Merge branch 'codex/simp-agent-entry-state' into codex/simp-unify-agent-session-id

# Conflicts:
#	docs/config-catalog.md
#	docs/cordis-catalog/services.md
#	docs/event-producer-consumer.md
#	docs/rfc/implemented/architecture/2026-06-18-agent-lifecycle-and-ownership-seams.md
#	docs/rfc/implemented/architecture/2026-06-20-branded-ids.md
#	docs/rfc/implemented/simplification/2026-06-20-remove-agent-boundary-mirror-events.md
#	docs/rfc/proposed/feature/2026-07-07-claude-code-and-codex-subagent-backends.md
#	docs/rfc/proposed/simplification/2026-06-20-unify-agent-and-session-id.md
#	packages/bash/tool-bash/README.md
#	packages/bash/tool-bash/src/index.ts
#	packages/bash/tool-bash/tests/tools.spec.ts
#	packages/core/agent-loop/README.md
#	packages/core/agent-loop/tests/properties.spec.ts
#	packages/core/agent/README.md
#	packages/core/agent/src/index.ts
#	packages/guard/repeat-tool-guard/src/index.ts
#	packages/hooks/hooks-claude/tests/bridge.spec.ts
#	packages/subagent/subagent-acp/tests/mock-acp-server.ts
#	packages/ui/acp/tests/dispose.spec.ts
#	packages/ui/stdio-agent/src/index.ts
#	packages/ui/stdio-agent/src/stdio-chat.ts
#	packages/ui/stdio-agent/tests/stdio-chat.spec.ts
#	packages/util/brand/src/index.ts

packages/workflow/tool-workflow/tests/tool-workflow.spec.ts

@@ -224,13 +224,8 @@ describe('dsh-tool-workflow', () => {
 
   describe('composition with the REAL worker-thread engine (the mock above must stay honest)', () => {
     it('an abort releases the tool even when the script parks on a promise no hook owns', async () => {
-      // Regression for the review-found turn wedge: the tool awaits
-      // run.result BEFORE its disposing finally, the registry and the loop
-      // await the tool — so if cancellation could not settle result (a script
-      // parked on `await new Promise(() => {})`), an aborted turn stayed
-      // wedged forever. The seam now guarantees result settles within the
-      // grace of cancel(); this drives that guarantee through the real
-      // registry + real tool + real engine.
+      // The tool and loop await run.result before cleanup, so cancellation must settle a script
+      // parked on an unowned promise. Exercise that guarantee through the real registry and worker.
       const ctx = new Context()
       await ctx.plugin(SystemPrompt)
       await ctx.plugin(ToolRegistry)