# BRIEFING — 2026-06-26T22:29:04Z

## Mission
Review the `patch_explainer.py` implementation code and `test_patch_explainer.py` unit tests to ensure high quality, correctness, and coverage.

## 🔒 My Identity
- Archetype: reviewer_and_adversarial_critic
- Roles: reviewer, critic
- Working directory: /Users/sjkim1127/Reversecore_MCP/.agents/reviewer_m6_1/
- Original parent: 0c44a811-b4db-47e1-891b-60482d466a84
- Milestone: Milestone 6 (patch_explainer.py coverage)
- Instance: 1 of 1

## 🔒 Key Constraints
- Review-only — do NOT modify implementation code

## Current Parent
- Conversation ID: 0c44a811-b4db-47e1-891b-60482d466a84
- Updated: not yet

## Review Scope
- **Files to review**:
  - `reversecore_mcp/tools/common/patch_explainer.py`
  - `tests/unit/tools/common/test_patch_explainer.py`
- **Interface contracts**: `PROJECT.md` or `AGENTS.md`
- **Review criteria**: correctness, completeness, robust exception/deserialization handling, test coverage, code style.

## Key Decisions Made
- Confirmed that `patch_explainer.py` has 100% test coverage.
- Confirmed code quality checks (ruff, black) pass on both files.
- Confirmed total codebase test coverage is at 88% (passing the 80% threshold).
- Issued APPROVE verdict in `handoff.md`.

## Artifact Index
- `/Users/sjkim1127/Reversecore_MCP/.agents/reviewer_m6_1/BRIEFING.md` — Agent working memory
- `/Users/sjkim1127/Reversecore_MCP/.agents/reviewer_m6_1/ORIGINAL_REQUEST.md` — Original request record
- `/Users/sjkim1127/Reversecore_MCP/.agents/reviewer_m6_1/progress.md` — Liveness heartbeat
- `/Users/sjkim1127/Reversecore_MCP/.agents/reviewer_m6_1/handoff.md` — Review and Challenge Handoff Report

## Review Checklist
- **Items reviewed**: `patch_explainer.py`, `test_patch_explainer.py`
- **Verdict**: APPROVE
- **Unverified claims**: None

## Attack Surface
- **Hypotheses tested**: Checked for deserialization resilience, decompilation loop failure safety, and robustness of syntactic heuristics.
- **Vulnerabilities found**: None.
- **Untested angles**: Subprocess execution scaling (out of scope).
