (got == "") || !strings.Contains(got, c.says) {
+			t.Errorf("kept %d counted %d: %q, wanted %q", c.kept, c.counted, got, c.says)
+		}
+	}
+}
+
+func TestTheKeptCountIsTheFirstNumberOfTheFile(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "health-undeclared")
+	if err := os.WriteFile(path, []byte("58\nThe long-running resources ...\n"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if n, err := Kept(path); err != nil || n != 58 {
+		t.Fatalf("%d %v", n, err)
+	}
+	if err := os.WriteFile(path, []byte("many\n"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := Kept(path); err == nil {
+		t.Fatal("a file with no number gave a count")
+	}
+}
+
+// The script's `module check` run over the real tree (novox/hq ADR 0240 rule 8, ADR 0529 clause 2 and 4): the long-running
+// resources that do not say how they are ready, counted as the controller counts them, are the number health-undeclared keeps.
+func TestTheCatalogueSaysHowItsLongRunningResourcesAreReady(t *testing.T) {
+	kept, err := Kept(filepath.Join("..", "..", "health-undeclared"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	counted, err := Count(filepath.Join("..", ".."))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if say := Judge(kept, counted); say != "" {
+		t.Fatal(say)
+	}
+}

checks/health/reads-outside

@@ -0,0 +1,10 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# every manifest through mesh-sdk's ReadTreeManifest: the root's predefined keys and each templated module's
+# templates (files/ by default, or the directory its manifest names); and the root's kept count of resources that do not say how they are ready.
+modules/*/module.json
+predefined.json
+modules/*/files
+modules/*/templates
+health-undeclared

checks/imagebuild/reads-outside

@@ -0,0 +1,5 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# Check("../.."): every manifest.
+modules/*/module.json

checks/imageplace/reads-outside

@@ -0,0 +1,5 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# Check("../.."): every manifest, and whether the path each image artifact builds from is there.
+modules

checks/locks/go.mod

@@ -0,0 +1,3 @@
+module git.novox.be/novox/mesh-catalog/checks/locks
+
+go 1.22

checks/locks/main.go

@@ -0,0 +1,105 @@
+// Command locks refuses a TypeScript module that names packages beyond the SDK in its package.json and commits no
+// package-lock.json (novox/hq ADR 0469 §5, issue 1868): the Node build module installs a module's own packages only
+// from its committed lock, so such a module is refused by the builder and could not be delivered.
+//
+//	go run . <catalogue root>
+//
+// Exits 1 on a finding. The packages that count are those the build module counts (mesh-build-node fetch.go
+// ownDependencies): the `dependencies` beyond the SDK, typescript and the @types packages.
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+)
+
+// Finding is one module refused: it names Packages beyond the SDK and has no lock file.
+type Finding struct {
+	Module   string
+	Packages []string
+}
+
+// Check reads every module under root/modules that builds a TypeScript artifact.
+func Check(root string) ([]Finding, error) {
+	manifests, err := filepath.Glob(filepath.Join(root, "modules", "*", "module.json"))
+	if err != nil {
+		return nil, err
+	}
+	sort.Strings(manifests)
+	var out []Finding
+	for _, path := range manifests {
+		raw, err := os.ReadFile(path)
+		if err != nil {
+			return nil, err
+		}
+		var m struct {
+			Module string `json:"module"`
+			Build  struct {
+				Artifacts []struct {
+					Language string `json:"language"`
+				} `json:"artifacts"`
+			} `json:"build"`
+		}
+		if err := json.Unmarshal(raw, &m); err != nil {
+			return nil, fmt.Errorf("%s: %w", path, err)
+		}
+		typescript := false
+		for _, a := range m.Build.Artifacts {
+			typescript = typescript || a.Language == "typescript"
+		}
+		if !typescript {
+			continue
+		}
+		dir := filepath.Dir(path)
+		pkgRaw, err := os.ReadFile(filepath.Join(dir, "package.json"))
+		if os.IsNotExist(err) {
+			continue
+		}
+		if err != nil {
+			return nil, err
+		}
+		var pkg struct {
+			Dependencies map[string]json.RawMessage `json:"dependencies"`
+		}
+		if err := json.Unmarshal(pkgRaw, &pkg); err != nil {
+			return nil, fmt.Errorf("%s: package.json: %w", m.Module, err)
+		}
+		var names []string
+		for n := range pkg.Dependencies {
+			if n != "@novox/mesh-sdk" && n != "typescript" && !strings.HasPrefix(n, "@types/") {
+				names = append(names, n)
+			}
+		}
+		if len(names) == 0 {
+			continue
+		}
+		if _, err := os.Stat(filepath.Join(dir, "package-lock.json")); err != nil {
+			sort.Strings(names)
+			out = append(out, Finding{Module: m.Module, Packages: names})
+		}
+	}
+	return out, nil
+}
+
+func main() {
+	root := "."
+	if len(os.Args) > 1 {
+		root = os.Args[1]
+	}
+	found, err := Check(root)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+	for _, f := range found {
+		fmt.Printf("%s names packages beyond the SDK (%s) and has no package-lock.json: commit one made by the build module's toolchain (novox/hq ADR 0469 §5)\n", f.Module, strings.Join(f.Packages, ", "))
+	}
+	if len(found) > 0 {
+		os.Exit(1)
+	}
+	fmt.Println("locks: every TypeScript module that names packages beyond the SDK commits its lock")
+}

checks/locks/main_test.go

@@ -0,0 +1,75 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"reflect"
+	"testing"
+)
+
+// module writes modules/<name> with a TypeScript artifact, the package.json given ("" for none) and, when lock, a lock.
+func module(t *testing.T, root, name, language, pkg string, lock bool) {
+	t.Helper()
+	dir := filepath.Join(root, "modules", name)
+	if err := os.MkdirAll(dir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	write := func(file, body string) {
+		if err := os.WriteFile(filepath.Join(dir, file), []byte(body), 0o644); err != nil {
+			t.Fatal(err)
+		}
+	}
+	write("module.json", `{"module":"`+name+`","build":{"artifacts":[{"name":"tools","kind":"bundle","language":"`+language+`","from":"index.ts"}]}}`)
+	if pkg != "" {
+		write("package.json", pkg)
+	}
+	if lock {
+		write("package-lock.json", "{}")
+	}
+}
+
+const sdkOnly = `{"dependencies":{"@novox/mesh-sdk":"^0.1.1"},"devDependencies":{"typescript":"^5","@types/node":"^22"}}`
+const withPg = `{"dependencies":{"@novox/mesh-sdk":"^0.1.1","pg":"^8","@types/pg":"^8"}}`
+
+func TestAModuleNamingOnlyTheSDKNeedsNoLock(t *testing.T) {
+	root := t.TempDir()
+	module(t, root, "plain", "typescript", sdkOnly, false)
+	module(t, root, "none", "typescript", "", false)
+	got, err := Check(root)
+	if err != nil || len(got) != 0 {
+		t.Fatalf("%v %v", got, err)
+	}
+}
+
+func TestAModuleNamingMorePackagesWithoutALockIsRefusedNamingThem(t *testing.T) {
+	root := t.TempDir()
+	module(t, root, "db", "typescript", withPg, false)
+	module(t, root, "db-locked", "typescript", withPg, true)
+	got, err := Check(root)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if want := []Finding{{Module: "db", Packages: []string{"pg"}}}; !reflect.DeepEqual(got, want) {
+		t.Fatalf("got %v, want %v", got, want)
+	}
+}
+
+func TestAModuleThatIsNotTypeScriptIsNotJudged(t *testing.T) {
+	root := t.TempDir()
+	module(t, root, "go", "go", withPg, false)
+	if got, err := Check(root); err != nil || len(got) != 0 {
+		t.Fatalf("%v %v", got, err)
+	}
+}
+
+// The script's run of this check over the real tree (novox/hq ADR 0529 clause 2): every TypeScript module that names packages
+// beyond the SDK commits its lock.
+func TestTheCatalogueCommitsTheLocksItNeeds(t *testing.T) {
+	found, err := Check("../..")
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, f := range found {
+		t.Errorf("%s names packages beyond the SDK (%v) and has no package-lock.json: commit one made by the build module's toolchain (novox/hq ADR 0469 §5)", f.Module, f.Packages)
+	}
+}

checks/locks/reads-outside

@@ -0,0 +1,7 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# Check("../.."): every manifest, a TypeScript module's package.json and whether its lock is there.
+modules/*/module.json
+modules/*/package.json
+modules/*/package-lock.json

checks/mailstore/reads-outside

@@ -0,0 +1,5 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# Check("../.."): every manifest.
+modules/*/module.json

checks/manifests/go.mod

@@ -0,0 +1,5 @@
+module checks/manifests
+
+go 1.26.0
+
+require git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261031084708-acbf80ad910a

checks/manifests/go.sum

@@ -0,0 +1,2 @@
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261031084708-acbf80ad910a h1:DcSvfEmdPBKqCg5OmXRNb269EkkPe7BsEp+RykEhkgE=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261031084708-acbf80ad910a/go.mod h1:ouERNpZizzwZ0HLEtAypsY9FR20FyUgUYRni6J7kVCY=

checks/manifests/main.go

@@ -0,0 +1,61 @@
+// Package manifests judges every module's manifest as the node-engine reads it, and the catalogue as one shelf: each
+// modules/*/module.json through mesh-sdk's ParseManifestWith against the predefined.json at the root, with its templates
+// read from the tree beside it (WithTemplatesFrom), then the rules between manifests (CatalogueProblems,
+// IdentityProblems, DataProblems).
+//
+// Why it is here (issue 774): on 2026-10-30 mesh-catalog ca8d6f33 gave power's bar item two attributes its bar places
+// by none of. ParseManifest refuses that, and every node-engine refused to compose at 19:13; no check of the pull
+// request had parsed the manifest. That judgement was mesh-controller's `module check`, which the merge gate ran over
+// every manifest before the checker moved to mesh-delivery; the checker runs this repository's Go tests and the
+// composition, and no test parsed a manifest whole. This one does, in the same functions the nodes use.
+package manifests
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"sort"
+
+	"git.novox.be/novox/mesh-sdk/go/catalogue"
+)
+
+// Problems is what is wrong with the manifests under root/modules, one line each: a manifest the mesh refuses, named by
+// its path, then the rules between the manifests that parse.
+func Problems(root string) ([]string, error) {
+	files, err := filepath.Glob(filepath.Join(root, "modules", "*", "module.json"))
+	if err != nil {
+		return nil, err
+	}
+	sort.Strings(files)
+	list, err := catalogue.ReadPredefined(root)
+	if err != nil {
+		return nil, err
+	}
+	var out []string
+	shelf := catalogue.Shelf{}
+	for _, f := range files {
+		raw, err := os.ReadFile(f)
+		if err != nil {
+			return nil, err
+		}
+		rel, _ := filepath.Rel(root, f)
+		m, err := catalogue.ParseManifestWith(raw, list)
+		if err == nil {
+			m, err = catalogue.WithTemplatesFrom(m, filepath.Dir(f))
+		}
+		if err != nil {
+			out = append(out, fmt.Sprintf("%s: %v", rel, err))
+			continue
+		}
+		if _, twice := shelf[m.Module]; twice {
+			out = append(out, fmt.Sprintf("%s: %s was already given; two manifests name one module", rel, m.Module))
+			continue
+		}
+		shelf[m.Module] = m
+	}
+	between := catalogue.CatalogueProblems(shelf)
+	between = append(between, catalogue.IdentityProblems(shelf, catalogue.DefaultLongestMachine)...)
+	between = append(between, catalogue.DataProblems(shelf)...)
+	sort.Strings(between)
+	return append(out, between...), nil
+}

checks/manifests/main_test.go

@@ -0,0 +1,51 @@
+package manifests
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+// Every manifest of the catalogue is one the nodes can use, and the catalogue holds together as one shelf. A row is a
+// manifest written into a catalogue of its own: power's bar item as mesh-catalog ca8d6f33 gave it (issue 774) is
+// refused naming the attribute, and the same item without it passes.
+func TestEveryManifestIsOneTheNodesCanUse(t *testing.T) {
+	for _, row := range []struct {
+		name, attributes, refused string
+	}{
+		{name: "the bar places by bar and place", attributes: `"bar":"bottom","place":"status","order":"45"`},
+		{name: "an attribute the bar places by none of (ca8d6f33)",
+			attributes: `"bar":"bottom","place":"status","order":"45","shows":"state","state":"power.draw"`,
+			refused:    `"shows" is none of them`},
+	} {
+		root := t.TempDir()
+		dir := filepath.Join(root, "modules", "bar-user")
+		if err := os.MkdirAll(filepath.Join(dir, "files"), 0o755); err != nil {
+			t.Fatal(err)
+		}
+		manifest := `{"module":"bar-user","version":"1","moved":true,` +
+			`"build":{"artifacts":[{"name":"files","kind":"archive","from":"files"}]},` +
+			`"items":[{"collection":"contribution:node-bar:block","attributes":{` + row.attributes + `},"template":"files/bar"}]}`
+		for path, body := range map[string]string{"module.json": manifest, "files/bar": "{\"shows\":\"command\"}\n"} {
+			if err := os.WriteFile(filepath.Join(dir, path), []byte(body), 0o644); err != nil {
+				t.Fatal(err)
+			}
+		}
+		got, err := Problems(root)
+		if err != nil {
+			t.Fatal(err)
+		}
+		joined := strings.Join(got, "\n")
+		if (row.refused == "") != (len(got) == 0) || !strings.Contains(joined, row.refused) {
+			t.Errorf("%s: refused %q, want %q", row.name, joined, row.refused)
+		}
+	}
+	real, err := Problems(filepath.Join("..", ".."))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(real) != 0 {
+		t.Fatalf("the catalogue holds manifests the nodes cannot use:\n%s", strings.Join(real, "\n"))
+	}
+}

checks/manifests/reads-outside

@@ -0,0 +1,4 @@
+# What these tests read outside their package, as paths from the repository's root (issue 1936).
+# every module's directory (its manifest and the templates beside it), and the list of predefined keys.
+modules
+predefined.json

checks/nobinaries/go.mod

@@ -0,0 +1,3 @@
+module git.novox.be/novox/mesh-catalog/checks/nobinaries
+
+go 1.22

checks/nobinaries/nobinaries.go

@@ -0,0 +1,84 @@
+// Package nobinaries refuses a compiled program anywhere in the repository (issue 1577; first a checks/ binary slipped past a modules/-only rule): it is build output, made by the module's build step,
+// and `go build` in a module's folder writes one beside go.mod where `git add -A` takes it.
+package nobinaries
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+)
+
+// Kind says what executable format the first bytes of a file are, or "" when they are none.
+func Kind(head []byte) string {
+	switch {
+	case bytes.HasPrefix(head, []byte("\x7fELF")):
+		return "ELF"
+	case bytes.HasPrefix(head, []byte("MZ")):
+		return "PE"
+	case bytes.HasPrefix(head, []byte{0xcf, 0xfa, 0xed, 0xfe}), bytes.HasPrefix(head, []byte{0xce, 0xfa, 0xed, 0xfe}),
+		bytes.HasPrefix(head, []byte{0xfe, 0xed, 0xfa, 0xcf}), bytes.HasPrefix(head, []byte{0xfe, 0xed, 0xfa, 0xce}),
+		bytes.HasPrefix(head, []byte{0xca, 0xfe, 0xba, 0xbe}) && len(head) >= 8 && head[7] < 0x20 && head[6] == 0 && head[5] == 0 && head[4] == 0:
+		return "Mach-O"
+	}
+	return ""
+}
+
+// Files are the files of the catalogue's root that the change holds, anywhere: the tracked ones when the root is a git
+// checkout (an ignored binary a local build left is not the change's), else every file there but .git's.
+func Files(root string) ([]string, error) {
+	cmd := exec.Command("git", "-C", root, "ls-files", "-z")
+	if out, err := cmd.Output(); err == nil && len(out) > 0 {
+		var files []string
+		for _, f := range strings.Split(strings.TrimRight(string(out), "\x00"), "\x00") {
+			if _, err := os.Lstat(filepath.Join(root, f)); err == nil { // a file the change deletes is not there
+				files = append(files, f)
+			}
+		}
+		return files, nil
+	}
+	var files []string
+	err := filepath.WalkDir(root, func(p string, d os.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		if d.IsDir() && d.Name() == ".git" {
+			return filepath.SkipDir
+		}
+		if d.IsDir() || !d.Type().IsRegular() {
+			return nil
+		}
+		rel, _ := filepath.Rel(root, p)
+		files = append(files, rel)
+		return nil
+	})
+	return files, err
+}
+
+// Find names each file of files (paths from root) that is a compiled program, with its format.
+func Find(root string, files []string) ([]string, error) {
+	var found []string
+	for _, f := range files {
+		p := filepath.Join(root, f)
+		if st, err := os.Lstat(p); err != nil || !st.Mode().IsRegular() {
+			continue
+		}
+		fh, err := os.Open(p)
+		if err != nil {
+			return nil, err
+		}
+		head := make([]byte, 8)
+		n, err := io.ReadFull(fh, head)
+		fh.Close()
+		if err != nil && err != io.ErrUnexpectedEOF && err != io.EOF {
+			return nil, err
+		}
+		if k := Kind(head[:n]); k != "" {
+			found = append(found, fmt.Sprintf("%s (%s)", f, k))
+		}
+	}
+	return found, nil
+}

checks/nobinaries/nobinaries_test.go

@@ -0,0 +1,89 @@
+package nobinaries
+
+import (
+	"os"
+	"os/exec"
+	"path/filepath"
+	"testing"
+)
+
+func TestFindNamesEachCompiledProgramAndNothingElse(t *testing.T) {
+	root := t.TempDir()
+	files := map[string][]byte{
+		"modules/a/a":           []byte("\x7fELF\x02\x01\x01\x00rest"),
+		"modules/b/cmd/b/b.exe": []byte("MZ\x90\x00"),
+		"modules/c/c":           {0xcf, 0xfa, 0xed, 0xfe, 7, 0, 0, 1},
+		"modules/d/main.go":     []byte("package main\n"),
+		"modules/e/short":       []byte("\x7f"),
+		"modules/f/empty":       {},
+		"modules/g/Foo.class":   {0xca, 0xfe, 0xba, 0xbe, 0, 0, 0, 52}, // Java, not Mach-O
+		"checks/words/words":    []byte("\x7fELF\x02\x01\x01\x00rest"), // outside modules/ too
+	}
+	var names []string
+	for f, b := range files {
+		p := filepath.Join(root, f)
+		if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
+			t.Fatal(err)
+		}
+		if err := os.WriteFile(p, b, 0o644); err != nil {
+			t.Fatal(err)
+		}
+		names = append(names, f)
+	}
+	got, err := Find(root, names)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(got) != 4 {
+		t.Fatalf("found %v; wanted modules/a/a, modules/b/cmd/b/b.exe and modules/c/c and checks/words/words only", got)
+	}
+}
+
+// The catalogue's own tree holds no compiled program: a compiled program is build output, so remove it and add it to .gitignore.
+func TestTheCatalogueHoldsNoCompiledProgram(t *testing.T) {
+	root := filepath.Join("..", "..")
+	files, err := Files(root)
+	if err != nil {
+		t.Fatal(err)
+	}
+	found, err := Find(root, files)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, f := range found {
+		t.Errorf("%s: a compiled program is build output: remove it and add it to .gitignore (issue 1577)", f)
+	}
+}
+
+// A compiled program outside modules/ is refused too (a binary under checks/ slipped past the modules/-only rule): Files holds
+// every tracked file of a git checkout and every file of a plain folder, and Find names the binary in both.
+func TestAProgramUnderChecksIsRefused(t *testing.T) {
+	for _, git := range []bool{true, false} {
+		root := t.TempDir()
+		p := filepath.Join(root, "checks", "words", "words")
+		if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
+			t.Fatal(err)
+		}
+		if err := os.WriteFile(p, []byte("\x7fELF\x02\x01\x01\x00rest"), 0o644); err != nil {
+			t.Fatal(err)
+		}
+		if git {
+			for _, args := range [][]string{{"init", "-q"}, {"add", "-A"}} {
+				if out, err := exec.Command("git", append([]string{"-C", root}, args...)...).CombinedOutput(); err != nil {
+					t.Fatalf("git %v: %v: %s", args, err, out)
+				}
+			}
+		}
+		files, err := Files(root)
+		if err != nil {
+			t.Fatal(err)
+		}
+		found, err := Find(root, files)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if len(found) != 1 {
+			t.Errorf("git=%v: found %v; wanted checks/words/words (ELF)", git, found)
+		}
+	}
+}

checks/nobinaries/reads-outside

@@ -0,0 +1 @@
+# every tracked file of the repository (git ls-files, no path limit): the whole tree, so this package's verdict is never kept.

checks/noplacement/assignments-readers

@@ -0,0 +1,4 @@
+# The modules of this catalogue that still read the controller's assignments (mesh-controller.assignments), each with
+# why. The check of this directory (noplacement) refuses any other module that reads them, and an entry here whose module no longer
+# does: the list only shrinks, and it is empty before the controller's lease is written to a holder that is no
+# controller (novox/hq ADR 0549 §3, §6; issue 774).

checks/noplacement/go.mod

@@ -0,0 +1,7 @@
+module git.novox.be/novox/mesh-catalog/checks/noplacement
+
+go 1.22
+
+require git.novox.be/novox/mesh-catalog/checks/trunk v0.0.0
+
+replace git.novox.be/novox/mesh-catalog/checks/trunk => ../trunk

checks/noplacement/main.go

@@ -0,0 +1,170 @@
+// Command noplacement refuses what the repository path of placement left behind (novox/hq ADR 0567 §10, §12).
+//
+// Placement, which module runs on which node, is bus state held by the seat mesh-placement; no file of the
+// catalogue says it, and no manifest reads it from the delivery indexer, which no longer keeps it. It refuses:
+//
+//  1. a `placement` directory (or file) at the root of the catalogue;
+//
+//  2. a `particulars` file at the root (the mesh's node names come from the checker's run, §16);
+//
+//  3. a manifest naming a state, stream, event or bucket of the indexer's placement (`mesh-delivery-indexer.placement…`
+//     or `mesh-delivery-indexer_placement…`) in any string value, such as `reads`;
+//
+//  4. a manifest, other than mesh-controller's, that reads the controller's assignments (`mesh-controller.assignments`):
+//     every reader takes placement from the seat mesh-placement (novox/hq ADR 0549 §3, ADR 0567), and the lease write is
+//     refused while one still reads them (ADR 0549 §6; issue 774). The modules that still read them for what the
+//     placement does not carry are named in checks/noplacement/assignments-readers, each with why; that list only
+//     shrinks: an entry whose module no longer reads them is refused too.
+//
+//     go run . <catalogue root>
+//
+// Exits 1 on a finding.
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+)
+
+// Prefixes are the names of the indexer's placement parts; a manifest string starting with one names them.
+var Prefixes = []string{"mesh-delivery-indexer.placement", "mesh-delivery-indexer_placement"}
+
+// Findings is every refusal in the catalogue at root, sorted.
+func Findings(root string) ([]string, error) {
+	var out []string
+	if _, err := os.Lstat(filepath.Join(root, "placement")); err == nil {
+		out = append(out, "placement: the repository holds no placement; it is bus state of the seat mesh-placement (novox/hq ADR 0567 §10)")
+	}
+	if _, err := os.Lstat(filepath.Join(root, "particulars")); err == nil {
+		out = append(out, "particulars: the repository lists no node names; the checker hands them to the check (novox/hq ADR 0567 §16)")
+	}
+	manifests, err := filepath.Glob(filepath.Join(root, "modules", "*", "module.json"))
+	if err != nil {
+		return nil, err
+	}
+	sort.Strings(manifests)
+	for _, file := range manifests {
+		raw, err := os.ReadFile(file)
+		if err != nil {
+			return nil, err
+		}
+		var doc any
+		if err := json.Unmarshal(raw, &doc); err != nil {
+			return nil, fmt.Errorf("%s: %w", file, err)
+		}
+		module := filepath.Base(filepath.Dir(file))
+		for _, s := range named(doc, nil) {
+			out = append(out, fmt.Sprintf("%s: names %q, which the indexer no longer keeps; placement is the seat mesh-placement's (novox/hq ADR 0567 §12)", module, s))
+		}
+	}
+	readers, err := assignmentsReaders(root)
+	if err != nil {
+		return nil, err
+	}
+	out = append(out, readers...)
+	sort.Strings(out)
+	return out, nil
+}
+
+// AssignmentsRead is the controller's assignments as a manifest reads them, and Allowed the file, relative to the
+// catalogue's root, that names the modules still reading them: `<module> <why>` per line, `#` a comment.
+const (
+	AssignmentsRead = "mesh-controller.assignments"
+	Allowed         = "checks/noplacement/assignments-readers"
+)
+
+// assignmentsReaders is every finding on the reads of the controller's assignments: a module other than the controller
+// reading them that Allowed does not name, and a module Allowed names that no longer reads them (issue 774).
+func assignmentsReaders(root string) ([]string, error) {
+	allowed := map[string]bool{}
+	raw, err := os.ReadFile(filepath.Join(root, Allowed))
+	if err != nil && !os.IsNotExist(err) {
+		return nil, err
+	}
+	for _, line := range strings.Split(string(raw), "\n") {
+		if f := strings.Fields(line); len(f) > 0 && !strings.HasPrefix(f[0], "#") {
+			allowed[f[0]] = true
+		}
+	}
+	manifests, err := filepath.Glob(filepath.Join(root, "modules", "*", "module.json"))
+	if err != nil {
+		return nil, err
+	}
+	var found []string
+	reads := map[string]bool{}
+	for _, path := range manifests {
+		raw, err := os.ReadFile(path)
+		if err != nil {
+			return nil, err
+		}
+		var m struct {
+			Module string   `json:"module"`
+			Reads  []string `json:"reads"`
+		}
+		if json.Unmarshal(raw, &m) != nil || m.Module == "mesh-controller" {
+			continue // a manifest that does not read is the manifest checks' to refuse
+		}
+		for _, r := range m.Reads {
+			if strings.TrimSpace(r) != AssignmentsRead {
+				continue
+			}
+			reads[m.Module] = true
+			if !allowed[m.Module] {
+				found = append(found, fmt.Sprintf("%s reads %s: read where modules run from mesh-delivery-assigner.placement, "+
+					"the seat mesh-placement's (novox/hq ADR 0549 §3, ADR 0567); the lease write is refused while a module reads "+
+					"the assignments (ADR 0549 §6)", m.Module, AssignmentsRead))
+			}
+		}
+	}
+	for module := range allowed {
+		if !reads[module] {
+			found = append(found, fmt.Sprintf("%s names %s, which no longer reads %s: take it off the list, which only shrinks",
+				Allowed, module, AssignmentsRead))
+		}
+	}
+	return found, nil
+}
+
+// named collects the strings of a decoded manifest that start with one of the Prefixes.
+func named(v any, into []string) []string {
+	switch v := v.(type) {
+	case string:
+		for _, p := range Prefixes {
+			if strings.HasPrefix(v, p) {
+				return append(into, v)
+			}
+		}
+	case []any:
+		for _, e := range v {
+			into = named(e, into)
+		}
+	case map[string]any:
+		for _, e := range v {
+			into = named(e, into)
+		}
+	}
+	return into
+}
+
+func main() {
+	if len(os.Args) != 2 {
+		fmt.Fprintln(os.Stderr, "usage: noplacement <catalogue root>")
+		os.Exit(2)
+	}
+	found, err := Findings(os.Args[1])
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+	for _, f := range found {
+		fmt.Println(f)
+	}
+	if len(found) > 0 {
+		os.Exit(1)
+	}
+	fmt.Println("no placement directory, no manifest reads the indexer's placement, and only the modules listed read the controller's assignments")
+}

checks/noplacement/main_test.go

@@ -0,0 +1,88 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"git.novox.be/novox/mesh-catalog/checks/trunk"
+)
+
+func TestFindingsRefuseWhatThePlacementPathLeft(t *testing.T) {
+	for _, row := range []struct {
+		name  string
+		files map[string]string
+		want  string // empty: clean
+	}{
+		{"clean", map[string]string{"modules/a/module.json": `{"module":"a","reads":["mesh-delivery-assigner.placement"]}`}, ""},
+		{"a placement directory", map[string]string{"placement/ace.json": `{}`}, "placement: the repository holds no placement"},
+		{"a particulars file", map[string]string{"particulars": "ace\n"}, "particulars: the repository lists no node names"},
+		{"a read of the indexer's placement", map[string]string{"modules/a/module.json": `{"module":"a","reads":["mesh-delivery-indexer.placement"]}`}, `a: names "mesh-delivery-indexer.placement"`},
+		{"a read of its candidates", map[string]string{"modules/b/module.json": `{"module":"b","reads":["mesh-delivery-indexer.placement-candidates"]}`}, "placement-candidates"},
+		{"its event", map[string]string{"modules/c/module.json": `{"module":"c","on":[{"event":"mesh-delivery-indexer.placement-changed"}]}`}, "placement-changed"},
+		// Issue 774 (ADR 0549 §3, §6): a reader of the controller's assignments is refused unless the list names it, the
+		// controller's own manifest is not judged, and a name on the list whose module no longer reads them is refused.
+		{"an unlisted reader of the assignments", map[string]string{"modules/r/module.json": `{"module":"r","reads":["mesh-controller.assignments"]}`}, "r reads mesh-controller.assignments"},
+		{"a listed reader and the controller", map[string]string{"modules/l/module.json": `{"module":"l","reads":["mesh-controller.assignments"]}`,
+			"modules/mesh-controller/module.json": `{"module":"mesh-controller","reads":["mesh-controller.assignments"]}`, Allowed: "# why\nl  its plan\n"}, ""},
+		{"a listed module that reads them no more", map[string]string{Allowed: "gone  no longer reads\n"}, "names gone, which no longer reads"},
+		{"the seat's own state is allowed", map[string]string{"modules/d/module.json": `{"module":"d","reads":["mesh-placement.placement"]}`}, ""},
+	} {
+		t.Run(row.name, func(t *testing.T) {
+			root := t.TempDir()
+			for path, text := range row.files {
+				p := filepath.Join(root, path)
+				if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
+					t.Fatal(err)
+				}
+				if err := os.WriteFile(p, []byte(text), 0o644); err != nil {
+					t.Fatal(err)
+				}
+			}
+			got, err := Findings(root)
+			if err != nil {
+				t.Fatal(err)
+			}
+			if all := strings.Join(got, "\n"); (row.want == "") != (all == "") || !strings.Contains(all, row.want) {
+				t.Fatalf("findings = %q, want one containing %q", all, row.want)
+			}
+		})
+	}
+}
+
+// The script's run of this check over the real tree (novox/hq ADR 0529 clause 2).
+func TestTheCatalogueHoldsNoPlacementOfTheRepositoryPath(t *testing.T) {
+	got, err := Findings(filepath.Join("..", ".."))
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, f := range got {
+		t.Error(f)
+	}
+	// Issue 774 (ADR 0549 §3, §6; the comparison of novox/hq ADR 0529 clause 2): the list of modules still reading the
+	// controller's assignments gains none the trunk's copy at the merge base does not hold. Its first copy gains nothing.
+	path, ok := trunk.Copy(t, Allowed)
+	if !ok {
+		return
+	}
+	names := func(path string) map[string]bool {
+		raw, err := os.ReadFile(path)
+		if err != nil {
+			t.Fatal(err)
+		}
+		out := map[string]bool{}
+		for _, line := range strings.Split(string(raw), "\n") {
+			if f := strings.Fields(line); len(f) > 0 && !strings.HasPrefix(f[0], "#") {
+				out[f[0]] = true
+			}
+		}
+		return out
+	}
+	base := names(path)
+	for module := range names(filepath.Join("..", "..", Allowed)) {
+		if !base[module] {
+			t.Errorf("%s gains %s, which the trunk's copy does not hold: the list only shrinks", Allowed, module)
+		}
+	}
+}

checks/noplacement/reads-outside

@@ -0,0 +1,6 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# the root, for a placement directory, and every manifest, for a read of the indexer's placement states.
+?placement
+modules/*/module.json

checks/noscripts/go.mod

@@ -0,0 +1,3 @@
+module checks/noscripts
+
+go 1.22

checks/noscripts/noscripts_test.go

@@ -0,0 +1,19 @@
+package noscripts
+
+import (
+	"errors"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+// The catalogue's checks are Go tests (novox/hq ADR 0529 clause 5, ADR 0445): the checker runs every nested Go module's tests by
+// the language's convention and no script at the root says what else to run. A script back at the root would be a check nobody
+// runs (ADR 0503 §3: since R4e the checker has not run them), so it is refused.
+func TestNoScriptOfTheOldCheckStandsAtTheRoot(t *testing.T) {
+	for _, name := range []string{"merge-check.sh", "merge-check-typescript.sh", "check-nested-modules.sh"} {
+		if _, err := os.Stat(filepath.Join("..", "..", name)); !errors.Is(err, os.ErrNotExist) {
+			t.Errorf("%s stands at the catalogue's root (%v): what it ran is a Go test in checks/ or a step of the build module", name, err)
+		}
+	}
+}

checks/noscripts/reads-outside

@@ -0,0 +1,7 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# that none of the old check scripts stands at the root.
+?merge-check.sh
+?merge-check-typescript.sh
+?check-nested-modules.sh

checks/owned/go.mod

@@ -1,3 +1,7 @@
 module git.novox.be/novox/mesh-catalog/checks/owned
 
 go 1.22
+
+require git.novox.be/novox/mesh-catalog/checks/trunk v0.0.0
+
+replace git.novox.be/novox/mesh-catalog/checks/trunk => ../trunk

checks/owned/main.go

@@ -11,13 +11,23 @@
 //     another module, after ${dir:<id>} is resolved within each module and both homes are read as one root.
 //     Archives are not containers for this rule. This holds for ~/.ssh what checks/sshdir held (ADR 0415 §6).
 //
-//     go run . <catalogue root>
+//  5. a directory that is, lies inside or holds a directory a system package owns under /var/lib, or any other
+//     resource inside one (issue 1841: pacman's state directory, placed with "place": ".", was /var/lib/pacman, the
+//     package manager's own database directory). A placed directory is resolved as the mesh resolves it with the
+//     default data root: "." is /var/lib/<module>, "mesh" /var/lib/mesh/<module>, neither /var/lib/<module>/<id>.
+//     The system directories are checks/owned/system, captured from a machine (pacman -Qo, /usr/lib/tmpfiles.d);
+//     checks/owned/system-known names the exceptions still to fix, by module, resource and issue. That list only
+//     shrinks: an entry that no longer collides is refused, and with -base one the trunk's copy does not hold.
+//
+//     go run . [-base <trunk's system-known>] <catalogue root>
 //
 // Exits 1 on a finding.
 package main
 
 import (
 	"encoding/json"
+	"errors"
+	"flag"
 	"fmt"
 	"os"
 	"path"
@@ -27,6 +37,12 @@ import (
 	"strings"
 )
 
+// The lists of rule 5, relative to the catalogue's root.
+const (
+	SystemList  = "checks/owned/system"
+	SystemKnown = "checks/owned/system-known"
+)
+
 // Home is the one root both machine homes are read as.
 const Home = "${home}"
 
@@ -43,9 +59,9 @@ type Finding struct {
 }
 
 type resource struct {
-	ID, Type, Path, Unknown string
-	Knows                   []string
-	HasKnows                bool
+	ID, Type, Path, Unknown, Place string
+	Knows                          []string
+	HasKnows                       bool
 }
 
 type parsed struct {
@@ -65,6 +81,7 @@ func load(file string) (*parsed, error) {
 			ID      string   `json:"id"`
 			Type    string   `json:"type"`
 			Path    string   `json:"path"`
+			Place   string   `json:"place"`
 			Unknown *string  `json:"unknown"`
 			Knows   []string `json:"knows"`
 		} `json:"resources"`
@@ -81,7 +98,7 @@ func load(file string) (*parsed, error) {
 		out.Module = filepath.Base(filepath.Dir(file))
 	}
 	for _, r := range m.Resources {
-		x := resource{ID: r.ID, Type: r.Type, Path: r.Path, Knows: r.Knows, HasKnows: r.Knows != nil}
+		x := resource{ID: r.ID, Type: r.Type, Path: r.Path, Place: r.Place, Knows: r.Knows, HasKnows: r.Knows != nil}
 		if r.Unknown != nil {
 			x.Unknown = *r.Unknown
 			if x.Unknown == "" {
@@ -143,14 +160,23 @@ type declared struct {
 }
 
 // Check reads every manifest under root/modules and answers what it refuses.
-func Check(root string) ([]Finding, error) {
+func Check(root string, base []string) ([]Finding, error) {
 	files, err := filepath.Glob(filepath.Join(root, "modules", "*", "module.json"))
 	if err != nil {
 		return nil, err
 	}
 	sort.Strings(files)
+	system, err := readSystem(filepath.Join(root, SystemList))
+	if err != nil {
+		return nil, err
+	}
+	known, err := readLines(filepath.Join(root, SystemKnown))
+	if err != nil && !errors.Is(err, os.ErrNotExist) {
+		return nil, err
+	}
 	var out []Finding
 	var paths []declared
+	collided := map[string]bool{}
 	type container struct{ module, path string }
 	var containers []container
 	for _, file := range files {
@@ -170,6 +196,7 @@ func Check(root string) ([]Finding, error) {
 				dirs[r.ID] = "/placed/" + m.Module + "/" + r.ID
 			}
 		}
+		out = append(out, inSystem(m, system, known, collided)...)
 		for _, r := range m.Resources {
 			p := norm(r.Path, dirs)
 			if p != "" {
@@ -212,6 +239,28 @@ func Check(root string) ([]Finding, error) {
 			}
 		}
 	}
+	for _, k := range known {
+		if !collided[k] {
+			module, id, _ := strings.Cut(k, " ")
+			id, _, _ = strings.Cut(id, " ")
+			out = append(out, Finding{5, module, id, fmt.Sprintf("is listed in %s, and no longer lies in a system "+
+				"package's directory: take the line out, so the list only shrinks", SystemKnown)})
+		}
+	}
+	if base != nil {
+		held := map[string]bool{}
+		for _, b := range base {
+			held[b] = true
+		}
+		for _, k := range known {
+			if !held[k] {
+				module, id, _ := strings.Cut(k, " ")
+				id, _, _ = strings.Cut(id, " ")
+				out = append(out, Finding{5, module, id, fmt.Sprintf("is a new line in %s, which the trunk's copy "+
+					"does not hold: a module's directory is placed outside a system package's, never listed", SystemKnown)})
+			}
+		}
+	}
 	for _, d := range paths {
 		for _, c := range containers {
 			if c.module != d.module && (d.path == c.path || strings.HasPrefix(d.path, c.path+"/")) {
@@ -222,21 +271,140 @@ func Check(root string) ([]Finding, error) {
 	return out, nil
 }
 
-func main() {
-	root := "."
-	if len(os.Args) > 1 {
-		root = os.Args[1]
+// systemDir is one directory a system package owns, and what says so.
+type systemDir struct{ Path, Source string }
+
+// readLines is a list's lines, without comments and blank lines.
+func readLines(file string) ([]string, error) {
+	raw, err := os.ReadFile(file)
+	if err != nil {
+		return nil, err
 	}
-	found, err := Check(root)
+	var lines []string
+	for _, line := range strings.Split(string(raw), "\n") {
+		if line = strings.TrimSpace(line); line != "" && !strings.HasPrefix(line, "#") {
+			lines = append(lines, line)
+		}
+	}
+	return lines, nil
+}
+
+// readSystem is the list of system directories: "<absolute path> <package>: <how it was read>" per line. Absent or
+// empty, the check fails: a list that says nothing would let every module through.
+func readSystem(file string) ([]systemDir, error) {
+	lines, err := readLines(file)
+	if err != nil {
+		return nil, fmt.Errorf("rule 5 reads the system packages' directories from %s: %w", file, err)
+	}
+	if len(lines) == 0 {
+		return nil, fmt.Errorf("%s names no system package's directory, so rule 5 would pass everything", file)
+	}
+	var out []systemDir
+	for _, line := range lines {
+		p, source, _ := strings.Cut(line, " ")
+		if !strings.HasPrefix(p, "/var/lib/") || strings.TrimSpace(source) == "" {
+			return nil, fmt.Errorf("%s: %q is not \"/var/lib/<directory> <package>: <how it was read>\"", file, line)
+		}
+		out = append(out, systemDir{path.Clean(p), strings.TrimSpace(source)})
+	}
+	return out, nil
+}
+
+// placedAt is where the mesh places a pathless directory with the default data root (mesh-sdk catalogue dirsFor).
+func placedAt(module string, r resource) string {
+	switch r.Place {
+	case ".":
+		return "/var/lib/" + module
+	case "mesh":
+		return "/var/lib/mesh/" + module
+	}
+	return "/var/lib/" + module + "/" + r.ID
+}
+
+// inSystem is rule 5 for one module: each resource whose resolved path collides with a system package's directory,
+// unless system-known lists it (then it is marked collided, so a stale line is found).
+func inSystem(m *parsed, system []systemDir, known []string, collided map[string]bool) []Finding {
+	real := map[string]string{}
+	for _, r := range m.Resources {
+		if r.Type == "directory" && r.Path == "" && r.ID != "" {
+			real[r.ID] = placedAt(m.Module, r)
+		}
+	}
+	for _, r := range m.Resources {
+		if r.ID != "" && r.Path != "" {
+			real[r.ID] = r.Path
+		}
+	}
+	var out []Finding
+	for _, r := range m.Resources {
+		p := ""
+		if r.Path != "" {
+			p = norm(r.Path, real)
+		} else if r.Type == "directory" {
+			p = real[r.ID]
+		}
+		if !strings.HasPrefix(p, "/") {
+			continue
+		}
+		for _, s := range system {
+			inside := p == s.Path || strings.HasPrefix(p, s.Path+"/")
+			holds := r.Type == "directory" && strings.HasPrefix(s.Path, p+"/")
+			if !inside && !holds {
+				continue
+			}
+			listed := ""
+			for _, k := range known {
+				if strings.HasPrefix(k, m.Module+" "+r.ID+" ") || k == m.Module+" "+r.ID {
+					listed = k
+				}
+			}
+			if listed != "" {
+				collided[listed] = true
+				break
+			}
+			how := "is or lies inside"
+			if holds {
+				how = "holds"
+			}
+			out = append(out, Finding{5, m.Module, r.ID, fmt.Sprintf("resolves to %q, which %s %s, the directory of the "+
+				"system package %s; place it under /var/lib/mesh/%s (\"place\": \"mesh\") or a path of its own", p, how,
+				s.Path, s.Source, m.Module)})
+			break
+		}
+	}
+	return out
+}
+
+func main() {
+	baseFile := flag.String("base", "", "the trunk's copy of "+SystemKnown+": a line it does not hold is refused")
+	flag.Parse()
+	root := "."
+	if flag.NArg() > 0 {
+		root = flag.Arg(0)
+	}
+	var base []string
+	if *baseFile != "" {
+		lines, err := readLines(*baseFile)
+		if err != nil {
+			fmt.Fprintln(os.Stderr, err)
+			os.Exit(1)
+		}
+		base = append([]string{}, lines...)
+	}
+	found, err := Check(root, base)
 	if err != nil {
 		fmt.Fprintln(os.Stderr, err)
 		os.Exit(1)
 	}
 	for _, f := range found {
-		fmt.Printf("%s: %s: %s (rule %d, novox/hq ADR 0422 §8, issue 1024)\n", f.Module, f.ID, f.Why, f.Rule)
+		cite := "novox/hq ADR 0422 §8, issue 1024"
+		if f.Rule == 5 {
+			cite = "issue 1841"
+		}
+		fmt.Printf("%s: %s: %s (rule %d, %s)\n", f.Module, f.ID, f.Why, f.Rule, cite)
 	}
 	if len(found) > 0 {
 		os.Exit(1)
 	}
-	fmt.Println("owned paths: every directory and archive says how it treats unknown files; no module declares inside another's directory")
+	fmt.Println("owned paths: every directory and archive says how it treats unknown files; no module declares inside another's directory, or in a system package's")
 }

checks/owned/main_test.go

@@ -20,7 +20,10 @@ func manifest(t *testing.T, root, module, body string) {
 
 func check(t *testing.T, root string) []Finding {
 	t.Helper()
-	found, err := Check(root)
+	if _, err := os.Stat(filepath.Join(root, SystemList)); os.IsNotExist(err) {
+		lists(t, root, "/var/lib/pacman pacman: pacman -Qo\n", "")
+	}
+	found, err := Check(root, nil)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -35,6 +38,20 @@ func only(t *testing.T, found []Finding, rule int, module, id string) {
 	}
 }
 
+// lists writes the catalogue's list of system directories and its known exceptions.
+func lists(t *testing.T, root, system, known string) {
+	t.Helper()
+	if err := os.MkdirAll(filepath.Join(root, "checks", "owned"), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(root, SystemList), []byte(system), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(root, SystemKnown), []byte(known), 0o644); err != nil {
+		t.Fatal(err)
+	}
+}
+
 func dir(id, path, rest string) string {
 	return `{"id":"` + id + `","type":"directory","path":"` + path + `"` + rest + `}`
 }
@@ -145,3 +162,87 @@ func TestPlacedDirectoriesOfTwoModulesAreTheirOwn(t *testing.T) {
 		t.Fatalf("refused %+v", found)
 	}
 }
+
+// 1841/AC18: a module's directory that resolves to a /var/lib directory a system package owns, lies inside one or
+// holds one, is refused, whether placed (place ".", or by default beneath the module's own) or stated; a placed
+// directory saying place "mesh" lies under /var/lib/mesh and passes (issue 1841: pacman's state was /var/lib/pacman).
+func TestADirectoryOfASystemPackageIsRefused(t *testing.T) {
+	system := "/var/lib/pacman pacman: pacman -Qo\n/var/lib/systemd/coredump systemd: tmpfiles.d/systemd.conf\n"
+	for name, resources := range map[string][]string{
+		"placed-own":     {`{"id":"state","type":"directory","place":".","unknown":"program"}`},
+		"placed-beneath": {`{"id":"coredump","type":"directory","unknown":"program"}`},
+		"stated-inside":  {dir("d", "/var/lib/pacman/keeper", `,"unknown":"program"`)},
+		"stated-holding": {dir("d", "/var/lib/systemd", `,"unknown":"program"`)},
+		"file-inside": {`{"id":"state","type":"directory","place":"mesh","unknown":"program"}`,
+			`{"id":"f","type":"file","path":"/var/lib/pacman/keeper.json"}`},
+	} {
+		module := map[string]string{"placed-own": "pacman", "placed-beneath": "systemd"}[name]
+		if module == "" {
+			module = "keeper"
+		}
+		root := t.TempDir()
+		lists(t, root, system, "")
+		manifest(t, root, module, mod(module, resources...))
+		found := check(t, root)
+		if len(found) != 1 || found[0].Rule != 5 || found[0].Module != module ||
+			!strings.Contains(found[0].Why, "/var/lib/") || !strings.Contains(found[0].Why, "package") {
+			t.Errorf("%s: found %+v; want one finding of rule 5 for %s naming the path and the package", name, found, module)
+		}
+	}
+	root := t.TempDir()
+	lists(t, root, system, "")
+	manifest(t, root, "pacman", mod("pacman",
+		`{"id":"state","type":"directory","place":"mesh","unknown":"program"}`,
+		`{"id":"f","type":"file","path":"${dir:state}/keeper.json"}`,
+		dir("other", "/var/lib/pacman-other", `,"unknown":"program"`)))
+	if found := check(t, root); len(found) != 0 {
+		t.Fatalf("a directory under /var/lib/mesh/pacman was refused: %+v", found)
+	}
+}
+
+// 1841/AC18: a known exception passes; one that no longer collides is refused, so the list only shrinks; one the trunk's
+// copy does not hold is refused; and an absent list of system directories fails the check rather than passing it.
+func TestKnownSystemExceptionsOnlyShrink(t *testing.T) {
+	system := "/var/lib/systemd systemd: tmpfiles.d/systemd.conf\n"
+	known := "# comment\nsystemd state issue 1873\n"
+	root := t.TempDir()
+	lists(t, root, system, known)
+	manifest(t, root, "systemd", mod("systemd", `{"id":"state","type":"directory","place":".","unknown":"program"}`))
+	if found := check(t, root); len(found) != 0 {
+		t.Fatalf("a known exception was refused: %+v", found)
+	}
+	if found, err := Check(root, []string{"systemd state issue 1873"}); err != nil || len(found) != 0 {
+		t.Fatalf("a known exception held by the trunk was refused: %+v %v", found, err)
+	}
+	if found, err := Check(root, []string{}); err != nil || len(found) != 1 || found[0].Rule != 5 {
+		t.Fatalf("an exception the trunk does not hold passed: %+v %v", found, err)
+	}
+
+	manifest(t, root, "systemd", mod("systemd", `{"id":"state","type":"directory","place":"mesh","unknown":"program"}`))
+	only(t, check(t, root), 5, "systemd", "state")
+
+	root = t.TempDir()
+	manifest(t, root, "a", mod("a"))
+	if err := os.MkdirAll(filepath.Join(root, "checks", "owned"), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(root, SystemList), []byte("# nothing\n"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := Check(root, nil); err == nil {
+		t.Fatal("an empty list of system directories passed")
+	}
+}
+
+// 1841/AC18: the catalogue as it stands passes rule 5 with its own lists.
+func TestTheCatalogueKeepsOutOfSystemDirectories(t *testing.T) {
+	found, err := Check("../..", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, f := range found {
+		if f.Rule == 5 {
+			t.Errorf("%s: %s: %s", f.Module, f.ID, f.Why)
+		}
+	}
+}

checks/owned/reads-outside

@@ -0,0 +1,5 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# Check("../.."): every manifest; its lists are this package's own files.
+modules/*/module.json

checks/owned/realtree_test.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"testing"
+
+	"git.novox.be/novox/mesh-catalog/checks/trunk"
+)
+
+// The script's run of this check over the real tree (novox/hq ADR 0529 clause 2): every rule holds.
+func TestTheCatalogueKeepsEveryRuleOfOwnedPaths(t *testing.T) {
+	found, err := Check("../..", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, f := range found {
+		t.Errorf("%s: %s: %s (rule %d, novox/hq ADR 0422 §8)", f.Module, f.ID, f.Why, f.Rule)
+	}
+}
+
+// And the list of system directories' known exceptions holds no line the trunk's copy at the merge base does not (rule 5). A trunk
+// with none had no list: its first copy. Skipped, and said, where no trunk is beside.
+func TestTheSystemListHoldsNoLineTheTrunksDoesNot(t *testing.T) {
+	path, ok := trunk.Copy(t, "checks/owned/system-known")
+	var base []string
+	if ok {
+		lines, err := readLines(path)
+		if err != nil {
+			t.Fatal(err)
+		}
+		base = append([]string{}, lines...)
+	}
+	found, err := Check("../..", base)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, f := range found {
+		if f.Rule == 5 {
+			t.Errorf("%s: %s: %s (rule %d, issue 1841)", f.Module, f.ID, f.Why, f.Rule)
+		}
+	}
+}

checks/owned/system

@@ -0,0 +1,23 @@
+# The directories under /var/lib that a system package owns (rule 5 of checks/owned, issue 1841). A module's
+# directory, placed or stated, may not be one of these, lie inside one or hold one: the package's program and the
+# package manager keep their own files there, and the node-engine would judge, chmod or chown the directory.
+#
+# One line per directory: "<path> <package>: <how it was read>". Captured on the workstation on 2026-10-22, through
+# the mesh: pacman's own database by `pacman -Qo` (pacman_owns), the rest from the `d`, `D` and `Q` lines of
+# /usr/lib/tmpfiles.d (node-reads.search for "/var/lib/"). A directory found to belong to a package is added here.
+/var/lib/pacman pacman: pacman -Qo /var/lib/pacman/ (pacman 7.1.0)
+/var/lib/alsa alsa-utils: tmpfiles.d/alsa-utils.conf
+/var/lib/colord colord: tmpfiles.d/colord.conf
+/var/lib/containers podman: tmpfiles.d/podman.conf
+/var/lib/dbus dbus: tmpfiles.d/dbus.conf
+/var/lib/geoclue geoclue: tmpfiles.d/geoclue.conf
+/var/lib/lastlog util-linux: tmpfiles.d/lastlog2.conf
+/var/lib/libuuid util-linux: tmpfiles.d/uuidd.conf
+/var/lib/machines systemd: tmpfiles.d/systemd-nspawn.conf
+/var/lib/openvpn/chroot networkmanager-openvpn: tmpfiles.d/nm-openvpn-tmpfiles.conf
+/var/lib/portables systemd: tmpfiles.d/portables.conf
+/var/lib/postgres postgresql: tmpfiles.d/postgresql.conf
+/var/lib/private systemd: tmpfiles.d/systemd.conf
+/var/lib/rpcbind rpcbind: tmpfiles.d/rpcbind.conf
+/var/lib/systemd systemd: tmpfiles.d/systemd.conf
+/var/lib/tpm2-tss/system/keystore tpm2-tss: tmpfiles.d/tpm2-tss-fapi.conf

checks/owned/system-known

@@ -0,0 +1,5 @@
+# Modules whose directory lies in a system package's directory today (rule 5 of checks/owned, issue 1841), each with
+# the issue that moves it out: "<module> <resource id> issue <number>". This list only shrinks: a line whose module
+# no longer collides is refused, and so is a line the trunk's copy does not hold.
+postgres state issue 1873
+systemd state issue 1873

checks/particulars/main.go

@@ -2,8 +2,9 @@
 // issue 1838): a module is for any mesh, so no manifest, file, code string, identifier, comment, test name or
 // fixture of a covered module names a node of this one.
 //
-// The names are in the file `particulars` at the catalogue's root, one a line, `#` comments — the one place
-// they may be written. The modules covered are in `covered` at checks/particulars/covered, one a line. A name is matched
+// The names are the mesh's own, not the repository's: the checker hands them in the environment value
+// MESH_NODE_NAMES, comma-separated, from the node records it reads (novox/hq ADR 0567 §16). A run with none fails
+// loudly, since it would pass on anything. The modules covered are in `covered` at checks/particulars/covered, one a line. A name is matched
 // whole and in any case; a hyphen, an underscore or a CamelCase boundary parts one, so a longer word holding a name is another word.
 // The forge is not a node name: its host (git.novox.be) and the organisation path (novox/<repo>) are blanked
 // before a line is read.
@@ -34,14 +35,28 @@ func main() {
 	if len(os.Args) > 1 {
 		root = os.Args[1]
 	}
-	os.Exit(check(root))
+	os.Exit(check(root, namesFromEnv()))
+}
+
+// NamesEnv is the environment value that carries the mesh's node names (mesh-sdk delivery.NodeNamesEnv).
+const NamesEnv = "MESH_NODE_NAMES"
+
+// namesFromEnv is the names NamesEnv holds, comma-separated, trimmed, empty entries left out.
+func namesFromEnv() []string {
+	var out []string
+	for _, n := range strings.Split(os.Getenv(NamesEnv), ",") {
+		if n = strings.TrimSpace(n); n != "" {
+			out = append(out, n)
+		}
+	}
+	return out
 }
 
 // check runs the check over a catalogue and returns the exit code: 0 clean, 1 a finding, 2 a list unreadable.
-func check(root string) int {
-	names, err := readList(filepath.Join(root, "particulars"))
-	if err == nil && len(names) == 0 {
-		err = fmt.Errorf("particulars lists no name — the check would pass on anything")
+func check(root string, names []string) int {
+	var err error
+	if len(names) == 0 {
+		err = fmt.Errorf("no node names (%s is empty) — the check would pass on anything", NamesEnv)
 	}
 	var covered []string
 	if err == nil {

checks/particulars/main_test.go

@@ -74,26 +74,24 @@ func TestANodeNamedPathIsRefusedThroughRun(t *testing.T) {
 	}
 }
 
-func TestCheckReturnsOneOnAFindingAndTwoOnAnUnreadableList(t *testing.T) {
+func TestCheckReturnsOneOnAFindingAndTwoOnNoNames(t *testing.T) {
 	root := t.TempDir()
 	write := func(p, s string) {
 		p = filepath.Join(root, p)
 		os.MkdirAll(filepath.Dir(p), 0o755)
 		os.WriteFile(p, []byte(s), 0o644)
 	}
-	write("particulars", "ace\n")
 	write("checks/particulars/covered", "kernel\n")
 	write("modules/kernel/a", "clean\n")
-	if got := check(root); got != 0 {
+	if got := check(root, []string{"ace"}); got != 0 {
 		t.Errorf("clean = %d, want 0", got)
 	}
 	write("modules/kernel/a", "on ace\n")
-	if got := check(root); got != 1 {
+	if got := check(root, []string{"ace"}); got != 1 {
 		t.Errorf("finding = %d, want 1", got)
 	}
-	os.Remove(filepath.Join(root, "particulars"))
-	if got := check(root); got != 2 {
-		t.Errorf("no list = %d, want 2", got)
+	if got := check(root, nil); got != 2 {
+		t.Errorf("no names = %d, want 2", got)
 	}
 }
 
@@ -114,3 +112,13 @@ func TestOnlyCoveredModulesAreRead(t *testing.T) {
 		t.Errorf("got %v", got)
 	}
 }
+
+// The script's run of this check over the real tree (novox/hq ADR 0529 clause 2): no node name of this mesh in a covered module.
+func TestTheCoveredModulesNameNoNode(t *testing.T) {
+	if _, set := os.LookupEnv(NamesEnv); !set {
+		t.Skip("ADR 0567 §16: this checker hands no node names (before D14 is delivered); the skip goes once it is")
+	}
+	if code := check("../..", namesFromEnv()); code != 0 {
+		t.Fatalf("the check of the real catalogue exits %d (see what it printed above)", code)
+	}
+}

checks/particulars/reads-outside

@@ -0,0 +1,5 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# check("../.."): every file of the modules the covered list names. The node names come from the run (MESH_NODE_NAMES).
+modules

checks/paths/go.mod

@@ -1,3 +1,7 @@
 module git.novox.be/novox/mesh-catalog/checks/paths
 
 go 1.22
+
+require git.novox.be/novox/mesh-catalog/checks/trunk v0.0.0
+
+replace git.novox.be/novox/mesh-catalog/checks/trunk => ../trunk

checks/paths/main.go

@@ -251,7 +251,8 @@ func main() {
 	}
 	var grown []string
 	if baseDir == "" {
-		fmt.Println("NOT COMPARED: no base branch's lists were given, so additions to them were not judged")
+		fmt.Fprintln(os.Stderr, "NOT COMPARED: no base branch's lists were given (-base <dir>), so additions to them were not judged; that is a failure, not a pass (issue 1295)")
+		os.Exit(2)
 	} else {
 		baseShared, _, err1 := list(filepath.Join(baseDir, "shared"))
 		baseKnown, _, err2 := list(filepath.Join(baseDir, "known"))

checks/paths/reads-outside

@@ -0,0 +1,5 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# Check("../.."): every manifest and every file of a module.
+modules

checks/paths/realtree_test.go

@@ -0,0 +1,63 @@
+package main
+
+import (
+	"path/filepath"
+	"testing"
+
+	"git.novox.be/novox/mesh-catalog/checks/trunk"
+)
+
+// The script's run of this check over the real tree (novox/hq ADR 0529 clause 2): no module names another's state on its machine,
+// and the known list holds only what still occurs.
+func TestNoModuleNamesAnothersState(t *testing.T) {
+	root := filepath.Join("..", "..")
+	found, err := Check(root)
+	if err != nil {
+		t.Fatal(err)
+	}
+	shared, _, err := list("shared")
+	if err != nil {
+		t.Fatal(err)
+	}
+	known, _, err := list("known")
+	if err != nil {
+		t.Fatal(err)
+	}
+	refused, gone := Judge(found, shared, known)
+	for _, f := range refused {
+		t.Error(f)
+	}
+	for _, k := range gone {
+		t.Errorf("%q is in checks/paths/known and no longer occurs: take it out, so it cannot come back", k)
+	}
+}
+
+// And neither list gains a line the trunk's copies at the merge base do not hold, unless the line says why after `# allow:`. Fails, saying
+// NOT COMPARED, where no trunk is beside (issue 1295).
+func TestTheListsOfPathsHoldNoLineTheTrunksDoNot(t *testing.T) {
+	sharedPath, okShared := trunk.Copy(t, "checks/paths/shared")
+	knownPath, okKnown := trunk.Copy(t, "checks/paths/known")
+	if !okShared || !okKnown {
+		t.Log("the trunk holds not both lists: their first copies, to which nothing was added")
+		return
+	}
+	shared, sharedWhy, err := list("shared")
+	if err != nil {
+		t.Fatal(err)
+	}
+	known, knownWhy, err := list("known")
+	if err != nil {
+		t.Fatal(err)
+	}
+	baseShared, _, err := list(sharedPath)
+	if err != nil {
+		t.Fatal(err)
+	}
+	baseKnown, _, err := list(knownPath)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, g := range append(Grown("shared", shared, sharedWhy, baseShared), Grown("known", known, knownWhy, baseKnown)...) {
+		t.Error(g)
+	}
+}

checks/paths/shared

@@ -1,3 +1,4 @@
 # Paths every program on a machine reads as the machine's own, not as a message from the module that
 # writes them (checks/paths, novox/hq ADR 0260). One per line, with why.
 /etc/hosts  # every resolver on the machine reads it; the hostname module writes it for all of them
+/var/lib/mesh-build-node-cache  # allow: the Go build module gives its integration level the node's installed Node toolchains read-only, so the Node build module's tests build offline (issue 1891, ADR 0533)

checks/planhands/go.mod

@@ -0,0 +1,3 @@
+module checks/planhands
+
+go 1.26.0

checks/planhands/planhands.go

@@ -0,0 +1,48 @@
+// Package planhands refuses a module's line that takes a plan existing for its module handed to the provisioner (issue
+// 774). Whether a plan hands its module is mesh-sdk's one rule, catalogue.Plan.Hands: since the seat mesh-provisioner keys a
+// provision its provider's helper answers for a module not handed, a plan naming provisions alone exists for modules
+// whose files and own secrets stay their node's (on 2026-10-30 the vault read every such plan as handed and answered
+// twenty modules' own secrets to nobody, and the provisioner client refused each as a plan it could not act on). A line
+// that tests whether a plan exists either asks Hands on the same line, or says "not handing": it reads only who binds
+// whom, or that there is no plan at all.
+package planhands
+
+import (
+	"fmt"
+	"io/fs"
+	"os"
+	"path/filepath"
+	"regexp"
+	"sort"
+	"strings"
+)
+
+// existence is a test of whether an assignment's or a plan's `provisioning` is there: nil, or an empty raw value.
+var existence = regexp.MustCompile(`Provisioning\s*[!=]=\s*nil|len\([^)]*Provisioning\)\s*[!=]=\s*0`)
+
+// Problems is each such line under root's modules/ that neither asks Hands nor says "not handing", as
+// `path:line: text`, sorted. Test files are left out: a test may build a plan by hand.
+func Problems(root string) ([]string, error) {
+	var out []string
+	err := filepath.WalkDir(filepath.Join(root, "modules"), func(p string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		if d.IsDir() || !strings.HasSuffix(p, ".go") || strings.HasSuffix(p, "_test.go") {
+			return nil
+		}
+		raw, err := os.ReadFile(p)
+		if err != nil {
+			return err
+		}
+		rel, _ := filepath.Rel(root, p)
+		for i, line := range strings.Split(string(raw), "\n") {
+			if existence.MatchString(line) && !strings.Contains(line, ".Hands()") && !strings.Contains(line, "not handing") {
+				out = append(out, fmt.Sprintf("%s:%d: %s", rel, i+1, strings.TrimSpace(line)))
+			}
+		}
+		return nil
+	})
+	sort.Strings(out)
+	return out, err
+}

checks/planhands/planhands_test.go

@@ -0,0 +1,45 @@
+package planhands
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+// A line that takes a plan existing for its module handed is refused and named; one that asks Hands, one marked "not
+// handing" and any test file pass; and the real catalogue is clean.
+func TestNoModuleTakesAPlanExistingForItsModuleHanded(t *testing.T) {
+	root := t.TempDir()
+	for f, body := range map[string]string{
+		"modules/vault/own.go":         "if a.Provisioning != nil {\n",
+		"modules/client/plan.go":       "if len(a.Provisioning) == 0 {\n",
+		"modules/vault/rule.go":        "return a.Provisioning != nil && a.Provisioning.Hands(), nil\n",
+		"modules/client/binds.go":      "if a.Provisioning != nil { // binds, not handing\n",
+		"modules/vault/own_test.go":    "if a.Provisioning == nil {\n",
+		"modules/client/notgo/plan.md": "if a.Provisioning == nil {\n",
+	} {
+		p := filepath.Join(root, f)
+		if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
+			t.Fatal(err)
+		}
+		if err := os.WriteFile(p, []byte(body), 0o644); err != nil {
+			t.Fatal(err)
+		}
+	}
+	got, err := Problems(root)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(got) != 2 || !strings.HasPrefix(got[0], "modules/client/plan.go:1:") || !strings.HasPrefix(got[1], "modules/vault/own.go:1:") {
+		t.Fatalf("refused %v, wanted the client's and the vault's existence tests alone", got)
+	}
+	real, err := Problems(filepath.Join("..", ".."))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(real) > 0 {
+		t.Errorf("a module takes a plan existing for its module handed; ask catalogue.Plan.Hands, or mark a line that reads "+
+			"only who binds whom \"not handing\":\n%s", strings.Join(real, "\n"))
+	}
+}

checks/planhands/reads-outside

@@ -0,0 +1,3 @@
+# What these tests read outside their package, as paths from the repository's root (issue 1936).
+# every module whole (a directory is read whole, so a module's Go source at any depth enters the digest), for a line that takes a plan existing for its module handed.
+modules

checks/predefined/go.mod

@@ -1,3 +1,7 @@
 module git.novox.be/novox/mesh-catalog/checks/predefined
 
 go 1.22
+
+require git.novox.be/novox/mesh-catalog/checks/trunk v0.0.0
+
+replace git.novox.be/novox/mesh-catalog/checks/trunk => ../trunk

checks/predefined/reads-outside

@@ -0,0 +1,6 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# the root's list of predefined keys and every manifest that names one.
+predefined.json
+modules/*/module.json

checks/predefined/realtree_test.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"path/filepath"
+	"sort"
+	"testing"
+
+	"git.novox.be/novox/mesh-catalog/checks/trunk"
+)
+
+// The script's run of this check over the real tree (novox/hq ADR 0529 clause 2): predefined.json removes no key a module still
+// names, judged against the trunk's copy at the merge base. A trunk with none had no keys; with no trunk to read, nothing can be
+// seen removed, and the test says so.
+func TestThePredefinedListRemovesNoKeyAModuleStillNames(t *testing.T) {
+	tree, err := Keys(filepath.Join("..", "..", File))
+	if err != nil {
+		t.Fatal(err)
+	}
+	path, ok := trunk.Copy(t, File)
+	if !ok {
+		t.Log("no trunk copy of " + File + ": no removal can be seen")
+		return
+	}
+	base, err := Keys(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	named, err := Named(filepath.Join("..", ".."))
+	if err != nil {
+		t.Fatal(err)
+	}
+	removed := Removed(base, tree, named)
+	keys := make([]string, 0, len(removed))
+	for k := range removed {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	for _, k := range keys {
+		t.Errorf("%q is removed from %s and still named by %v", k, File, removed[k])
+	}
+}

checks/readable/go.mod

@@ -0,0 +1,5 @@
+module checks/readable
+
+go 1.26.0
+
+require git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261030001116-2da0de75c3f0

checks/readable/go.sum

@@ -0,0 +1,2 @@
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261030001116-2da0de75c3f0 h1:lKU3HjNXGiVbLW2hUgFjU/TMTUYMlNnnmZxG5T7biQA=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261030001116-2da0de75c3f0/go.mod h1:ouERNpZizzwZ0HLEtAypsY9FR20FyUgUYRni6J7kVCY=

checks/readable/main.go

@@ -0,0 +1,333 @@
+// Command readable refuses a catalogue where a module reads another module's state that the owner does not announce
+// readable (novox/hq ADR 0495 clause 3, issue 1790): the controller grants a read only from the owner's announcement, so
+// such a read is refused on the live mesh, said only in the controller's journal. The sweep of 2026-10-30 (issue 774)
+// found three: gitea's `bound` (read by mesh-provisioner, so no forge account was bound), disk-load's `readings` (read by
+// restic, nfs-server and mounts) and restic's `good` (read by the self-check). The merge gate's check of reads against
+// the owner's manifest went with clause 5, and announcetest holds a module to its own list, not to its readers.
+//
+// An owner announces from its code. A Go module announces when its code imports mesh-sdk's go/announce: every
+// announce.State literal there is read, its Name a string, a constant of the package, or a constant of mesh-sdk this
+// check knows (Known). A TypeScript module announces when its code says the event `states` or calls the SDK's keeps:
+// every `{ name: "...", readable: true }` there is read. An owner that announces nothing from code is read as before
+// on the mesh, and is not judged; neither is an owner outside the catalogue (another repository's).
+//
+//	go run . <catalog root>
+//
+// Exits 1 on a finding.
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"go/ast"
+	"go/parser"
+	"go/token"
+	"os"
+	"path/filepath"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+
+	"git.novox.be/novox/mesh-sdk/go/health"
+)
+
+// Known are the mesh-sdk constants an announcement may name a state by, by the selector the code writes.
+var Known = map[string]string{
+	"health.GoodState":     health.GoodState,
+	"health.ReadingsState": health.ReadingsState,
+}
+
+const announcePkg = `"git.novox.be/novox/mesh-sdk/go/announce"`
+
+// Announced is what one owner's code announces: each state, readable or not.
+type Announced map[string]bool
+
+// Findings is every refusal in the catalogue at root, sorted.
+func Findings(root string) ([]string, error) {
+	manifests, err := filepath.Glob(filepath.Join(root, "modules", "*", "module.json"))
+	if err != nil {
+		return nil, err
+	}
+	dirs := map[string]string{}
+	reads := map[string][]string{}
+	for _, path := range manifests {
+		raw, err := os.ReadFile(path)
+		if err != nil {
+			return nil, err
+		}
+		var m struct {
+			Module string            `json:"module"`
+			Reads  []json.RawMessage `json:"reads"`
+		}
+		if err := json.Unmarshal(raw, &m); err != nil {
+			return nil, fmt.Errorf("%s: %w", path, err)
+		}
+		dirs[m.Module] = filepath.Dir(path)
+		for _, r := range m.Reads {
+			var s string
+			if json.Unmarshal(r, &s) == nil {
+				reads[m.Module] = append(reads[m.Module], s)
+			}
+		}
+	}
+	var out []string
+	owners := map[string]Announced{}
+	for reader, rs := range reads {
+		for _, r := range rs {
+			owner, state, ok := strings.Cut(r, ".")
+			dir, inCatalogue := dirs[owner]
+			if !ok || !inCatalogue || owner == reader {
+				continue
+			}
+			a, seen := owners[owner]
+			if !seen {
+				var problems []string
+				a, problems, err = AnnouncedBy(dir)
+				if err != nil {
+					return nil, err
+				}
+				owners[owner] = a
+				for _, p := range problems {
+					out = append(out, owner+": "+p)
+				}
+			}
+			if a == nil {
+				continue // announces nothing from code: read as before
+			}
+			readable, keeps := a[state]
+			switch {
+			case !keeps:
+				out = append(out, fmt.Sprintf("%s reads %s.%s, which %s's code does not announce: the read is refused on the mesh", reader, owner, state, owner))
+			case !readable:
+				out = append(out, fmt.Sprintf("%s reads %s.%s, which %s's code announces not readable: the read is refused on the mesh; announce it readable", reader, owner, state, owner))
+			}
+		}
+	}
+	sort.Strings(out)
+	return dedupe(out), nil
+}
+
+func dedupe(in []string) []string {
+	var out []string
+	for i, s := range in {
+		if i == 0 || s != in[i-1] {
+			out = append(out, s)
+		}
+	}
+	return out
+}
+
+var (
+	tsAnnounces = regexp.MustCompile(`emit\(\s*"states"|\bkeeps\(`)
+	tsState     = regexp.MustCompile(`\{\s*name:\s*"([a-z0-9][a-z0-9-]*)"\s*(,\s*readable:\s*(true|false)\s*)?\}`)
+)
+
+// AnnouncedBy is what the module in dir announces from its code, nil when it announces nothing; problems are
+// announcements whose state's name cannot be read.
+func AnnouncedBy(dir string) (Announced, []string, error) {
+	var out Announced
+	var problems []string
+	pkgs := map[string][]*ast.File{}
+	fset := token.NewFileSet()
+	err := filepath.WalkDir(dir, func(path string, d os.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		if d.IsDir() {
+			if n := d.Name(); path != dir && (n == "node_modules" || n == "dist" || n == "test" || n == "testdata" || strings.HasPrefix(n, ".")) {
+				return filepath.SkipDir
+			}
+			return nil
+		}
+		name := d.Name()
+		switch {
+		case strings.HasSuffix(name, ".go") && !strings.HasSuffix(name, "_test.go"):
+			f, err := parser.ParseFile(fset, path, nil, 0)
+			if err != nil {
+				return err
+			}
+			pkgs[filepath.Dir(path)] = append(pkgs[filepath.Dir(path)], f)
+		case strings.HasSuffix(name, ".ts") && !strings.HasSuffix(name, ".d.ts") && !strings.HasSuffix(name, ".test.ts"):
+			raw, err := os.ReadFile(path)
+			if err != nil {
+				return err
+			}
+			if !tsAnnounces.Match(raw) && !strings.Contains(string(raw), "KEPT") {
+				return nil
+			}
+			for _, m := range tsState.FindAllStringSubmatch(string(raw), -1) {
+				if out == nil {
+					out = Announced{}
+				}
+				out[m[1]] = out[m[1]] || m[3] == "true"
+			}
+		}
+		return nil
+	})
+	if err != nil {
+		return nil, nil, err
+	}
+	for _, files := range pkgs {
+		imports := false
+		consts := map[string]ast.Expr{}
+		for _, f := range files {
+			for _, im := range f.Imports {
+				if im.Path.Value == announcePkg && (im.Name == nil || im.Name.Name == "announce") {
+					imports = true
+				}
+			}
+			for _, decl := range f.Decls {
+				g, ok := decl.(*ast.GenDecl)
+				if !ok || g.Tok != token.CONST {
+					continue
+				}
+				for _, spec := range g.Specs {
+					v := spec.(*ast.ValueSpec)
+					for i, n := range v.Names {
+						if i < len(v.Values) {
+							consts[n.Name] = v.Values[i]
+						}
+					}
+				}
+			}
+		}
+		if !imports {
+			continue
+		}
+		if out == nil {
+			out = Announced{}
+		}
+		for _, f := range files {
+			ast.Inspect(f, func(n ast.Node) bool {
+				lit, ok := n.(*ast.CompositeLit)
+				if !ok {
+					return true
+				}
+				states := []*ast.CompositeLit{}
+				switch {
+				case isAnnounceState(lit.Type):
+					states = append(states, lit)
+				case isStateSlice(lit.Type):
+					for _, e := range lit.Elts {
+						if c, ok := e.(*ast.CompositeLit); ok && (c.Type == nil || isAnnounceState(c.Type)) {
+							states = append(states, c)
+						}
+					}
+				default:
+					return true
+				}
+				for _, s := range states {
+					name, readable, problem := stateOf(s, consts)
+					if problem != "" {
+						problems = append(problems, fmt.Sprintf("%s: %s", fset.Position(s.Pos()), problem))
+						continue
+					}
+					out[name] = out[name] || readable
+				}
+				return false
+			})
+		}
+	}
+	return out, problems, nil
+}
+
+func isAnnounceState(e ast.Expr) bool {
+	s, ok := e.(*ast.SelectorExpr)
+	if !ok {
+		return false
+	}
+	x, ok := s.X.(*ast.Ident)
+	return ok && x.Name == "announce" && s.Sel.Name == "State"
+}
+
+func isStateSlice(e ast.Expr) bool {
+	a, ok := e.(*ast.ArrayType)
+	return ok && isAnnounceState(a.Elt)
+}
+
+// stateOf is one announce.State literal's name and whether it is readable (Readable true, or Readers named).
+func stateOf(lit *ast.CompositeLit, consts map[string]ast.Expr) (string, bool, string) {
+	var name string
+	var readable bool
+	named := false
+	for _, e := range lit.Elts {
+		kv, ok := e.(*ast.KeyValueExpr)
+		if !ok {
+			return "", false, "an announce.State without field names cannot be read; name its fields"
+		}
+		key, _ := kv.Key.(*ast.Ident)
+		if key == nil {
+			continue
+		}
+		switch key.Name {
+		case "Name":
+			v, ok := resolve(kv.Value, consts, 0)
+			if !ok {
+				return "", false, fmt.Sprintf("the state's name %s cannot be read: name it by a string, a constant of the package, or a mesh-sdk constant in checks/readable's Known", exprString(kv.Value))
+			}
+			name, named = v, true
+		case "Readable":
+			if id, ok := kv.Value.(*ast.Ident); ok {
+				readable = readable || id.Name == "true"
+			}
+		case "Readers":
+			readable = true
+		}
+	}
+	if !named {
+		return "", false, "an announce.State without a Name"
+	}
+	return name, readable, ""
+}
+
+func resolve(e ast.Expr, consts map[string]ast.Expr, depth int) (string, bool) {
+	if depth > 8 {
+		return "", false
+	}
+	switch v := e.(type) {
+	case *ast.BasicLit:
+		if v.Kind == token.STRING {
+			s, err := strconv.Unquote(v.Value)
+			return s, err == nil
+		}
+	case *ast.Ident:
+		if c, ok := consts[v.Name]; ok {
+			return resolve(c, consts, depth+1)
+		}
+	case *ast.SelectorExpr:
+		s, ok := Known[exprString(v)]
+		return s, ok
+	}
+	return "", false
+}
+
+func exprString(e ast.Expr) string {
+	switch v := e.(type) {
+	case *ast.Ident:
+		return v.Name
+	case *ast.SelectorExpr:
+		return exprString(v.X) + "." + v.Sel.Name
+	case *ast.BasicLit:
+		return v.Value
+	}
+	return fmt.Sprintf("%T", e)
+}
+
+func main() {
+	root := "."
+	if len(os.Args) > 1 {
+		root = os.Args[1]
+	}
+	found, err := Findings(root)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(2)
+	}
+	for _, f := range found {
+		fmt.Println(f)
+	}
+	if len(found) > 0 {
+		os.Exit(1)
+	}
+}

checks/readable/main_test.go

@@ -0,0 +1,90 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+// A read of another module's state is refused here when the owner's code announces that state not readable, or not at
+// all (the sweep of 2026-10-30, issue 774); an owner that announces nothing from code, or lives in another repository,
+// is not judged.
+func TestFindings(t *testing.T) {
+	const goOwner = "package main\n\nimport \"git.novox.be/novox/mesh-sdk/go/announce\"\n\n"
+	for _, row := range []struct {
+		name  string
+		files map[string]string
+		want  string // empty: clean
+	}{
+		{"go, readable by a constant", map[string]string{
+			"modules/r/module.json":        `{"module":"r","reads":["o.s"]}`,
+			"modules/o/module.json":        `{"module":"o"}`,
+			"modules/o/cmd/o/main.go":      goOwner + "const S = \"s\"\n\nvar _ = announce.State{Name: S, Readable: true}\n",
+			"modules/o/cmd/o/main_test.go": goOwner + "var _ = announce.State{Name: \"s\"}\n"}, ""},
+		{"go, not readable", map[string]string{
+			"modules/r/module.json":   `{"module":"r","reads":["o.s"]}`,
+			"modules/o/module.json":   `{"module":"o"}`,
+			"modules/o/cmd/o/main.go": goOwner + "var Kept = []announce.State{{Name: \"t\", Readable: true}, {Name: \"s\"}}\n"},
+			"r reads o.s, which o's code announces not readable"},
+		{"go, a known mesh-sdk name and readers", map[string]string{
+			"modules/r/module.json":   `{"module":"r","reads":["o.good","o.s"]}`,
+			"modules/o/module.json":   `{"module":"o"}`,
+			"modules/o/cmd/o/main.go": goOwner + "var _ = []announce.State{{Name: health.GoodState, Readable: true}, {Name: \"s\", Readers: []string{\"r\"}}}\n"}, ""},
+		{"go, a name that cannot be read", map[string]string{
+			"modules/r/module.json":   `{"module":"r","reads":["o.s"]}`,
+			"modules/o/module.json":   `{"module":"o"}`,
+			"modules/o/cmd/o/main.go": goOwner + "var _ = announce.State{Name: other.S, Readable: true}\n"},
+			"the state's name other.S cannot be read"},
+		{"go, a state not announced", map[string]string{
+			"modules/r/module.json":   `{"module":"r","reads":["o.s"]}`,
+			"modules/o/module.json":   `{"module":"o"}`,
+			"modules/o/cmd/o/main.go": goOwner + "var _ = announce.State{Name: \"t\"}\n"},
+			"r reads o.s, which o's code does not announce"},
+		{"typescript, not readable", map[string]string{
+			"modules/r/module.json": `{"module":"r","reads":["o.bound"]}`,
+			"modules/o/module.json": `{"module":"o"}`,
+			"modules/o/kept.ts":     `export const KEPT = [{ name: "announced" }, { name: "bound" }];`},
+			"r reads o.bound, which o's code announces not readable"},
+		{"typescript, readable", map[string]string{
+			"modules/r/module.json": `{"module":"r","reads":["o.bound"]}`,
+			"modules/o/module.json": `{"module":"o"}`,
+			"modules/o/index.ts":    `await keeps([{ name: "bound", readable: true }]);`}, ""},
+		{"an owner that announces nothing, and one outside the catalogue", map[string]string{
+			"modules/r/module.json":   `{"module":"r","reads":["o.s","mesh-controller.lease"]}`,
+			"modules/o/module.json":   `{"module":"o"}`,
+			"modules/o/cmd/o/main.go": "package main\n\nvar _ = 1\n"}, ""},
+	} {
+		t.Run(row.name, func(t *testing.T) {
+			root := t.TempDir()
+			for path, text := range row.files {
+				p := filepath.Join(root, path)
+				if err := os.MkdirAll(filepath.Dir(p), 0o755); err != nil {
+					t.Fatal(err)
+				}
+				if err := os.WriteFile(p, []byte(text), 0o644); err != nil {
+					t.Fatal(err)
+				}
+			}
+			got, err := Findings(root)
+			if err != nil {
+				t.Fatal(err)
+			}
+			joined := strings.Join(got, "\n")
+			if row.want == "" && len(got) != 0 || row.want != "" && !strings.Contains(joined, row.want) {
+				t.Errorf("findings %q, want %q", joined, row.want)
+			}
+		})
+	}
+}
+
+// The catalogue itself: every state a module reads of another module that announces from code is announced readable.
+func TestTheCatalogueReadsOnlyWhatItsOwnersAnnounceReadable(t *testing.T) {
+	got, err := Findings(filepath.Join("..", ".."))
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, f := range got {
+		t.Error(f)
+	}
+}

checks/readable/reads-outside

@@ -0,0 +1,6 @@
+# What these tests read outside their package, as paths from the repository's root (issue 1936).
+# every manifest, for what it reads; and every module's Go and TypeScript code, for the states it announces.
+modules/*/module.json
+modules/*/cmd
+modules/*/*.go
+modules/*/*.ts

checks/secrets/go.mod

@@ -1,3 +1,7 @@
 module git.novox.be/novox/mesh-catalog/checks/secrets
 
 go 1.22
+
+require git.novox.be/novox/mesh-catalog/checks/trunk v0.0.0
+
+replace git.novox.be/novox/mesh-catalog/checks/trunk => ../trunk

checks/secrets/reads-outside

@@ -0,0 +1,5 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# Check("../.."): every manifest and the files it names.
+modules

checks/secrets/realtree_test.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+	"testing"
+
+	"git.novox.be/novox/mesh-catalog/checks/trunk"
+)
+
+// The script's run of this check over the real tree (novox/hq ADR 0529 clause 2): the known list gains no line the trunk's copy
+// at the merge base does not hold. Without a trunk copy the lines in seed are the trunk's.
+func TestTheKnownListHoldsNoLineTheTrunksDoesNot(t *testing.T) {
+	known, err := Known("known")
+	if err != nil {
+		t.Fatal(err)
+	}
+	base := seed
+	if path, ok := trunk.Copy(t, "checks/secrets/known"); ok {
+		if base, err = Known(path); err != nil {
+			t.Fatal(err)
+		}
+	}
+	for _, line := range Added(known, base) {
+		t.Errorf("checks/secrets/known gains %q, which the trunk's copy does not hold: the list only shrinks — protect the key instead (novox/hq issue 342)", line)
+	}
+}

checks/sshdir/reads-outside

@@ -0,0 +1,5 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# Check("../.."): every manifest.
+modules/*/module.json

checks/templates/go.mod

@@ -1,3 +1,7 @@
 module git.novox.be/novox/mesh-catalog/checks/templates
 
 go 1.22
+
+require git.novox.be/novox/mesh-catalog/checks/trunk v0.0.0
+
+replace git.novox.be/novox/mesh-catalog/checks/trunk => ../trunk

checks/templates/reads-outside

@@ -0,0 +1,5 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# Check("../.."): every manifest and its templates.
+modules

checks/templates/realtree_test.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"testing"
+
+	"git.novox.be/novox/mesh-catalog/checks/trunk"
+)
+
+// The script's comparison of this list with the trunk's (novox/hq ADR 0529 clause 2): the list of modules keeping file text inline
+// gains none the trunk's copy at the merge base does not hold. The catalogue itself is judged against the list by
+// TestTheCatalogueKeepsFileTextInlineOnlyWhereListed. Skipped, and said, where no trunk is beside.
+func TestTheInlineListHoldsNoModuleTheTrunksDoesNot(t *testing.T) {
+	path, ok := trunk.Copy(t, "checks/templates/inline")
+	found, err := Check("../..")
+	if err != nil {
+		t.Fatal(err)
+	}
+	listed, err := Listed(listFile)
+	if err != nil {
+		t.Fatal(err)
+	}
+	base := seed
+	if ok {
+		if base, err = Listed(path); err != nil {
+			t.Fatal(err)
+		}
+	}
+	_, _, added := Judge(found, listed, base)
+	for _, m := range added {
+		t.Errorf("checks/templates/inline gains %s, which the trunk's copy does not hold: the list only shrinks", m)
+	}
+}

checks/toolchains/reads-outside

@@ -0,0 +1,5 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# Check("../.."): every manifest.
+modules/*/module.json

checks/trunk/go.mod

@@ -0,0 +1,3 @@
+module git.novox.be/novox/mesh-catalog/checks/trunk
+
+go 1.22

checks/trunk/trunk.go

@@ -0,0 +1,65 @@
+// Package trunk is where a catalogue check finds the trunk's copy of a list that may only shrink (novox/hq ADR 0529 clause 2):
+// the file as the catalogue's base commit holds it, to judge a change's list against.
+//
+// The checker fetches the change's own repository at its base commit beside the change, as it fetches a sibling, and says where
+// in MESH_CHECK_BESIDE; the copy is under the repository's name (the same convention the other repositories' tests use). With
+// MESH_CHECK_BESIDE unset, or set without the catalogue's copy in it, the test fails saying NOT COMPARED WITH THE TRUNK and
+// why: the checker places the change's own repository since R4g (issue 1295), so a missing copy is a fault, never a pass. A trunk that holds no such file had
+// none: the list's first copy, which nothing was added to.
+package trunk
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+// Repository is the catalogue's name beside a check.
+const Repository = "mesh-catalog"
+
+// BesideEnv is where a merge check says the clones beside the one checked are.
+const BesideEnv = "MESH_CHECK_BESIDE"
+
+// Copy is the trunk's copy of the file at rel (a path from the catalogue's root), written to a file of the test's own: its path,
+// and whether the trunk holds one (false: its first copy). It fails the test when no copy of the catalogue is beside.
+func Copy(t testing.TB, rel string) (string, bool) {
+	t.Helper()
+	raw, found, err := Read(rel)
+	switch {
+	case err != nil:
+		t.Fatal(err)
+	case !found:
+		t.Logf("the trunk holds no %s: its first copy", rel)
+		return "", false
+	}
+	path := filepath.Join(t.TempDir(), filepath.Base(rel))
+	if err := os.WriteFile(path, raw, 0o644); err != nil {
+		t.Fatal(err)
+	}
+	return path, true
+}
+
+// Read is the trunk's copy of rel and whether the trunk holds one. err is a trunk not beside the check (MESH_CHECK_BESIDE unset,
+// or without the catalogue's directory), or a copy unreadable: a comparison that cannot be made is never a pass.
+func Read(rel string) (content []byte, found bool, err error) {
+	beside := os.Getenv(BesideEnv)
+	if beside == "" {
+		return nil, false, fmt.Errorf("NOT COMPARED WITH THE TRUNK: %s is not set, so the trunk's copy of %s is not beside this run; the checker places the change's own repository there (issue 1295)", BesideEnv, rel)
+	}
+	dir := filepath.Join(beside, Repository)
+	if _, err := os.Stat(dir); errors.Is(err, os.ErrNotExist) {
+		return nil, false, fmt.Errorf("NOT COMPARED WITH THE TRUNK: %s is not beside this check in %s=%s, so %s is not judged against the trunk's copy; the checker places the change's own repository there at its trunk (issue 1295)", Repository, BesideEnv, beside, rel)
+	} else if err != nil {
+		return nil, false, err
+	}
+	raw, err := os.ReadFile(filepath.Join(dir, rel))
+	if errors.Is(err, os.ErrNotExist) {
+		return nil, false, nil
+	}
+	if err != nil {
+		return nil, false, err
+	}
+	return raw, true, nil
+}

checks/trunk/trunk_test.go

@@ -0,0 +1,43 @@
+package trunk
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestTheCloneBesideTheCheckIsTheTrunk(t *testing.T) {
+	beside := t.TempDir()
+	dir := filepath.Join(beside, Repository, "checks", "x")
+	if err := os.MkdirAll(dir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(dir, "known"), []byte("a\nb\n"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	t.Setenv(BesideEnv, beside)
+	raw, found, err := Read("checks/x/known")
+	if err != nil || !found || string(raw) != "a\nb\n" {
+		t.Fatalf("read %q found %v err %v", raw, found, err)
+	}
+	if _, found, err := Read("checks/x/absent"); err != nil || found {
+		t.Fatalf("a file the trunk does not hold: found %v err %v; wanted its first copy", found, err)
+	}
+}
+
+func TestWithNothingBesideTheComparisonFailsAndSaysNotMade(t *testing.T) {
+	t.Setenv(BesideEnv, "")
+	_, found, err := Read("checks/x/known")
+	if found || err == nil || !strings.Contains(err.Error(), "NOT COMPARED") {
+		t.Fatalf("found %v, err %v; wanted a failure saying NOT COMPARED", found, err)
+	}
+}
+
+func TestACloneBesideWithoutTheCatalogueFailsAndSaysNotMade(t *testing.T) {
+	t.Setenv(BesideEnv, t.TempDir()) // the siblings are there, the catalogue's own base is not
+	_, found, err := Read("checks/x/known")
+	if found || err == nil || !strings.Contains(err.Error(), "NOT COMPARED") || !strings.Contains(err.Error(), "not beside") {
+		t.Fatalf("found %v, err %v; wanted a failure naming the missing copy", found, err)
+	}
+}

checks/words/buildagent-allowed

@@ -0,0 +1,3 @@
+# The modules of the catalogue whose texts still name the build agent or the toolchain images, and why (checks/words,
+# buildagent_test.go). One module directory a line, with its reason after a #. It only shrinks.
+modules/mesh-build-go  # build.go:45 says "the build agent's recipe" in a step's description: the asks lane's module (issue 1887), not E6's to edit

checks/words/buildagent_test.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"os"
+	"strings"
+	"testing"
+)
+
+// The build agent and the toolchain images are gone (novox/hq ADR 0524 §5, issue 1295 and E6 of milestone R4g): no text a module
+// can show names them. Where the word stands for a reason that is another lane's or still waits for its change, buildagent-allowed
+// names the module's directory with that reason and the date it is dated from; the list only shrinks: a directory on it that no
+// longer names the word is refused, so the line is taken out.
+var gone = []string{"build-agent", "build agent", "toolchain image"}
+
+func allowedModules(t *testing.T) map[string]string {
+	t.Helper()
+	raw, err := os.ReadFile("buildagent-allowed")
+	if err != nil {
+		t.Fatal(err)
+	}
+	out := map[string]string{}
+	for _, line := range strings.Split(string(raw), "\n") {
+		entry, why, _ := strings.Cut(line, "#")
+		if entry = strings.TrimSpace(entry); entry != "" && !strings.HasPrefix(line, "#") {
+			if strings.TrimSpace(why) == "" {
+				t.Fatalf("%q is allowed without a reason", entry)
+			}
+			out[entry] = strings.TrimSpace(why)
+		}
+	}
+	return out
+}
+
+func TestNoTextOfTheCatalogueNamesTheBuildAgentOutsideTheModulesAllowed(t *testing.T) {
+	texts, _, err := collect("../..")
+	if err != nil {
+		t.Fatal(err)
+	}
+	allowed := allowedModules(t)
+	seen := map[string]bool{}
+	for _, f := range check(gone, texts) {
+		module := f
+		if rest, ok := strings.CutPrefix(f, "modules/"); ok {
+			module = "modules/" + strings.SplitN(rest, "/", 2)[0]
+		}
+		if _, ok := allowed[module]; ok {
+			seen[module] = true
+			continue
+		}
+		t.Errorf("%s (the build agent and the toolchain images are gone: say what stands in their place)", f)
+	}
+	for module, why := range allowed {
+		if !seen[module] {
+			t.Errorf("buildagent-allowed names %s (%s), which names the word no more: take the line out, so it cannot come back", module, why)
+		}
+	}
+}

checks/words/lines.go

@@ -58,6 +58,9 @@ func checkLines(lines []retiredLine, texts []text) []string {
 	for _, l := range lines {
 		rx := linePattern(l)
 		for _, t := range texts {
+			if !strings.Contains(t.s, l.daemon) { // the pattern holds the daemon's name whole: the cheap test first
+				continue
+			}
 			if m := rx.FindStringSubmatchIndex(t.s); m != nil {
 				line := t.line
 				if line > 0 {

checks/words/main.go

@@ -43,18 +43,63 @@ func main() {
 	if len(os.Args) > 1 {
 		root = os.Args[1]
 	}
+	os.Exit(run(root))
+}
+
+// run reads every text a module can show under root and answers the command's exit code: 0 clean, 1 a finding, 2 a list or a
+// file unreadable. The command prints what it found; a test of the real catalogue reads the code.
+func run(root string) int {
 	words, err := readList(filepath.Join(root, "retired-words"))
 	if err != nil {
 		fmt.Fprintln(os.Stderr, "words:", err)
-		os.Exit(2)
+		return 2
 	}
 	if len(words) == 0 {
 		fmt.Fprintln(os.Stderr, "words: retired-words lists no word — the check would pass on anything")
-		os.Exit(2)
+		return 2
 	}
+	texts, files, err := collect(root)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "words:", err)
+		return 2
+	}
+	findings := check(words, texts)
+	for _, f := range findings {
+		fmt.Println(f)
+	}
+	if len(findings) > 0 {
+		fmt.Printf("words: %d use(s) of a word the glossary retired (novox/hq ADR 0244) — say it in the glossary's word\n", len(findings))
+		return 1
+	}
+	// And no daemon's line (novox/hq ADR 0272): what a module tells the operator to type is a `nox` line.
+	lines, err := readLines(filepath.Join(root, "retired-lines"))
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "words:", err)
+		return 2
+	}
+	if len(lines) == 0 {
+		fmt.Fprintln(os.Stderr, "words: retired-lines lists no line — the check would pass on anything")
+		return 2
+	}
+	if findings := checkLines(lines, texts); len(findings) > 0 {
+		for _, f := range findings {
+			fmt.Println(f)
+		}
+		fmt.Printf("words: %d daemon's line(s) in what a module shows — the operator types one command, nox (novox/hq ADR 0272)\n",
+			len(findings))
+		return 1
+	}
+	fmt.Printf("words: %d retired words and %d daemons' lines, none in the %d strings of %d files\n", len(words), len(lines),
+		len(texts), files)
+	return 0
+}
+
+// collect reads every text a module can show under root: the strings of its own code that is not a test, and every string of
+// its manifests.
+func collect(root string) ([]text, int, error) {
 	var texts []text
 	files := 0
-	err = filepath.WalkDir(filepath.Join(root, "modules"), func(path string, d fs.DirEntry, err error) error {
+	err := filepath.WalkDir(filepath.Join(root, "modules"), func(path string, d fs.DirEntry, err error) error {
 		if err != nil {
 			return err
 		}
@@ -87,38 +132,7 @@ func main() {
 		texts = append(texts, found...)
 		return nil
 	})
-	if err != nil {
-		fmt.Fprintln(os.Stderr, "words:", err)
-		os.Exit(2)
-	}
-	findings := check(words, texts)
-	for _, f := range findings {
-		fmt.Println(f)
-	}
-	if len(findings) > 0 {
-		fmt.Printf("words: %d use(s) of a word the glossary retired (novox/hq ADR 0244) — say it in the glossary's word\n", len(findings))
-		os.Exit(1)
-	}
-	// And no daemon's line (novox/hq ADR 0272): what a module tells the operator to type is a `nox` line.
-	lines, err := readLines(filepath.Join(root, "retired-lines"))
-	if err != nil {
-		fmt.Fprintln(os.Stderr, "words:", err)
-		os.Exit(2)
-	}
-	if len(lines) == 0 {
-		fmt.Fprintln(os.Stderr, "words: retired-lines lists no line — the check would pass on anything")
-		os.Exit(2)
-	}
-	if findings := checkLines(lines, texts); len(findings) > 0 {
-		for _, f := range findings {
-			fmt.Println(f)
-		}
-		fmt.Printf("words: %d daemon's line(s) in what a module shows — the operator types one command, nox (novox/hq ADR 0272)\n",
-			len(findings))
-		os.Exit(1)
-	}
-	fmt.Printf("words: %d retired words and %d daemons' lines, none in the %d strings of %d files\n", len(words), len(lines),
-		len(texts), files)
+	return texts, files, err
 }
 
 // readList reads retired-words: one word or phrase a line; blank lines and lines starting with # are not words.
@@ -152,9 +166,22 @@ func pattern(word string) *regexp.Regexp {
 
 func check(words []string, texts []text) []string {
 	var out []string
+	// A text can hold a word only if it holds the word's first part, in any case: the regular expression is run on those alone,
+	// which keeps the check of the whole catalogue within the unit level's bound.
+	lower := make([]string, len(texts))
+	for i, t := range texts {
+		lower[i] = strings.ToLower(t.s)
+	}
 	for _, w := range words {
 		rx := pattern(w)
-		for _, t := range texts {
+		first := ""
+		if parts := strings.Fields(w); len(parts) > 0 {
+			first = strings.ToLower(parts[0])
+		}
+		for i, t := range texts {
+			if !strings.Contains(lower[i], first) {
+				continue
+			}
 			if m := rx.FindStringSubmatchIndex(t.s); m != nil {
 				line := t.line
 				if line > 0 {
@@ -179,6 +206,9 @@ func excerpt(s string, from, to int) string {
 	return strings.Join(strings.Fields(s[a:b]), " ")
 }
 
+// modulePath matches a string that is only a module or import path ("git.example.org/org/repo/go/pkg").
+var modulePath = regexp.MustCompile(`^[a-z0-9.-]+\.[a-z]+/[A-Za-z0-9_./-]+$`)
+
 // goStrings returns a Go file's string literals, adjacent ones joined across `+` as the program joins them.
 func goStrings(path, rel string) ([]text, error) {
 	src, err := os.ReadFile(path)
@@ -204,6 +234,11 @@ func goStrings(path, rel string) ([]text, error) {
 			if err != nil {
 				v = lit
 			}
+			if modulePath.MatchString(v) {
+				// An import path or another module path names code, not words an agent reads.
+				cur, joining = nil, false
+				continue
+			}
 			if cur != nil && joining {
 				cur.s += v
 			} else {

checks/words/main_test.go

@@ -87,3 +87,11 @@ func TestRetiredLinesAreReadAsDaemonAndCommand(t *testing.T) {
 		t.Fatal("a line with no command was read")
 	}
 }
+
+// The script's run of this check over the real tree (novox/hq ADR 0529 clause 2): no word the glossary retired, and no
+// daemon's line, in any text a module's tools can show an agent.
+func TestTheCatalogueHoldsNoRetiredWordAndNoDaemonsLine(t *testing.T) {
+	if code := run("../.."); code != 0 {
+		t.Fatalf("the check of the real catalogue exits %d (see what it printed above)", code)
+	}
+}

checks/words/reads-outside

@@ -0,0 +1,7 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# run("../.."): the root's lists of retired words and lines, and every module's texts.
+retired-words
+retired-lines
+modules

health-undeclared

@@ -1,5 +1,5 @@
 58
 The long-running resources of this catalogue that do not say how they are ready (`health`, novox/hq ADR 0240
-rule 8), as `module check` counts them. It may only go down: merge-check.sh fails a change that raises it, and
+rule 8), as `module check` counts them. It may only go down: checks/health fails a change that raises it, and
 one that lowers it writes the new number on the first line. From 2026-11-18, or once it is 0, a long-running
 resource without `health` is refused.

merge-check-typescript.sh

@@ -1,140 +0,0 @@
-#!/bin/sh
-# The catalogue's TypeScript part of its own check (novox/hq issue 302's `mesh-check-also`), declared in
-# merge-check.sh's header and run by the build seat in the TypeScript toolchain, after the Go part. The media
-# catalogue's twin is issue 311. Before this, a TypeScript module's change ran nothing of its own before it
-# merged: the Go part said "NOT TESTED HERE", and a type error in the forge module would first have shown in
-# its walk.
-#
-# For every touched module that has a package.json, in a copy of it outside the clone:
-#
-#   1. its dependencies are the toolchain's own (/app/node_modules: the mesh's SDK, Node's types and what the
-#      runtime carries), copied beside it, never fetched: the check holds no credential for the package
-#      registry. A module that depends on a package the toolchain does not hold **fails the check**, by name:
-#      it could not be type-checked or tested, and what could not run is a failure, never a note (novox/hq
-#      issue 385);
-#   2. every source that is not a test is type-checked with the toolchain's compiler and the flags a build
-#      compiles with — the same check the build makes, before the merge rather than in the walk;
-#   3. its tests (test/*.test.ts) run under Node's own runner with types stripped, as its own `npm test` does
-#      after its build: the sources are compiled to dist/ and beside themselves first, so a test that imports
-#      the compiled module, or a source that imports its sibling by its .js name, finds it.
-#
-# Said, never passed silently: a module with no tests is said NOT TESTED on every run that touches it —
-# nothing of it could fail. A module whose tests exist and could not run fails (novox/hq issue 385).
-#
-# By hand: MESH_CHECK_MODULES=gitea sh merge-check-typescript.sh, in the toolchain image (it reads
-# /app/node_modules), or with TOOLCHAIN_MODULES pointing at a node_modules that holds the same.
-#
-# **In an agent's session, outside the toolchain image** (novox/hq issue 742), the same node_modules is
-# assembled first, in a throwaway directory under the check's own workspace, the way the image's `deps` stage
-# assembles it: the toolchain's own package.json and lock (mesh-tools' node-tools/, read from the forge this
-# clone came from, so the list is never copied here) installed with `npm ci`, then the SDK the mesh last
-# published (`@novox/mesh-sdk@latest`), the @novox scope from the forge's package registry, read without a
-# credential. Node and npm are the dev-tools module's; nothing is installed on the machine, no npm
-# configuration or cache of the account's is read or written. Only when neither TOOLCHAIN_MODULES nor
-# /app/node_modules is there: the forge's check, in the image, fetches nothing, as before. The forge is
-# MESH_FORGE (default: the origin remote's), the owner MESH_FORGE_OWNER (default: the origin's owner).
-set -eu
-
-work=$(mktemp -d)
-trap 'rm -rf "$work"' EXIT
-
-deps="${TOOLCHAIN_MODULES:-/app/node_modules}"
-if [ -z "${TOOLCHAIN_MODULES:-}" ] && [ ! -f "$deps/typescript/bin/tsc" ]; then
-	origin=$(git remote get-url origin 2>/dev/null || true)
-	forge="${MESH_FORGE:-$(printf '%s\n' "$origin" | sed -n 's#^\(https\{0,1\}://[^/]*\)/.*#\1#p')}"
-	owner="${MESH_FORGE_OWNER:-$(printf '%s\n' "$origin" | sed -n 's#^https\{0,1\}://[^/]*/\([^/]*\)/.*#\1#p')}"
-	if [ -z "$forge" ] || [ -z "$owner" ]; then
-		echo "NOT CHECKED: no TypeScript toolchain at $deps, and no forge to assemble one from (origin is '$origin'; set MESH_FORGE and MESH_FORGE_OWNER, or TOOLCHAIN_MODULES)"
-		exit 1
-	fi
-	echo "no TypeScript toolchain at $deps: assembling one from $forge/$owner/mesh-tools node-tools/ and $owner's package registry (novox/hq issue 742)"
-	tc="$work/toolchain"
-	mkdir -p "$tc"
-	printf '@%s:registry=%s/api/packages/%s/npm/\n' "$owner" "$forge" "$owner" >"$work/npmrc"
-	# Read with Node's own fetch (dev-tools declares Node, not curl); a status that is not 2xx fails.
-	if ! { node -e '
-		const [base, dir] = process.argv.slice(1);
-		Promise.all(["package.json", "package-lock.json"].map(async (f) => {
-			const r = await fetch(base + f);
-			if (!r.ok) throw new Error(base + f + ": " + r.status);
-			require("fs").writeFileSync(dir + "/" + f, await r.text());
-		})).catch((e) => { console.error(e.message); process.exit(1); });' \
-		"$forge/$owner/mesh-tools/raw/branch/main/node-tools/" "$tc" &&
-		(cd "$tc" && export npm_config_userconfig="$work/npmrc" npm_config_cache="$work/npm-cache" &&
-			npm ci --ignore-scripts --no-audit --no-fund --loglevel=error &&
-			npm install --ignore-scripts --no-audit --no-fund --no-save --loglevel=error "@$owner/mesh-sdk@latest"); }; then
-		echo "NOT CHECKED: the TypeScript toolchain could not be assembled from $forge (novox/hq issue 742)"
-		exit 1
-	fi
-	deps="$tc/node_modules"
-fi
-tsc="$deps/typescript/bin/tsc"
-if [ ! -f "$tsc" ]; then
-	echo "NOT CHECKED: no TypeScript compiler at $tsc — this part runs in the TypeScript toolchain"
-	exit 1
-fi
-
-# The modules the change reaches: the planner's answer (hq ADR 0238), and every module a changed file is in —
-# a change to a module's tests alone moves no build (hq ADR 0267), and its tests must still run.
-touched=$({
-	printf '%s\n' "${MESH_CHECK_MODULES:-}" | tr ',' '\n' | sed -e 's#^modules/##' -e '/\//d'
-	printf '%s\n' "${MESH_CHECK_CHANGED:-}" | tr ',' '\n' | sed -n 's#^modules/\([^/]*\)/.*#\1#p'
-} | sed '/^$/d' | sort -u)
-
-failed=""
-for m in $touched; do
-	d="modules/$m"
-	[ -f "$d/package.json" ] || continue
-	copy="$work/$m"
-	mkdir -p "$copy"
-	(cd "$d" && tar --exclude=./node_modules --exclude=./dist -cf - .) | (cd "$copy" && tar -xf -)
-	# What it depends on, against what the toolchain holds.
-	missing=$(node -e '
-		const p = require(process.argv[1]); const have = require("fs").readdirSync(process.argv[2]);
-		const scoped = (n) => n.startsWith("@") ? n.split("/")[0] : n;
-		const names = Object.keys({ ...(p.dependencies || {}), ...(p.devDependencies || {}) });
-		const held = (n) => have.includes(n) || (n.startsWith("@") && have.includes(scoped(n)) &&
-			require("fs").existsSync(process.argv[2] + "/" + n));
-		console.log(names.filter((n) => n !== "typescript" && !held(n)).join(" "));' "$copy/package.json" "$deps")
-	if [ -n "$missing" ]; then
-		echo "FAILED: $d could not be checked — it depends on $missing, which the toolchain does not hold and the check cannot fetch (novox/hq issue 385)"
-		failed="$failed $m"
-		continue
-	fi
-	mkdir -p "$copy/node_modules"
-	for p in "$deps"/*; do
-		case "$(basename "$p")" in typescript | esbuild | @esbuild) continue ;; esac
-		cp -r "$p" "$copy/node_modules/"
-	done
-	sources=$(cd "$copy" && find . -name '*.ts' ! -name '*.d.ts' ! -path './test/*' ! -path './node_modules/*' ! -path './dist/*' | sort)
-	if [ -n "$sources" ]; then
-		echo "type-checking $d (TypeScript)"
-		# shellcheck disable=SC2086 # the module's sources, none with a space in its name
-		if ! (cd "$copy" && node "$tsc" --noEmit --module NodeNext --moduleResolution NodeNext --target ES2022 \
-			--types node $sources); then
-			failed="$failed $m"
-			continue
-		fi
-	else
-		echo "$d has no TypeScript sources of its own to type-check: its tests read its files"
-	fi
-	if ! ls "$copy"/test/*.test.ts >/dev/null 2>&1; then
-		echo "NOT TESTED: $d is TypeScript and has no tests of its own"
-		continue
-	fi
-	if [ -n "$sources" ]; then
-		# shellcheck disable=SC2086
-		(cd "$copy" && node "$tsc" --module NodeNext --moduleResolution NodeNext --target ES2022 --types node \
-			--rootDir . --outDir dist $sources && node "$tsc" --module NodeNext --moduleResolution NodeNext \
-			--target ES2022 --types node --rootDir . --outDir . $sources)
-	fi
-	echo "testing $d (TypeScript)"
-	if ! (cd "$copy" && node --test --test-reporter=spec --experimental-strip-types \
-		--no-warnings=ExperimentalWarning test/*.test.ts); then
-		failed="$failed $m"
-	fi
-done
-if [ -n "$failed" ]; then
-	echo "TypeScript modules that failed:$failed"
-	exit 1
-fi

merge-check.sh

@@ -1,219 +0,0 @@
-#!/bin/sh
-# mesh-check-toolchain: go
-# mesh-check-also: typescript merge-check-typescript.sh
-#
-# The catalogue's own check (novox/hq ADR 0237 as amended): the second layer of a pull request's merge
-# check, `mesh/repo-check`, run by the build seat in the mesh's Go toolchain.
-#
-# The gate — the manifests the change touches through the running controller's module check, every machine
-# of the facts snapshot composed with them and validated by the node-engine's own validator, the replays
-# against this tree — is the build seat's first layer (`mesh/merge-gate`), run because the mesh's module
-# graph builds these modules from here. It is not repeated here. This is the repository's own:
-#
-#   1. every manifest through the controller's module check, so one module's change cannot leave another
-#      it shares a rule with refused (MESH_GATE is the controller the mesh runs) — and the count of
-#      long-running resources without `health` held to the number in health-undeclared, which only goes down;
-#   2. the Go tests of every module the change touches that has them, under the race detector when the
-#      toolchain has a C compiler. A requirement of the mesh's own forge the module cache does not hold (a
-#      pinned SDK commit) is taken from its repository's clone beside the check (checks/deps); a module whose
-#      dependencies still cannot be had **fails the check**, by name and why — its tests could not run, and a
-#      test that could not run is a failure, never a note (novox/hq issue 385). The integration tests (`//go:build
-#      integration`) run here, with -tags integration, and only here. A module written in
-#      TypeScript is type-checked and tested by
-#      merge-check-typescript.sh, declared above, in the TypeScript toolchain (novox/hq issues 302, 311);
-#   3. the words (novox/hq ADR 0244): no word the glossary retired for the tools, as copied in
-#      retired-words, in any text a module's tools can show an agent — every string in its own code that is
-#      not a test, and every description in its manifest. Run over every module, not only the touched ones,
-#      so a word newly retired is found everywhere it stands. The check's own test runs first.
-#   4. the paths (novox/hq ADR 0260): no module names a path under /run, /var/lib, /usr/local/lib or /etc
-#      that another module's manifest places — modules talk over the bus, not through each other's files.
-#      Over every module; checks/paths/shared and checks/paths/known narrow it, and known only shrinks.
-#   5. the agent's home (novox/hq ADR 0266): no module unpacks an archive, or writes into a file, under
-#      ${machine:agent-home} — the node-engine does both after checking the path, and the agent account owns
-#      that home and could swap a link in between.
-#   6. the secrets (novox/hq issue 342): no mergeable file fills a key with a vault secret that a setting could
-#      replace — the key is `protected`, or left out of the file's `takes-settings`. checks/secrets/known names
-#      the nested ones the controller cannot protect alone yet, and only shrinks.
-#   7. the list of predefined keys (novox/hq ADR 0348 clause 7): a change to predefined.json removes no key a
-#      module still names, judged against the trunk's copy at the merge base. Whether a removed key still holds a
-#      value at the mesh or a node is mesh-config's to refuse; this check reads no store. The list itself and
-#      every manifest against it are judged by the controller's module check in step 1.
-#   8. the config form (novox/hq ADR 0348 clauses 1 and 11): no module says `settings`, `takes-settings` or
-#      `${setting:<key>}`, in its manifest or a template it names, or has a mergeable file naming no keys (which
-#      takes its whole layer), unless checks/config/unmoved lists it as not yet moved; that list only shrinks,
-#      judged against the trunk's copy at the merge base.
-#   9. the file text (novox/hq ADR 0349 §2): no module keeps a file's text inline in its manifest (`content`)
-#      unless checks/templates/inline lists it as not yet moved; each names its template in files/. That list
-#      only shrinks, judged against the trunk's copy at the merge base.
-#   10. the mail-store seat (novox/hq ADR 0378 §3, issue 800): no manifest but modules/mesh-mail claims it.
-#   11. owned paths (novox/hq ADR 0422 §8, issue 1024; it holds ~/.ssh for ssh-client as ADR 0415 §6 asked):
-#      every directory and archive says `unknown` (move-out, module or program) and a valid `knows`; `move-out`
-#      only under a home; and no module declares a path inside a directory of another module.
-#      checks/sshdir (ADR 0415 §6) stays while main runs it; it goes under issue 1035 once main runs checks/owned.
-#   12. the image builder (novox/hq ADR 0487 §3, issue 1704): only modules/buildah provides rootless-image-build.
-#   13. the image's place (novox/hq ADR 0487 §1, issue 1707): every image builds from a Dockerfile in its own module's directory.
-set -eu
-
-(cd checks/words && go test -count=1 . && go run . ../..)
-# Node names (novox/hq ADR 0507 §9, issue 1838): no node name of this mesh in a covered module; the names are in
-# `particulars`, the covered modules in checks/particulars/covered.
-(cd checks/particulars && go test -count=1 . && go run . ../..)
-# The toolchains (novox/hq ADR 0477 clause 4): the package go only in modules/go, nodejs and npm only in modules/nodejs.
-(cd checks/toolchains && go test -count=1 . && go run . ../..)
-# The image builder (novox/hq ADR 0487 §3): only modules/buildah provides rootless-image-build, docker never.
-(cd checks/imagebuild && go test -count=1 . && go run . ../..)
-# The image's place (novox/hq ADR 0487 §1): every image builds from a Dockerfile in its own module's directory.
-(cd checks/imageplace && go test -count=1 . && go run . ../..)
-# The agent's home (novox/hq ADR 0266): no archive, and no file written into, under it.
-(cd checks/agenthome && go test -count=1 . && go run . ../..)
-# The mail-store seat (novox/hq ADR 0378 §3): only mesh-mail may claim it.
-(cd checks/mailstore && go test -count=1 . && go run . ../..)
-# ~/.ssh (novox/hq ADR 0415 §6): only ssh-client may name a path under it. Main's merge check runs this line, so
-# checks/sshdir stays until main runs checks/owned; it goes under issue 1035.
-(cd checks/sshdir && go test -count=1 . && go run . ../..)
-# Owned paths (novox/hq ADR 0422 §8): unknown files named per directory; no path inside another module's directory.
-(cd checks/owned && go test -count=1 . && go run . ../..)
-# The secrets (novox/hq issue 342): a password is not a setting, so no setting can replace the vault's. The
-# known list only shrinks: judged against the trunk's copy at the merge base, a line it does not hold is refused.
-secrets_base=""
-secrets_ref="origin/${MESH_CHECK_BASE:-main}"
-if merge_base=$(git merge-base HEAD "$secrets_ref" 2>/dev/null); then
-	if git cat-file -e "$merge_base:checks/secrets/known" 2>/dev/null; then
-		secrets_base=$(mktemp)
-		git show "$merge_base:checks/secrets/known" >"$secrets_base"
-	fi
-else
-	echo "NOT COMPARED WITH THE TRUNK: no merge base with $secrets_ref; checks/secrets/known is held to the list it was first written with"
-fi
-(cd checks/secrets && go test -count=1 . && if [ -n "$secrets_base" ]; then go run . -base "$secrets_base" ../..; else go run . ../..; fi)
-# The list of predefined keys (novox/hq ADR 0348 clause 7): no key removed that a module still names. The trunk's
-# list at the merge base is what it is judged against; a trunk without the file had none.
-predefined_base=""
-if merge_base=$(git merge-base HEAD "origin/${MESH_CHECK_BASE:-main}" 2>/dev/null); then
-	predefined_base=$(mktemp)
-	if ! git show "$merge_base:predefined.json" >"$predefined_base" 2>/dev/null; then
-		echo '{}' >"$predefined_base"
-	fi
-else
-	echo "NOT COMPARED WITH THE TRUNK: no merge base with origin/${MESH_CHECK_BASE:-main}; no removal from predefined.json can be seen"
-fi
-(cd checks/predefined && go test -count=1 . && if [ -n "$predefined_base" ]; then go run . -base "$predefined_base" ../..; else go run . ../..; fi)
-# The config form (novox/hq ADR 0348 §1, §11): a moved module says no old name, and the list of modules not yet moved
-# only shrinks, judged against the trunk's copy at the merge base; a trunk without one is the list's first copy.
-unmoved_base=""
-if merge_base=$(git merge-base HEAD "origin/${MESH_CHECK_BASE:-main}" 2>/dev/null); then
-	if git cat-file -e "$merge_base:checks/config/unmoved" 2>/dev/null; then
-		unmoved_base=$(mktemp)
-		git show "$merge_base:checks/config/unmoved" >"$unmoved_base"
-	fi
-else
-	echo "NOT COMPARED WITH THE TRUNK: no merge base with origin/${MESH_CHECK_BASE:-main}; checks/config/unmoved is held to the list it was first written with"
-fi
-(cd checks/config && go test -count=1 . && if [ -n "$unmoved_base" ]; then go run . -base "$unmoved_base" ../..; else go run . ../..; fi)
-# The file text (novox/hq ADR 0349 §2): a file's text is a template in files/, outside the modules not yet moved; the
-# list of those only shrinks, judged against the trunk's copy at the merge base, a trunk without one being its first.
-inline_base=""
-if merge_base=$(git merge-base HEAD "origin/${MESH_CHECK_BASE:-main}" 2>/dev/null); then
-	if git cat-file -e "$merge_base:checks/templates/inline" 2>/dev/null; then
-		inline_base=$(mktemp)
-		git show "$merge_base:checks/templates/inline" >"$inline_base"
-	fi
-else
-	echo "NOT COMPARED WITH THE TRUNK: no merge base with origin/${MESH_CHECK_BASE:-main}; checks/templates/inline is held to the list it was first written with"
-fi
-(cd checks/templates && go test -count=1 . && if [ -n "$inline_base" ]; then go run . -base "$inline_base" ../..; else go run . ../..; fi)
-# The lists that narrow the paths check may not grow unseen: the base branch's copies are what they are
-# judged against (MESH_CHECK_BASE, main when unset), read from the clone the check runs in.
-base_lists=""
-base_ref="origin/${MESH_CHECK_BASE:-main}"
-if git rev-parse --verify --quiet "$base_ref^{commit}" >/dev/null 2>&1 &&
-	git cat-file -e "$base_ref:checks/paths/known" 2>/dev/null && git cat-file -e "$base_ref:checks/paths/shared" 2>/dev/null; then
-	base_lists=$(mktemp -d)
-	git show "$base_ref:checks/paths/known" >"$base_lists/known"
-	git show "$base_ref:checks/paths/shared" >"$base_lists/shared"
-fi
-(cd checks/paths && go test -count=1 . && if [ -n "$base_lists" ]; then go run . -base "$base_lists" ../..; else go run . ../..; fi)
-
-if [ -n "${MESH_GATE:-}" ]; then
-	checked=$("$MESH_GATE" module check modules/*/module.json) || { printf '%s\n' "$checked"; exit 1; }
-	# **The count only goes down** (novox/hq ADR 0240 rule 8): the long-running resources that do not say how
-	# they are ready, as the controller counts them, against the number kept in health-undeclared. A change
-	# that raises it fails; one that lowers it writes the new number there, so it can never rise again.
-	kept=$(sed -n 's/^\([0-9][0-9]*\).*/\1/p' health-undeclared | head -n 1)
-	counted=$(printf '%s\n' "$checked" | sed -n 's/^long-running resources without health: \([0-9][0-9]*\)$/\1/p')
-	if [ -z "$counted" ]; then
-		echo "NOT COUNTED: the controller the mesh runs is older than the count of resources without health (ADR 0240 Phase B)"
-	elif [ "$counted" -gt "$kept" ]; then
-		echo "the long-running resources without health rose from $kept to $counted: declare how each new one is ready (ADR 0240 rule 8)"
-		exit 1
-	elif [ "$counted" -lt "$kept" ]; then
-		echo "the long-running resources without health fell from $kept to $counted: write $counted in health-undeclared, so the count cannot rise again"
-		exit 1
-	else
-		echo "long-running resources without health: $counted, as kept"
-	fi
-else
-	echo "NOT CHECKED: no controller was built beside this check, so the manifests were not read by one"
-fi
-
-race=""
-if command -v gcc >/dev/null 2>&1; then race="-race"; else echo "NOT RACE-CHECKED: the toolchain holds no C compiler"; fi
-
-# The modules the change reaches are the controller's planner's answer (MESH_CHECK_MODULES, hq ADR 0238):
-# a module by its name, a new one by its directory. By hand, without it, the directories the changed files
-# are in.
-if [ -n "${MESH_CHECK_MODULES:-}" ]; then
-	touched=$(printf '%s\n' "$MESH_CHECK_MODULES" | tr ',' '\n' | sed -e 's#^modules/##' -e '/\//d' | sort -u)
-else
-	touched=$(printf '%s\n' "${MESH_CHECK_CHANGED:-}" | tr ',' '\n' | sed -n 's#^modules/\([^/]*\)/.*#\1#p' | sort -u)
-fi
-# A module's dependencies: fetched, or a forge requirement taken from its clone beside the check
-# (MESH_CHECK_BESIDE); its tests run against them (checks/deps, novox/hq issue 385). The helper's own test
-# runs first.
-(cd checks/deps && go test -count=1 .)
-deps=$(mktemp -d)
-trap 'rm -rf "$deps"' EXIT
-(cd checks/deps && go build -o "$deps/deps" .)
-untestable=""
-for m in $touched; do
-	[ -d "modules/$m" ] || continue
-	if [ ! -f "modules/$m/go.mod" ]; then
-		[ -f "modules/$m/package.json" ] && echo "modules/$m is TypeScript: merge-check-typescript.sh type-checks and tests it"
-		continue
-	fi
-	if ! modfile=$(GOPRIVATE=git.novox.be "$deps/deps" -beside "${MESH_CHECK_BESIDE:-}" -work "$deps" "modules/$m"); then
-		echo "FAILED: modules/$m could not be tested — $modfile"
-		untestable="$untestable modules/$m"
-		continue
-	fi
-	[ -n "$modfile" ] && echo "modules/$m takes its forge dependencies from the clones beside the check"
-	echo "testing modules/$m"
-	unformatted=$(cd "modules/$m" && gofmt -l .)
-	if [ -n "$unformatted" ]; then
-		echo "modules/$m is not gofmt'd: $unformatted"
-		exit 1
-	fi
-	cgo=0
-	[ -n "$race" ] && cgo=1
-	# The integration tests (a file whose first line is `//go:build integration`: a test that starts a bus, a store or
-	# another process) run here and nowhere else: the unit suite stays under a second (novox/hq playbook 07).
-	(cd "modules/$m" && CGO_ENABLED=$cgo GOPRIVATE=git.novox.be go vet -tags integration ${modfile:+"-modfile=$modfile"} ./... &&
-		CGO_ENABLED=$cgo GOPRIVATE=git.novox.be go test -tags integration ${modfile:+"-modfile=$modfile"} $race -count=1 ./...)
-	# The docker tests of the bus's snapshot program and entrypoint (novox/hq ADR 0480 clause 6) start throwaway nats
-	# containers, and the Go toolchain container holds no docker, so above they skip with a "NOT RUN" line. Where the
-	# build seat says docker exists (MESH_CHECK_DOCKER=1) they run here by name, and a missing docker fails the check
-	# (MESH_REQUIRE_DOCKER=1 makes the tests fail instead of skip). Without it the step says it did not run.
-	if [ "$m" = nats ]; then
-		if [ "${MESH_CHECK_DOCKER:-}" = 1 ]; then
-			(cd modules/nats && MESH_REQUIRE_DOCKER=1 CGO_ENABLED=$cgo GOPRIVATE=git.novox.be go test -tags integration ${modfile:+"-modfile=$modfile"} -count=1 \
-				-run 'TestTheDeclaredDumpRunsInTheBussImage|TestTheEntrypointReloadsTheServerWithoutDroppingAConnection|TestTheStoreSurvivesTheNewDeclarationTheOldAndTheNewAgain|TestASnapshotOfALiveBusRestoresToTheSameContent|TestTheSnapshotUserCannotChangeTheBus' \
-				./cmd/mesh-nats-snapshot) || { echo "the bus's docker tests failed"; exit 1; }
-		else
-			echo "NOT RUN: the bus's five docker tests (modules/nats/cmd/mesh-nats-snapshot) skipped: this check has no docker (MESH_CHECK_DOCKER is not 1)"
-		fi
-	fi
-done
-if [ -n "$untestable" ]; then
-	echo "the check fails: the tests of$untestable could not run (novox/hq issue 385)"
-	exit 1
-fi

modules/adwaita/internal/desktop/reads-outside

@@ -0,0 +1,9 @@
+# What these tests read outside their package, as paths from the repository's root (a glob, or a directory read whole;
+# ? before a path whose absence is read). mesh-build-go hashes them into the package's digest, so its verdict is kept
+# until one of them changes (issue 1936). An empty list, or a line matching nothing, keeps nothing.
+# the copies of this package in every module that carries one.
+modules/xorg/internal/desktop/*.go
+modules/lemurs/internal/desktop/*.go
+modules/i3/internal/desktop/*.go
+modules/xterm/internal/desktop/*.go
+modules/adwaita/internal/desktop/*.go

modules/artifact-store-tools/cmd/artifact-store-tools/definitions.go

@@ -23,7 +23,7 @@ import (
 // manifest's.
 const NamesFileEnv = "MESH_ARTIFACT_STORE_NAMES_FILE"
 
-// CatalogueModules and CatalogueModule are the catalogue's tools these definitions are read through.
+// CatalogueModules and CatalogueModule are the catalog's tools these definitions are read through.
 const (
 	CatalogueModules = "mesh-catalog.catalog_modules"
 	CatalogueModule  = "mesh-catalog.catalog_module"
@@ -143,21 +143,21 @@ func PinsIn(manifest json.RawMessage, names StoreNames) []pinned {
 	return out
 }
 
-// Definitions is what the catalogue's definitions pin in the store, and what of them could not be read.
+// Definitions is what the catalog's definitions pin in the store, and what of them could not be read.
 type Definitions struct {
 	// Pins are by Key(repository, digest).
 	Pins map[string][]Pin
 	// Read is how many definitions were read; Unread says, per module, why its definition was not.
 	Read   int
 	Unread map[string]string
-	// NotAsked says why the catalogue could not be asked at all, when it could not.
+	// NotAsked says why the catalog could not be asked at all, when it could not.
 	NotAsked string
 	// NamesNotRead says why the store's older names could not be read, when they could not.
 	NamesNotRead string
 	Names        StoreNames
 }
 
-// Catalogue reads the definitions through the catalogue's tools, and keeps each definition it read by its
+// Catalogue reads the definitions through the catalog's tools, and keeps each definition it read by its
 // module and commit, which never change together.
 type Catalogue struct {
 	Ask Asking
@@ -171,21 +171,21 @@ type catalogueEntry struct {
 	Commit string `json:"commit"`
 }
 
-// Read asks the catalogue for every module and reads each definition, bounded by DefinitionsTimeout.
+// Read asks the catalog for every module and reads each definition, bounded by DefinitionsTimeout.
 func (c *Catalogue) Read(ctx context.Context, names StoreNames) *Definitions {
 	defs := &Definitions{Pins: map[string][]Pin{}, Unread: map[string]string{}, Names: names}
 	if c == nil || c.Ask == nil {
-		defs.NotAsked = "this bundle has no way to ask the catalogue"
+		defs.NotAsked = "this bundle has no way to ask the catalog"
 		return defs
 	}
 	raw, err := c.Ask(CatalogueModules, map[string]any{})
 	if err != nil {
-		defs.NotAsked = "the catalogue's modules could not be asked: " + err.Error()
+		defs.NotAsked = "the catalog's modules could not be asked: " + err.Error()
 		return defs
 	}
 	answer, output, ok := answerOf(raw)
 	if !ok {
-		defs.NotAsked = "the catalogue refused its modules: " + lastLine(output)
+		defs.NotAsked = "the catalog refused its modules: " + lastLine(output)
 		return defs
 	}
 	var list struct {
@@ -193,7 +193,7 @@ func (c *Catalogue) Read(ctx context.Context, names StoreNames) *Definitions {
 		Error   string           `json:"error"`
 	}
 	if err := json.Unmarshal(answer, &list); err != nil || list.Error != "" || list.Modules == nil {
-		defs.NotAsked = "the catalogue's modules answer is not readable: " + firstOf(list.Error, errText(err), lastLine(output))
+		defs.NotAsked = "the catalog's modules answer is not readable: " + firstOf(list.Error, errText(err), lastLine(output))
 		return defs
 	}
 	c.mu.Lock()

modules/artifact-store-tools/cmd/artifact-store-tools/door.go

@@ -0,0 +1,129 @@
+package main
+
+// The artifact store's door and the bus, as the holder reaches them through this module's runtime.
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	stdio "git.novox.be/novox/mesh-sdk/go"
+
+	"artifactstoretools/internal/registry"
+)
+
+// door is registry.Store at the store's address as this machine reaches it.
+type door struct{ s registry.Store }
+
+func (d *door) Address() string                                  { return d.s.Address }
+func (d *door) Hold(ctx context.Context, r string) (bool, error) { return d.s.Hold(ctx, r) }
+func (d *door) Holds(ctx context.Context, r string) error        { return d.s.Holds(ctx, r) }
+func (d *door) IsIndex(ctx context.Context, r string) (bool, error) {
+	return d.s.IsIndex(ctx, r)
+}
+func (d *door) LetGo(ctx context.Context, r string) error { return d.s.LetGo(ctx, r) }
+func (d *door) SpareKept(ctx context.Context, keptImages, touching []string) error {
+	spare, err := d.s.SpareKeptIndexes(ctx, keptImages, touching)
+	if err == nil {
+		d.s.Spare = spare
+	}
+	return err
+}
+
+// DoorAt reads the store's address (host:port) from the file the manifest fills from the seat mesh-artifact-store's
+// reach, each time, so a store that moved is reached where it is now.
+func DoorAt(file string) func() (Door, error) {
+	return func() (Door, error) {
+		if file == "" {
+			return nil, fmt.Errorf("this bundle was given no file naming the artifact store's address")
+		}
+		raw, err := os.ReadFile(file)
+		if err != nil {
+			return nil, fmt.Errorf("the artifact store's address: %w", err)
+		}
+		address := strings.TrimSpace(string(raw))
+		if address == "" {
+			return nil, fmt.Errorf("the artifact store's address is empty in %s", file)
+		}
+		return &door{s: registry.Store{Address: address}}, nil
+	}
+}
+
+// runtimeBus is the holder's bus through the runtime: its reads, its findings and its seat's event.
+type runtimeBus struct{}
+
+func (runtimeBus) Keys(state string) ([]string, error) { return stdio.State(state).Keys() }
+func (runtimeBus) Get(state, key string) ([]byte, bool, error) {
+	e, err := stdio.State(state).Get(key)
+	if err != nil || e == nil {
+		return nil, false, err
+	}
+	return e.Value, true, nil
+}
+func (runtimeBus) History(state, key string) ([]stdio.StateRevision, error) {
+	return stdio.State(state).History(key)
+}
+func (runtimeBus) LogSince(read string, at time.Time) ([]stdio.LogEntry, error) {
+	var out []stdio.LogEntry
+	page, err := stdio.Log(read).Since(at, "", 0)
+	for err == nil {
+		out = append(out, page.Entries...)
+		if page.Next == 0 {
+			return out, nil
+		}
+		page, err = stdio.Log(read).Read(page.Next, "", 0)
+	}
+	return nil, err
+}
+
+func (runtimeBus) Put(state, key string, value any) error {
+	_, err := stdio.State(state).Put(key, value)
+	return err
+}
+func (runtimeBus) Delete(state, key string) error { return stdio.State(state).Delete(key) }
+func (runtimeBus) Publish(subject string, body any) error {
+	return stdio.SeatPublish(subject, body, "")
+}
+
+// follow watches the builder's done keys and the wants: a build's end sweeps (once the lease names no controller) and
+// observes again; a want changed observes again. Event-driven: nothing reads them on a timer.
+func follow(h *Holder) {
+	<-stdio.Served()
+	watch := func(state string, handle func(stdio.StateChange) error) {
+		for {
+			if err := stdio.State(state).Watch("", handle); err == nil {
+				return
+			} else {
+				h.logf("watching %s: %v; asked again in 10s", state, err)
+			}
+			time.Sleep(10 * time.Second)
+		}
+	}
+	observe := func() {
+		if err := h.Observe(context.Background()); err != nil {
+			h.logf("image-missing could not be observed: %v", err)
+		}
+	}
+	watch(BuildsRead, func(c stdio.StateChange) error {
+		if c.Current || c.Op != stdio.OpPut {
+			return nil
+		}
+		var b struct {
+			State string `json:"state"`
+		}
+		if json.Unmarshal(c.Value, &b) == nil && b.State == "done" {
+			go func() { h.AfterBuild(c.Key); observe() }()
+		}
+		return nil
+	})
+	watch(WantsRead, func(c stdio.StateChange) error {
+		if !c.Current {
+			go observe()
+		}
+		return nil
+	})
+	observe()
+}