build: Improve build efficiency and add dev mode

- Remove duplicate webui build in vscode-ide-companion (fixes double build)
- Fix misleading [watch] log messages in esbuild.js (only show in watch mode)
- Update vite-plugin-dts to ^4.5.4 for TypeScript 5.8+ support
- Update baseline-browser-mapping to ^2.9.19 to silence outdated data warnings
- Fix vitest config to use @qwen-code/qwen-code-core instead of old gemini-cli-core
- Add resolve.alias in cli vitest.config.ts for source-based testing
- Add npm run dev script for running from TypeScript source without build

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

packages/webui/package.json

@@ -56,7 +56,7 @@
     "tailwindcss": "^3.4.0",
     "typescript": "^5.0.0",
     "vite": "^5.0.0",
-    "vite-plugin-dts": "^3.7.0",
+    "vite-plugin-dts": "^4.5.4",
     "storybook": "^10.1.11",
     "@storybook/react-vite": "^10.1.11",
     "@chromatic-com/storybook": "^5.0.0",