# Progress — teamwork_preview_challenger_m3_iter2_1

**Last visited**: 2026-10-05T22:06:00Z
**Current status**: Empirical verification complete — preparing handoff report

## Completed Steps
- [x] Received dispatch message and logged in `DISPATCH.md`
- [x] Initialized `BRIEFING.md` and `progress.md`
- [x] Read mandatory docs: `ORIGINAL_REQUEST.md` (specifically Section `## 2026-10-05T20:25:13Z`) and `PROJECT.md`
- [x] Reviewed Worker Rem 1's handoff and Challenger M3 Iteration 1 findings
- [x] Re-evaluated adversarial semantic queries via `python tests/test_mem0_adversarial_semantic.py`:
  - Scoped search: 34/34 Passed (100.0%, 0 failures)
  - Unscoped search: 34/34 (100%) have DSCons in Top-1 (25/34 overall pass due to foreign hits in ranks 2-3)
- [x] Executed baseline verification scorecard via `python tests/test_mem0_verification.py`: 8/8 Passed (100.0%)
- [x] Executed regression test suites:
  - `pytest tests/test_mem0_m1_selective_cleanup.py -v`: 5/5 Passed (100.0%)
  - `pytest tests/test_mem0_m2_ingestion.py -v`: 6/6 Passed (100.0%)
  - `pytest tests/test_architecture_boundary_enforcement.py -v`: 5/5 Passed (100.0%)
- [x] Conducted targeted probes on previous collision queries:
  - "AEC pricing norms": Top-1 score 0.7208 (DSCons RULE-AEC-02), margin over foreign +0.1603. Collision eliminated.
  - "database precision": Top-1 score 0.7835 (DSCons RULE-BACKEND-02), margin over foreign +0.1695. Collision eliminated.
- [x] Verified zero foreign records in Top-1 across all DSCons domain queries in both unscoped and scoped modes
- [x] Verified zero forbidden legacy remnants across all 476 memories in Qdrant
- [x] Authored and executed `tests/test_mem0_m3_iter2_challenger_probe.py`: 100% Passed under pytest
- [x] Updated `BRIEFING.md` with final findings

## Next Steps
- [ ] Write 5-component `handoff.md` with explicit verdict APPROVE
- [ ] Send completion message to parent (`2c75583f-c14a-419c-82d2-6487ff809fec`)