chore: regenerate .protected-files via script

chore: add CONTRIBUTING, update .gitignore, add pre-commit guard hook

UI: stabilize header/footer layout (left-aligned); remove panel borders; move brand out of search panel; add journal

feat: add schema versioning table and improve migration logic ...

- Introduced 'internal_metadata' table to track database version.
- Updated migrate_025_to_030 to use 'internal_metadata' presence as a version indicator.
- Updated 03_database_specification.md with the new table.
- Recorded in journal 20260223-0019.

feat: add database migration from v0.2.5 to v0.3.0 ...

- Implemented migrate_025_to_030 in db.rs to handle schema normalization.
- Integrated migration into init_schema.
- Data is preserved and IDs are maintained for vector consistency.
- Recorded in journal 20260223-0018.

docs: add release notes for v0.3.0

chore: bump version to 0.3.0 and create release branch ...

- Created release/v0.3.0 branch.
- Updated version to 0.3.0 in Cargo.toml, mcp.rs, tauri.conf.json, and package.json.
- Updated Cargo.lock.
- Created journal 20260223-0016.

docs: remove English translations from journals ...

- Updated 20260223-0013 and 20260223-0015 to be Japanese only.
- Standardized journal format across recent entries.

feat: add MIME type support to documents ...

- Added 'mime' column to 'documents' table in db.rs.
- Implemented automatic MIME detection in mcp.rs 'add_item_text' tool.
- Updated search and retrieval tools in mcp.rs to return 'mime' information.
- Refreshed 03_database_specification.md to reflect the new column.
- Recorded work in journal 20260223-0015.

docs: reformat bilingual documents into separate blocks ...

- Reorganized Issue-2 journal, Issue Management rules, and Development Guide.
- Separated Japanese and English descriptions into distinct blocks for better readability.
- Issue-2.md (local sync file) was also updated but is excluded from git track.

docs: renumber specifications to ensure continuous sequence ...

- Renamed 06_development_guide.md to 05_development_guide.md.
- Renamed 07_ui_design_spec.md to 06_ui_design_spec.md.
- Updated journal to reflect the changes.

docs: correct placement of development guide and update records ...

- Restored development_guide.md to docs/specification/.
- Updated journal to reflect the separation of specs and rules.

docs: relocate rules to .agent/rules and make them bilingual ...

- Moved issue management and development guide to .agent/rules.
- Added English translations to all operational rules.
- Cleaned up obsolete files in docs/.

docs: add missing journals and update sync script ...

- Added journals 0011 and 0012.
- Updated sync_issues.mjs for robust issue tracking.
- (Deleted closed issue files per cleanup rule).

feat: normalize database schema for document-chunk separation (Issue-2) ...

- Added 'documents' table for metadata.
- Refactored 'items' table for chunk storage.
- Updated MCP tools (add_item_text, search_text, etc.) to support the new schema.
- Updated technical documentation.

Docs: Separate technical specifications from project operational workflows

Docs/Chore: Establish bilingual (Japanese/English) issue policy and update dev guide

Docs: Modernize README.md with LSA architecture and new directory structure

Docs: Modernize all specification documents to align with LSA-based architecture and new directory structure

Docs/Chore: Implement manual issue closure reminder and update development guide rules

Chore: release build testing and close Issue #1

Fix: untrack docs/issues from git and add to gitignore

Feat: implement two-way issue sync tool with GitBucket

Refactor: reorganization of root and source directories and fix Error 1412

feat: add re-index button and resolve all clippy lints

feat: Remove LLM dependencies and integrate HNSW-based ANN for faster/stable search ...

- Removed llama-server, GGUF models, and heavy LLM DLLs.
- Cleaned up build.rs and tauri.conf.json to lightweight the build.
- Integrated hnsw_rs in mcp.rs for high-performance semantic search.
- Improved LSA robustness for unknown words.
- Reclaimed approx 3GB of workspace space.

feat: Lindera から Vibrato への移行による日本語形態素解析の復旧 ...

- ビルドの不安定さとネットワーク依存を解消するため Vibrato を採用
- IPADIC 辞書アセットをバイナリに埋め込み（resources/ipadic.vibrato.zst）
- JapaneseTokenizer を Vibrato ベースで再実装
- ユニットテストにより正確なわかち書きを検証済み

feat: implement 800-character document chunking and stabilize Japanese search build ...

- Implement 800-char text chunking in add_item_text.
- Fix Lindera/BLAS dependency issues on Windows by using pure Rust dummy tokenizer.
- Add unit tests for chunking logic in mcp.rs.
- Update .gitignore to include journals.
- Add implementation journal 20260219-0004.

feat: 日本語 LSA セマンティック検索の実装 (Lindera + SVD) ...

- Lindera による日本語形態素解析トークナイザーを追加
- ndarray-linalg / rsvd による LSA (潜在意味解析) コアロジックを実装
- SQLite テーブル (items_lsa) へのベクトル保存機能を追加
- MCP ツール (lsa_search, lsa_retrain) を統合
- 「軽さは正義」に基づき BM25 (FTS5) 依存を排除し、LSA に一本化

feat: add references/ and private/ folders to .gitignore and setup private tools workspace