# Review: AD-606 Think-in-Memory (Re-review #2)

**Prompt:** prompts/ad-606-think-in-memory.md
**Reviewer:** Architect
**Date:** 2026-04-27 (third pass)
**Verdict:** ✅ Approved
**Previous Verdict:** ⚠️ Conditional

## Improvements Since Prior Review
- **Constructor contradiction RESOLVED.** No `else` branch. `config: Any` is required.
- `ThoughtType` is a `StrEnum` with five explicit members. Validation falls back to `CONCLUSION` with a warning.
- Explicit Builder note: "Do NOT use `getattr(self, ...)` for instance attributes — it indicates the attribute was never properly initialized." Strong guidance.
- Importance threshold + per-cycle cap both enforced.
- Conclusion-to-thought-type mapping documented.
- Recall via `recall_by_anchor_scored(channel="thought")` keeps thoughts queryable.

## Required
None.

## Recommended
- The `_map_conclusion_to_thought_type` helper uses `getattr(conclusion, 'conclusion_type', None)` and `hasattr(ct, 'value')` — the very pattern the Builder note warns against. Either confirm `ConclusionEntry.conclusion_type` always exists (so direct attribute access is safe) or accept this as defensive code at a system boundary.
- Builder note says "Verify the method name by searching `agent_working_memory.py` for `get_conclusions` or `recent_conclusions`." Add a hard Verify step at the top of Section 3 instead of an inline note — easier to track.

## Nits
None.

## Recommendation
Ship it.
