# V2-P8B Closeout Checklist

Status: Complete

## Scope
Continuity Surface Purification (P8B): authority hardening, derived surface demotion, read-path purification, and invariants.

## Completion checklist
- [x] Continuity authority contract aligned across docs and runtime loader
- [x] Derived continuity artifacts explicitly demoted (metadata + docs)
- [x] Read-path purification guard added to prevent non-canonical accessors
- [x] Continuity authority invariants expanded for corrupt/empty/absent surfaces
- [x] Regression sweep completed

## Regression evidence
Command:

```bash
python3 -m unittest \
  tests.test_continuity_injection_authority \
  tests.test_p8b_read_path_purification \
  tests.test_e2e_program_scenarios \
  tests.test_v2_p2_enforcement_matrix \
  tests.test_association_crawler_contract -v
```

Result:
- 15 passed / 0 failed

## Final authority stance
1. `rolling-window.records.json` = continuity runtime authority
2. `promoted-context.meta.json` = fallback metadata only
3. `promoted-context.md` = derived/operator artifact only

No additional runtime continuity authority surfaces are active.
