docs: journal集約・整理 (Week 006-008) および README修正

chore: .gitignoreに従いjournalsフォルダをインデックスから除外

feat: MCPプロトコル完全準拠(SSE/非同期レスポンス対応) & ビルド環境・DLL競合の解消

サイドカー自動起動・監視、llama_server状態API、UI連携、ESLint/Prettier整備、journal追加

docs: detail specific DLL conflict path in troubleshooting journal and clean up build.rs logic

feat: implement hermetic build to fix 0xc0000139 by aggregating DLLs and using bundled sqlite

style(journals): fix markdown lint errors in 20260212 log

refactor(journals): mask absolute paths and update environment docs

docs: add journal and update README

docs: finalize journals for Feb 6th and start Feb 7th

Add comprehensive test suite (35 tests) and update journal ...

- Create test/ folder with 5 test modules (35 tests total)
  * db.test.js: Database operations (5 tests)
  * mcp-tools.test.js: Tool definitions (11 tests)
  * mcp-handlers.test.js: Handler implementation (6 tests)
  * llama-client.test.js: LLama API integration (9 tests)
  * integration.test.js: End-to-end workflows (4 tests)
- Add test/setup.js: Shared test utilities
- Add test/README.md: Test documentation
- Update package.json: Add test scripts (7 variants)
- Update journals/20260206-0000-案件.md: Document test implementation
- All 35 tests passing (139 expect calls)