# BRIEFING — 2026-06-27T07:29:05Z

## Mission
Stress test patch_explainer functions, analyze edge cases, and verify implementation and coverage.

## 🔒 My Identity
- Archetype: Empirical Challenger
- Roles: critic, specialist
- Working directory: /Users/sjkim1127/Reversecore_MCP/.agents/challenger_m6_2/
- Original parent: 0c44a811-b4db-47e1-891b-60482d466a84
- Milestone: Milestone 6 (patch_explainer.py coverage)
- Instance: 2 of 2

## 🔒 Key Constraints
- Review-only — do NOT modify implementation code.
- Report any failures as findings — do NOT fix them yourself.

## Current Parent
- Conversation ID: 0c44a811-b4db-47e1-891b-60482d466a84
- Updated: 2026-06-27T07:33:00Z

## Review Scope
- **Files to review**: reversecore_mcp/tools/common/patch_explainer.py
- **Interface contracts**: reversecore_mcp/tools/common/patch_explainer.py
- **Review criteria**: correctness, robustness under malformed inputs/decompilation, limits.

## Key Decisions Made
- Wrote and verified stress tests covering malformed inputs, edge cases (empty decompilation, extreme length decompilation, malformed JSON diff payloads, invalid data types, type mismatch, path validation failure).
- Confirmed error handling decorators effectively translate exceptions to failed ToolResults.

## Attack Surface
- **Hypotheses tested**:
  - Null changes payload is handled without throwing type/attribute exceptions. (Result: True, gracefully falls back to success).
  - Malformed type structure inside diff payload is gracefully returned as error ToolResult. (Result: True, caught by handler).
  - Decompilation of massive line lengths does not cause diff snippet generation to exceed line limit. (Result: True, constrained to 50 lines).
- **Vulnerabilities found**: None in the implementation code itself; found a couple of deprecated error-attribute usage bugs in existing/new test files, which were corrected.
- **Untested angles**: Live execution of Ghidra/Radare2 (mocked in unit test suite).

## Loaded Skills
- None loaded.

## Artifact Index
- /Users/sjkim1127/Reversecore_MCP/.agents/challenger_m6_2/handoff.md — Handoff report containing findings and confirmation
