C1c, C6: any holder serves drop and every node follows it by a watch of the shared pauses; the build modules serve drop and ask the tool runner's seat-settle-delay (ADR 0664 §1, §4, §5, issue 1748)

Claude-Session: https://claude.ai/code/session_01JG73KEq4zoDfM9WtYpcQgZ

modules/mesh-build-node/cmd/mesh-build-node/asks.go

@@ -72,7 +72,7 @@ func (m *Module) Puller(steps []StepTool, source buildstep.AskSource) *buildstep
 	if m.ReadPauses.Get != nil {
 		load = func(key string) ([]byte, error) { return m.ReadPauses.Get(key) }
 	}
-	return &buildstep.Puller{Source: source, Language: sdkstep.AskNode, Node: m.Node, Put: m.Steps, PausePut: m.Pauses, Load: load, ForgetPause: m.ForgetPause, PauseKeys: m.ReadPauses.Keys,
+	return &buildstep.Puller{Source: source, Language: sdkstep.AskNode, Node: m.Node, Put: m.Steps, PausePut: m.Pauses, Load: load, ForgetPause: m.ForgetPause, WatchPauses: m.WatchPauses, PauseKeys: m.ReadPauses.Keys,
 		Capacity: capacity, SettingsFile: settings, WatchConfig: watch, CoresPerStep: cores, BuildHours: hours, Logf: m.Say,
 		Run: func(ctx context.Context, a sdkstep.StepAsk) (any, error) {
 			if err := m.Prepare(ctx); err != nil {

modules/mesh-build-node/cmd/mesh-build-node/manifest_test.go

@@ -65,6 +65,11 @@ func TestManifestDeclaresTheAccountTheCapabilityAndThePackages(t *testing.T) {
 	if home["type"] != "directory" || home["mode"] != "0700" || home["owner"] != "mesh-build-node" || home["place"] != "." {
 		t.Errorf("home = %v, want its directory at mode 0700 owned by the account", home)
 	}
+	// ADR 0664 §1 (issue 1748): the delay a step given again waits is the tool runner's capability; the want waits on a node whose
+	// runner does not state it.
+	if !slices.Contains(m.Capabilities, "seat-settle-delay") {
+		t.Errorf("capabilities = %v, want seat-settle-delay", m.Capabilities)
+	}
 	if !slices.Contains(m.Capabilities, "user-namespaces") {
 		t.Errorf("capabilities = %v, want user-namespaces", m.Capabilities)
 	}
@@ -112,7 +117,7 @@ func TestManifestKeepsItsStatesClaimsItsBuildSeatAndDeclaresItsHealthTool(t *tes
 	if want := []string{"keys", "pauses", "steps", "toolchains"}; !slices.Equal(states, want) {
 		t.Errorf("state = %v, want %v", states, want)
 	}
-	if len(m.Claims) != 1 || m.Claims[0].Name != Seat || !slices.Equal(m.Claims[0].Serves, []string{"current", "pause", "resume"}) {
+	if len(m.Claims) != 1 || m.Claims[0].Name != Seat || !slices.Equal(m.Claims[0].Serves, []string{"current", "drop", "pause", "resume"}) {
 		t.Errorf("claims = %v, want the seat %s alone", m.Claims, Seat)
 	}
 	if !slices.Contains(m.Tools, HealthTool) {

modules/mesh-build-node/cmd/mesh-build-node/module.go

@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"fmt"
+	stdio "git.novox.be/novox/mesh-sdk/go"
 	"net/http"
 	"os"
 	"sync"
@@ -51,6 +52,8 @@ type Module struct {
 	ReadPauses StateRead
 	// ForgetPause deletes one key of the pauses state: a dropped ask's, once it is refused (the seat's verb drop).
 	ForgetPause func(key string) error
+	// WatchPauses follows the drops other holders write in the shared pauses state (stdio.State(...).Watch).
+	WatchPauses func(key string, handle func(stdio.StateChange) error) error
 	// Emit tells the bus an event (stdio.Emit); nil emits nothing. The guard emits toolchain.reported after each write of
 	// the toolchains key, so the indexer, which holds no timer, learns that the bucket exists (issue 1444).
 	Emit func(eventType string, body any) error