docs(progress): sync t4.1 completion

[DeliciousBuding]

Summary

• Sync docs/progress/MASTER.md after test(e2e): add chat acceptance bundle #412 merged and [T4.1] Add focused chat acceptance gate #389 was manually closed.
• Mark Phase 4 as 1/3 complete and set [T4.2] Add semi-automated Visual QA artifact loop #390 as the active next task with the adaptive drift warning context.

Tests

• pwsh ./scripts/verify/verify-doc-ssot.ps1
• git diff --check

Evidence Boundary

Docs-only progress sync. No runtime, real login, model/API, packaged Desktop, signing, release upload, or production claim.

Summary by CodeRabbit

• Documentation
  • Updated the project progress tracker to reflect Phase 4 status and milestone completion.
  • Marked a previously open acceptance task as completed and moved the active focus to the next visual QA task.
  • Revised the next-steps guidance and session log with the latest progress, blockers, and status details.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 1e2c4745-effd-456e-92e9-1f3f408479a8

📥 Commits

Reviewing files that changed from the base of the PR and between 50df294 and c3d180f.

📒 Files selected for processing (1)

• docs/progress/MASTER.md

---

📝 Walkthrough

Walkthrough

docs/progress/MASTER.md is updated to reflect Phase 4 progress: T4.1 (#389) is marked closed via #412, the Phase 4 checklist advances to 1/3 complete, T4.2 (#390) becomes the active task, next steps are revised for Visual QA tooling, and a session log entry is added.

Phase 4 Tracker Sync

Layer / File(s)	Summary
Phase 4 status, next steps, and session log docs/progress/MASTER.md	Milestone row updated from 3/0 to 2/1 open/closed; T4.1 marked closed via #412; phase checklist updated to 1/3 complete with T4.2 as active task; next steps revised to prefer Node/TypeScript/Playwright for Visual QA; session log entry added for Phase 4 sync.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• TokenDanceLab/AgentHub#394: Initializes the same docs/progress/MASTER.md Real Foundation Hardening tracker that this PR updates.
• TokenDanceLab/AgentHub#411: Previously updated the same tracker to complete Phase 3 and set T4.1 as active, which this PR follows up by closing T4.1 and activating T4.2.

Poem

🐇 Hop hop, a task is done,
T4.1 closed, T4.2 begun!
The tracker ticks from zero to one,
Visual QA loop has just begun,
With Node and Playwright in the sun~ 🌟

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the docs-only update syncing T4.1 completion in the progress tracker.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/phase4-t4-1-progress-sync

---

_{Comment @coderabbitai help to get the list of available commands.}