P05 Days 6-10 - Chronicle - Session Tracking and Rewind

[theschoolofai]

Sub-issue for parent #7.\n\n## Phase\n- Days 6-10 (2026-02-22 to 2026-02-26)\n\n## Scope\n- Add rewind/replay engine and state restoration invariants.\n\n## Exit Criteria\n- [ ] Scope implementation merged via PR\n- [ ] Relevant tests for this phase pass in CI\n- [ ] Delivery README updated with evidence

[theschoolofai]

Closing this issue because the capstone work for this track is now concluded and the delivered implementation was integrated into current master. Any further enhancements should be tracked as new post-capstone issues.