Add deployment documentation and enhance project setup scripts

- Introduced `DEPLOYMENT.md` for comprehensive deployment instructions.
- Added `start.bat` and `start.sh` scripts for unified project startup on Windows and Linux/Mac.
- Updated `.gitignore` to exclude additional files and directories.
- Enhanced `main.py` to serve static frontend files and handle SPA routing.
- Configured Vite to output the frontend build to the backend public directory.
- Minor adjustments in `ReviewDetail.tsx` for improved data handling.

backend/app/main.py

@@ -2,8 +2,11 @@
 
 from fastapi import FastAPI, WebSocket, WebSocketDisconnect
 from fastapi.middleware.cors import CORSMiddleware
+from fastapi.staticfiles import StaticFiles
+from fastapi.responses import FileResponse
 from contextlib import asynccontextmanager
 from typing import List
+from pathlib import Path
 import json
 
 from app.config import settings
@@ -67,15 +70,39 @@ app.add_middleware(
 # Include API routes
 app.include_router(api_router, prefix="/api")
 
-
-@app.get("/")
-async def root():
-    """Root endpoint"""
-    return {
-        "message": "AI Code Review Agent API",
-        "version": "0.1.0",
-        "docs": "/docs"
-    }
+# Serve static files (frontend build)
+public_dir = Path(__file__).parent.parent / "public"
+if public_dir.exists():
+    # Serve assets (JS, CSS, images)
+    app.mount("/assets", StaticFiles(directory=str(public_dir / "assets")), name="assets")
+    
+    @app.get("/", response_class=FileResponse)
+    async def serve_frontend_root():
+        """Serve frontend index.html"""
+        return FileResponse(str(public_dir / "index.html"))
+    
+    @app.get("/{full_path:path}", response_class=FileResponse)
+    async def serve_frontend_routes(full_path: str):
+        """Serve frontend for all routes (SPA support)"""
+        # Skip API and WebSocket routes
+        if full_path.startswith(("api/", "ws/", "docs", "redoc", "openapi.json")):
+            return None
+        
+        file_path = public_dir / full_path
+        if file_path.exists() and file_path.is_file():
+            return FileResponse(str(file_path))
+        # Fallback to index.html for SPA routing
+        return FileResponse(str(public_dir / "index.html"))
+else:
+    @app.get("/")
+    async def root():
+        """Root endpoint (when frontend not built)"""
+        return {
+            "message": "AI Code Review Agent API",
+            "version": "0.1.0",
+            "docs": "/docs",
+            "note": "Frontend not built. Run 'npm run build' in frontend directory."
+        }
 
 
 @app.get("/health")