feat: add Playwright MCP integration and TTS improvements

- Integrate Playwright MCP for browser automation capabilities
- Add TTS manager for improved audio synthesis management
- Add ToolCallCard UI component for better tool call visualization
- Upgrade Vite to v7.1.10 for improved build performance
- Add lucide-react for icon components
- Add dotenv for environment variable management
- Update agent prompt and orchestrator for enhanced interactions
- Improve audio playback and voice controls in UI

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

packages/voice-assistant/package.json

@@ -9,7 +9,10 @@
     "build:server": "tsc -p tsconfig.server.json",
     "build": "npm run build:ui && npm run build:server",
     "start": "NODE_ENV=production node dist/server/index.js",
-    "typecheck": "tsc --noEmit && tsc -p tsconfig.server.json --noEmit"
+    "typecheck": "tsc --noEmit && tsc -p tsconfig.server.json --noEmit",
+    "test:e2e": "playwright test",
+    "test:e2e:ui": "playwright test --ui",
+    "test:e2e:mobile": "playwright test --project='Mobile Chrome'"
   },
   "dependencies": {
     "@ai-sdk/openai": "^2.0.52",
@@ -18,6 +21,7 @@
     "ai": "^5.0.76",
     "dotenv": "^17.2.3",
     "express": "^4.18.2",
+    "lucide-react": "^0.546.0",
     "openai": "^4.20.0",
     "tiny-invariant": "^1.3.3",
     "uuid": "^9.0.1",
@@ -25,6 +29,7 @@
     "zod": "^3.23.8"
   },
   "devDependencies": {
+    "@playwright/test": "^1.56.1",
     "@types/express": "^4.17.20",
     "@types/node": "^20.9.0",
     "@types/react": "^18.2.37",