# Phase 5 Closeout Checklist

Status: Canonical transition checklist
Related roadmap: `docs/transition_roadmap_locked.md`

## Goal
Confirm Phase T5 (memory surface explicitness and truth hierarchy consolidation) is complete.

## Checklist

### Surface semantics
- [x] canonical memory surfaces spec exists (`docs/memory_surfaces_spec.md`)
- [x] truth hierarchy policy exists (`docs/truth_hierarchy_policy.md`)
- [x] write-side artifact semantics are classified (`docs/write_side_artifacts_semantics.md`)

### Integration alignment
- [x] integration guides align with transcript-vs-durable policy
- [x] shared integration docs reference new canonical semantics docs

### Runtime metadata (additive)
- [x] execute output includes surface provenance metadata
- [x] explain payload includes surface provenance diagnostics
- [x] no contract-breaking field removals

### Validation and metrics
- [x] eval includes surface-aware metrics
- [x] regression tests pass

## Exit criteria
Phase 5 is complete when memory surface semantics are explicit in docs and additive runtime metadata supports surface-aware validation without breaking existing integrations.

## Next phase
Proceed to Phase T6:
- read-side/runtime hardening and consistency polish.
