# Build Report: AD-669 Cross-Thread Conclusion Sharing

**Prompt:** prompts/ad-669-cross-thread-conclusion-sharing.md  
**Builder:** 2026-04-27, GitHub Copilot  
**Status:** Complete with waived NATS/xdist full-suite failure

## Files Changed
- src/probos/cognitive/agent_working_memory.py
- src/probos/cognitive/cognitive_agent.py
- src/probos/config.py
- tests/test_ad669_conclusion_sharing.py
- PROGRESS.md
- DECISIONS.md
- docs/development/roadmap.md
- prompts/build-reports/ad-669-cross-thread-conclusion-sharing-build.md

## Sections Implemented
- Section 1: Added `ConclusionType` StrEnum and `ConclusionEntry` dataclass.
- Section 2: Added capped `_conclusions` deque to AgentWorkingMemory.
- Section 3: Added `record_conclusion()` write API.
- Section 4: Added `get_active_conclusions()` and `render_conclusions()` read/render APIs.
- Section 5: Rendered sibling conclusions as priority 6 in `render_context()`.
- Section 6: Serialized conclusions in `to_dict()`.
- Section 7: Restored conclusions in `from_dict()` with stale pruning and malformed-entry skip.
- Section 8: Added conclusion TTL and max-count fields to `WorkingMemoryConfig`.
- Section 9: Recorded conclusions after act/report in `_run_cognitive_lifecycle()`.
- Section 10: Added conclusion summary, classification, and relevance-tag helpers near `_summarize_action()`.
- Section 11: Injected sibling conclusions before `decide()`.
- Tests: Added 16 focused tests.
- Tracking: Updated PROGRESS.md, DECISIONS.md, and docs/development/roadmap.md.

## Post-Build Section Audit
- Section 1: Implemented in `agent_working_memory.py`.
- Section 2: Implemented in `AgentWorkingMemory.__init__()`.
- Section 3: Implemented in `record_conclusion()`.
- Section 4: Implemented in `get_active_conclusions()` and `render_conclusions()`.
- Section 5: Implemented in `render_context()` priority ordering.
- Section 6: Implemented in `to_dict()`.
- Section 7: Implemented in `from_dict()`.
- Section 8: Implemented in `WorkingMemoryConfig`.
- Section 9: Implemented in `_run_cognitive_lifecycle()` after AD-573 action recording.
- Section 10: Implemented in `_extract_conclusion_summary()`, `_classify_conclusion()`, and `_extract_relevance_tags()`.
- Section 11: Implemented before `decision = await self.decide(observation)`.
- Tests and tracking are complete.

## Tests
- `d:/ProbOS/.venv/Scripts/pytest.exe tests/test_ad669_conclusion_sharing.py -v -n 0`: 16 passed
- `d:/ProbOS/.venv/Scripts/pytest.exe tests/test_agent_working_memory.py tests/test_bf125_working_memory_desync.py tests/test_bf127_crew_only_wm_persistence.py -v -n 0`: 57 passed
- `d:/ProbOS/.venv/Scripts/pytest.exe tests/test_config.py -v -x -n 0`: 3 passed
- `d:/ProbOS/.venv/Scripts/pytest.exe tests/test_cognitive_agent.py -q -n 0`: 56 passed
- `git diff --check -- src/probos/cognitive/agent_working_memory.py src/probos/cognitive/cognitive_agent.py src/probos/config.py tests/test_ad669_conclusion_sharing.py`: passed with no output
- `d:/ProbOS/.venv/Scripts/pytest.exe tests/ -x -q`: stopped at 24 failed, 6489 passed, 14 skipped, 457 warnings, 2 errors
- Serial classification rerun for `tests/test_knowledge_store.py::TestGitIntegration::test_auto_commit_after_debounce`: passed

## Full-Suite Classification
The full-suite failure matched the user-waived NATS/xdist worker-crash class, with repeated worker terminations and NATS stream collisions:

```text
nats.js.errors.BadRequestError: stream name already in use with a different configuration
worker 'gw11' crashed while running tests/test_ad567b_anchor_recall.py::TestBudgetEnforcement::test_budget_stops_accumulation
worker 'gw1' crashed while running tests/test_architect_api.py::TestDesignSubmitEndpoint::test_submit_returns_started
worker 'gw24' crashed while running tests/test_cognitive_integration.py::TestCognitiveIntegration::test_nl_single_read
```

The one non-NATS assertion surfaced in the xdist run, `test_auto_commit_after_debounce`, passed serially and is treated as load-sensitive timing noise.

## Notes
- No embedding-based redundancy detection, API endpoints, event types, NATS messages, or unrelated modules were added.
- `_build_user_message()` and `_build_cognitive_baseline()` were not modified.
- Conclusion sharing is intra-agent and in-memory only.
