feat: Complete dashboard integration and full system testing

✅ Frontend-Backend Integration
- Created API service layer (frontend/src/services/api.ts)
- Updated ChatInterface component to use real API endpoints
- Added project management (download, delete) functionality
- Implemented proper error handling and loading states

✅ FastAPI Backend Enhancements
- Fixed user_id field in project metadata
- Added comprehensive API endpoints for chat, generation, and projects
- Implemented WebSocket support for real-time chat
- Fixed project listing and download functionality

✅ Mock Mode Implementation
- Added intelligent mock responses for testing
- Smart parsing of BPM, genre, and key from user input
- Realistic project configurations based on user requests
- Works without API keys (currently enabled)

✅ System Testing
- Tested complete flow: chat → generation → download
- Verified ALS file generation and format
- Validated all API endpoints
- Created comprehensive TESTING_REPORT.md
- Created QUICK_START.md guide

✅ Bug Fixes
- Fixed BPM extraction regex in mock mode
- Fixed project metadata user_id inclusion
- Resolved TypeScript compilation errors
- Fixed import syntax for type-only imports

📊 Test Results:
- Chat API: ✅ Working (mock responses)
- Project Generation: ✅ Working (creates valid ALS)
- Download: ✅ Working (818 byte ALS files)
- Project Listing: ✅ Working (filters by user_id)
- ALS Files: ✅ Valid XML/gzip format

🔧 Current Status:
- MOCK_MODE=true (full functionality without API keys)
- GLM4.6: Insufficient balance
- Minimax M2: Endpoint 404
- Ready for production after API fixes

🤖 Features:
- Multi-genre support (House, Techno, Hip-Hop, etc.)
- Automatic BPM/key detection
- Complete Ableton Live project structure
- Project history and management

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

frontend/package.json

@@ -0,0 +1,36 @@
+{
+  "name": "frontend",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "lint": "eslint .",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "@tailwindcss/forms": "^0.5.10",
+    "autoprefixer": "^10.4.22",
+    "axios": "^1.13.2",
+    "lucide-react": "^0.555.0",
+    "postcss": "^8.5.6",
+    "react": "^19.2.0",
+    "react-dom": "^19.2.0",
+    "tailwindcss": "^4.1.17"
+  },
+  "devDependencies": {
+    "@eslint/js": "^9.39.1",
+    "@types/node": "^24.10.1",
+    "@types/react": "^19.2.5",
+    "@types/react-dom": "^19.2.3",
+    "@vitejs/plugin-react": "^5.1.1",
+    "eslint": "^9.39.1",
+    "eslint-plugin-react-hooks": "^7.0.1",
+    "eslint-plugin-react-refresh": "^0.4.24",
+    "globals": "^16.5.0",
+    "typescript": "~5.9.3",
+    "typescript-eslint": "^8.46.4",
+    "vite": "^7.2.4"
+  }
+}