# Phase 140: Closure And Regression Audit - Context

**Gathered:** 2026-04-11
**Status:** Ready for planning

<domain>
## Phase Boundary

This phase is the intermediate regression gate inside `v1.68` with one bounded
verification pass over the new compiled-knowledge surface and its supporting
docs/runtime scripts before later L1/L2 follow-on work.

The phase owns:

- one final bounded verification slice for the milestone requirements
- one summary of what the compiled-knowledge surface now provides and what
  remains out of scope
- planning-state readiness for Phase `141` and Phase `142`

</domain>

<decisions>
## Implementation Decisions

- **D-01:** Reuse the targeted slices already exercised in Phases `138` and
  `139`; do not broaden into full-repo testing.
- **D-02:** Treat the dedicated acceptance script as the primary milestone
  evidence artifact.
- **D-03:** Keep the closure wording explicit that compiled knowledge is still
  non-authoritative and staging-aware.

</decisions>

<canonical_refs>
## Canonical References

- `.planning/REQUIREMENTS.md`
- `.planning/ROADMAP.md`
- `.planning/phases/138-knowledge-compilation-contract/138-01-SUMMARY.md`
- `.planning/phases/139-compiled-knowledge-surface-and-acceptance/139-01-SUMMARY.md`
- `research/knowledge-hub/runtime/scripts/run_l2_knowledge_report_acceptance.py`
- `research/knowledge-hub/tests/test_runtime_scripts.py`
- `research/knowledge-hub/tests/test_l2_backend_contracts.py`
- `research/knowledge-hub/tests/test_aitp_cli_e2e.py`

</canonical_refs>

<deferred>
## Deferred Ideas

- background rebuild hooks
- multi-user compiled-memory sync
- milestone archival and next-milestone selection

</deferred>

---

*Phase: 140-closure-and-regression-audit*
*Context gathered: 2026-04-11*
