Merge branch 'codex/goal-tools' into codex/goal-session

# Conflicts:
#	.agents/notes/implemented/feature/2026-07-19-persisted-same-session-goal-domain.i18n.yaml
#	docs/cordis-catalog/events.md
#	docs/core-data-structures/core.md
#	docs/event-producer-consumer.md
#	docs/module-graph.md
#	examples/package.json
#	packages/core/agent/README.md
#	packages/core/agent/src/types.ts
#	website/zh-CN/api/harness/events.md

packages/core/agent-loop/src/agent.ts

@@ -252,7 +252,6 @@ export class ReactLoopAgent implements Agent {
     const context = {
       content,
       source,
-      ...options?.envelope !== undefined ? { envelope: options.envelope } : {},
       ...options?.meta !== undefined ? { meta: options.meta } : {},
     }
     if (isTurnOpen(this.session)) {
@@ -403,7 +402,7 @@ export class ReactLoopAgent implements Agent {
       cancelReason: () => this.cancelReason,
       clearCancel: () => { this.cancelRequested = false },
       withToolBatch: run => this.withToolBatch(run),
-      // Pre-step cancellation re-parks without emitting a status transition.
+      // Pre-start cancellation settles queued-work waiters before publishing idle.
       settleIdle: () => { this.settleIdleWaiters() },
     }))
   }