# Phase 6 Closeout Checklist

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

## Goal
Confirm Phase T6 (read-side/runtime hardening) is complete with deterministic behavior, calibrated confidence semantics, and stable contracts.

## Checklist

### Determinism hardening
- [x] `memory.execute` result ordering normalized and deterministic
- [x] chain ordering normalized before confidence/next-action evaluation
- [x] warning diagnostics normalized (deduped/sorted)
- [x] deterministic order regression tests added and passing

### Confidence/next-action calibration
- [x] warning-aware high-confidence gating preserved
- [x] causal ungrounded policy prefers `ask_clarifying`
- [x] non-causal deterministic broaden path preserved
- [x] edge-case confidence tests added and passing

### Contract clarity
- [x] contributor-facing runtime contract semantics documented
- [x] confidence / next_action / grounding fields clarified
- [x] additive source provenance semantics documented

### Validation sweep
- [x] read-side/runtime contract tests pass
- [x] write-side compatibility/parity tests still pass
- [x] eval summary emitted with surface-aware metrics

## Eval snapshot (T6 closeout)
- count: 50
- non_empty_results_rate: 1.0
- confidence_high_rate: 0.88
- confidence_medium_rate: 0.12
- warning_rate: 0.06
- answerable_rate: 1.0
- causal_grounding_achieved_rate: 1.0
- causal_strong_grounding_rate: 0.8421
- surface_alignment_rate: 1.0
- durable_query_archive_hit_rate: 0.88
- ungrounded_causal_surface_mismatch_rate: 0.0

## Exit criteria
Phase 6 is complete when runtime behavior is deterministic, confidence/next-action semantics are calibrated and documented, and regression/eval evidence shows no contract regressions.

## Next phase
Proceed to Phase T7 (optional): orchestration consolidation only if boundaries remain stable and simplification is justified.
