mrt-fe-review-washer

The server uses `execFileAsync` for `git diff` and various file system operations (`fs.mkdir`, `fs.writeFile`, `fs.readFile`, `fs.readdir`, `fs.unlink`). While `execFileAsync` is generally safer than `exec` against shell injection for well-separated arguments, allowing `PROJECT_ROOT`, `DATA_DIR`, or `CUSTOM_RULES_PATH` environment variables (or the `repoPath` tool parameter) to point to arbitrary sensitive paths could potentially lead to unauthorized file access or deletion. This risk is mitigated by assuming the user/host provides trusted environment configurations. No 'eval', hardcoded secrets, or direct network listening (beyond standard I/O for the MCP protocol) were found.