Final report on current head 8bc3af0:

• Implemented routable flow node outcomes with separate result tracking, plus timeout-aware flow execution and persistence.
• Hardened flow runtime behavior after review: shell/action cwd handling, end-to-end timeout coverage across node phases, unique live-state temp writes, signal-aware shell failures, external acpx/flows import support for authored flow files, and queue-owner arg sanitization for debugger flags.
• Added/updated regression coverage for timeout routing, async callback/parse timeout cases, concurrent live writes, signal exits, external flow imports, and debugger-flag sanitization.
• Resolved the stale Codex review thread and verified the remaining docs/examples are in sync.

Validation run on this head:

• pnpm run check ✅
• pnpm run check:docs ✅ (earlier in the branch; docs-only updates remained covered)
• codex review --base main -> addressed surfaced P1 items around flow cwd/timeout handling and external flow import resolution; no remaining unresolved P0/P1 feedback on the branch
• Built CLI smoke for external flow imports ✅
  • node dist/cli.js --approve-all --cwd <tmpdir> --format json flow run <tmp-flow.ts>

What I could not fully verify locally:

• I did not exercise a real third-party external project with its own helper modules beyond the temp external-flow smoke.
• I did not do staging/production verification beyond GitHub Actions CI on this PR.

CI is green on the current PR head.

Landed via temp rebase onto main.

• Gate: validation completed for this repo's change scope
• Land commit: 7e154e9
• Merge commit: 697ee1f

Thanks @osolmaz!