# AD-678 Memory Transparency Mechanism Build Report

**Date:** 2026-04-30
**Status:** Complete
**Prompt:** `prompts/ad-678-memory-transparency-mechanism.md`
**Builder:** GitHub Copilot Builder

## Summary

Implemented a read-only memory transparency service that wraps episodic recall results with memory-specific provenance metadata. The service exposes transparent memory rendering, similarity-confidence filtering, and prompt formatting without modifying `EpisodicMemory`, `Episode`, or ChromaDB storage.

## Files Changed

- `src/probos/cognitive/memory_transparency.py`
  - Added `MemoryProvenance`, `TransparentMemory`, and `MemoryTransparencyService`.
- `tests/test_ad678_memory_transparency.py`
  - Added 7 focused tests for memory provenance, rendering, wrapping, filtering, and formatting.
- `PROGRESS.md`, `docs/development/roadmap.md`
  - Updated AD-678 tracking.
- `prompts/build-reports/ad-678-build.md`
  - Added this build report.

## Sections Implemented

- `### Section 1: Create MemoryTransparencyService`
  - Implemented the new memory transparency module with the prompt-specified dataclasses and service methods.
- `## Tests`
  - Implemented the 7 prompt-specified tests in `tests/test_ad678_memory_transparency.py`.
- `## Tracking`
  - Updated `PROGRESS.md`, `docs/development/roadmap.md`, and this build report.

## Post-Build Section Audit

- `### Section 1: Create MemoryTransparencyService` — complete; recalled episodes can be wrapped with memory provenance, rendered, filtered by confidence, and formatted for prompt injection.
- `## Tests` — complete; 7 AD-678 tests pass.
- `## Tracking` — complete; trackers and build report updated.

## Tests

- `d:/ProbOS/.venv/Scripts/pytest.exe tests/test_ad678_memory_transparency.py -v -n 0`
  - Result: 7 passed.
- `d:/ProbOS/.venv/Scripts/pytest.exe tests/test_ad678_memory_transparency.py tests/test_ad677_context_provenance.py -v -n 0`
  - Result: 18 passed.
- `d:/ProbOS/.venv/Scripts/pytest.exe tests/ -q -n 4 --dist=loadfile`
  - Result: 10237 passed, 18 skipped.

## Deviations

- Used the wave execution plan full-gate command `-n 4 --dist=loadfile` instead of the prompt's older `-n auto` acceptance text.
