feat: MetonaAI Desktop 初始项目

- Electron + React + TypeScript 架构
- 三栏布局: Sidebar | ChatPanel | DetailPanel
- 9 个内置工具 (文件系统/网络/记忆/命令)
- SQLite 持久化 (better-sqlite3)
- MUI 暗色/亮色主题系统
- Agent Loop ReAct 状态机引擎
- DeepSeek / Agnes AI / Ollama Provider 适配器
- MCP 协议集成
- 系统托盘 + 全局快捷键
- Tailwind CSS v4 + Tailwind Merge
- 修复: Sidebar 缺失 TextField 导入导致黑屏

.gitignore

@@ -0,0 +1,64 @@
+# Dependencies
+node_modules/
+.pnp/
+.pnp.js
+
+# Build outputs
+dist/
+dist-electron/
+out/
+build/
+*.tsbuildinfo
+
+# Vite
+.vite/
+
+# Electron
+release/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+desktop.ini
+
+# Environment
+.env
+.env.local
+.env.*.local
+
+# Logs
+logs/
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Test coverage
+coverage/
+.nyc_output/
+
+# Playwright
+test-results/
+playwright-report/
+
+# SQLite databases (workspace-local)
+*.db
+*.db-journal
+
+# Metona workspace (local runtime data)
+MetonaWorkspaces/
+
+# TypeScript
+*.tsbuildinfo
+
+# Misc
+.cache/
+.temp/
+tmp/