# AD-677 Context Provenance Metadata Build Report

**Date:** 2026-04-30
**Status:** Complete
**Prompt:** `prompts/ad-677-context-provenance-metadata.md`
**Builder:** GitHub Copilot Builder

## Summary

Implemented context provenance metadata for retrieved context. Added provenance tags and envelopes, an Oracle query wrapper, a context provenance event type, and TieredKnowledgeLoader event emission while preserving existing string-returning knowledge loader APIs.

## Files Changed

- `src/probos/cognitive/provenance.py`
  - Added `ProvenanceTag`, `ProvenanceEnvelope`, `compute_content_hash()`, and `query_with_provenance()`.
- `src/probos/events.py`
  - Added `EventType.CONTEXT_PROVENANCE_INJECTED`.
- `src/probos/cognitive/tiered_knowledge.py`
  - Emitted provenance telemetry after existing tier-load event emission.
- `tests/test_ad677_context_provenance.py`
  - Added 11 focused AD-677 tests.
- `tests/test_ad585_tiered_knowledge.py`
  - Updated the existing event-emission assertion to include the new paired provenance event.
- `PROGRESS.md`, `docs/development/roadmap.md`
  - Updated AD-677 tracking.
- `prompts/build-reports/ad-677-build.md`
  - Added this build report.

## Sections Implemented

- `### Section 1: Create ProvenanceTag dataclass`
  - Implemented in `src/probos/cognitive/provenance.py`.
- `### Section 2: Add provenance-aware query function`
  - Implemented `query_with_provenance()` in `src/probos/cognitive/provenance.py`.
- `### Section 3: Add CONTEXT_PROVENANCE event type`
  - Added `CONTEXT_PROVENANCE_INJECTED` after `KNOWLEDGE_TIER_LOADED` in `src/probos/events.py`.
- `### Section 4: Emit provenance events during context injection`
  - Added paired provenance telemetry emission in `TieredKnowledgeLoader._emit_tier_event()`.
- `## Tests`
  - Added 11 AD-677 tests and updated the adjacent tiered-knowledge event test.
- `## Tracking`
  - Updated `PROGRESS.md`, `docs/development/roadmap.md`, and this build report.

## Post-Build Section Audit

- `### Section 1: Create ProvenanceTag dataclass` — complete; tag fields, age, staleness, inline formatting, and content hash support are implemented.
- `### Section 2: Add provenance-aware query function` — complete; Oracle query results are wrapped as `ProvenanceEnvelope` objects and failures degrade to an empty list.
- `### Section 3: Add CONTEXT_PROVENANCE event type` — complete; event enum value exists at the specified anchor.
- `### Section 4: Emit provenance events during context injection` — complete; TieredKnowledgeLoader emits provenance telemetry through the existing event callback path after the tier-loaded event.
- `## Tests` — complete; 11 new AD-677 tests pass and adjacent event tests pass.
- `## Tracking` — complete; trackers and build report updated.

## Tests

- `d:/ProbOS/.venv/Scripts/pytest.exe tests/test_ad677_context_provenance.py -v -n 0`
  - Result: 11 passed.
- `d:/ProbOS/.venv/Scripts/pytest.exe tests/test_ad677_context_provenance.py tests/test_ad585_tiered_knowledge.py tests/test_events.py -v -n 0`
  - Result: 77 passed.
- `d:/ProbOS/.venv/Scripts/pytest.exe tests/ -q -n 4 --dist=loadfile`
  - Result: 1 failed, 10229 passed, 18 skipped.
  - Failure: `tests/test_bf234_ward_room_dispatch_dedup.py::test_duplicate_path_latency`.
- `d:/ProbOS/.venv/Scripts/pytest.exe tests/test_bf234_ward_room_dispatch_dedup.py::test_duplicate_path_latency -q -n 0`
  - Result: 1 passed.
  - Classification: environmental parallel full-gate latency failure per sweep rule; affected test passed serially.

## Deviations

- Used the wave execution plan full-gate command `-n 4 --dist=loadfile` instead of the prompt's older `-n auto` acceptance text.
- Full parallel gate reported one unrelated BF-234 latency failure; the affected test passed serial rerun and was accepted as environmental under `prompts/BUILDER-EXECUTION-PLAN.md`.
