# BRIEFING — 2026-06-27T03:25:00Z

## Mission
Implement test coverage improvements for reversecore_mcp/tools/common/assembler.py to hit 100% test coverage.

## 🔒 My Identity
- Archetype: Implementer / QA / Specialist
- Roles: implementer, qa, specialist
- Working directory: /Users/sjkim1127/Reversecore_MCP/.agents/worker_m7_3/
- Original parent: 13d87357-cec0-4f29-9fd1-e0754da4e380
- Milestone: Assembler Test Coverage Improvement

## 🔒 Key Constraints
- CODE_ONLY network mode: No external internet access.
- Minimal change principle.
- No dummy/facade implementations or cheating.
- Must follow project conventions (fastmcp, pytest, etc.).

## Current Parent
- Conversation ID: 38512e50-4f26-4ad0-b7ec-1e09bd5cc4ab
- Updated: 2026-06-27T03:25:00Z

## Task Summary
- **What to build**: Test coverage improvements in `tests/unit/tools/common/test_assembler.py` for `reversecore_mcp/tools/common/assembler.py`.
- **Success criteria**: 100% test coverage of `assembler.py`, all unit tests passing.
- **Interface contracts**: `reversecore_mcp/tools/common/assembler.py`
- **Code layout**: Source in `reversecore_mcp/`, tests in `tests/unit/`

## Key Decisions Made
- Wrote recursion-safe mock `__import__` hook to avoid recursion depth error.
- Subclassed mock module using custom module-like class in `test_capstone_v6_attribute_fallbacks` to trigger proper `AttributeError`/`ImportError` paths.
- Referenced constants and helper methods from the reloaded/mocked namespace `assembler_mod` within parameterized tests to resolve test failure due to namespace mismatches.
- Patched `KsError` to a custom exception subclass `MockKsError` in generic exception test to cover the `except Exception` branch since `KsError` defaulted to `Exception` when Keystone dynamic library failed to load in the local python environment.

## Artifact Index
- `/Users/sjkim1127/Reversecore_MCP/.agents/worker_m7_3/handoff.md` — Implementation report and handoff

## Loaded Skills
- **Source**: `/Users/sjkim1127/.gemini/config/plugins/google-antigravity-sdk/skills/google-antigravity-sdk/SKILL.md`
- **Local copy**: `/Users/sjkim1127/Reversecore_MCP/.agents/worker_m7_3/skills/google-antigravity-sdk/SKILL.md`
- **Core methodology**: Google Antigravity SDK orchestration, multi-agent systems, agent configuration, safety policies, observability, built-in tools.

## Change Tracker
- **Files modified**: `tests/unit/tools/common/test_assembler.py` - Integrated and enhanced proposed tests.
- **Build status**: Pass (58/58 unit tests passing successfully)
- **Pending issues**: None

## Quality Status
- **Build/test result**: Pass (58/58 passed)
- **Lint status**: 0 violations (fully fixed and formatted with ruff and black)
- **Tests added/modified**: Category A, B, C, D, E test cases added to `tests/unit/tools/common/test_assembler.py`.
