Fix HF Spaces startup - use port 7860 and simplify startup logic

app.py

@@ -148,36 +148,25 @@ if __name__ == "__main__":
     signal.signal(signal.SIGINT, cleanup_handler)
     signal.signal(signal.SIGTERM, cleanup_handler)
     
-    print("🚀 Starting Edge LLM with auto-build frontend...")
+    print("🚀 Starting Edge LLM...")
     
-    # Find available port  
-    import os
-    original_port = int(os.getenv("PORT", "0"))  # Use env var or auto-assign
-    if original_port == 0:
-        # Auto-assign a free port starting from 8000
-        original_port = find_free_port(8000)
-        print(f"🔍 Auto-assigned port: {original_port}")
-    else:
-        kill_processes_on_port(original_port)
+    # Use HF Spaces default port (7860) or environment variable
+    port = int(os.getenv("PORT", "7860"))
+    print(f"📡 Using port: {port}")
     
-    try:
-        port = find_free_port(original_port)
-        print(f"📡 Using port: {port}")
-        
-        if port != original_port:
-            print(f"⚠️ Port {original_port} was busy, switched to {port}")
-            update_frontend_config(port)
+    # For Hugging Face Spaces, skip complex port logic and auto-build
+    is_hf_space = os.getenv("SPACE_ID") is not None
+    
+    if not is_hf_space:
+        # Local development: kill existing processes and auto-build
+        kill_processes_on_port(port)
         
         # Auto-build frontend if needed
         if should_rebuild_frontend():
             print("🔨 Building frontend...")
             build_frontend()
         
-        # Start the backend server
-        print(f"🌐 Starting server on http://localhost:{port}")
-        print("🎯 Frontend and Backend integrated - ready to use!")
-        
-        # Auto-open browser after a short delay
+        # Auto-open browser for local development
         def open_browser():
             time.sleep(2)
             webbrowser.open(f'http://localhost:{port}')
@@ -186,6 +175,11 @@ if __name__ == "__main__":
         browser_thread = threading.Thread(target=open_browser)
         browser_thread.daemon = True
         browser_thread.start()
+    
+    try:
+        # Start the backend server
+        print(f"🌐 Starting server on http://{'0.0.0.0' if is_hf_space else 'localhost'}:{port}")
+        print("🎯 Frontend and Backend integrated - ready to use!")
         
         # Start the server
         uvicorn.run(app, host="0.0.0.0", port=port)

backend/config.py

@@ -59,6 +59,6 @@ CORS_ORIGINS = ["*"]  # Allow all origins for HF Space
 FRONTEND_DIST_DIR = "static"
 ASSETS_DIR = "static/assets"
 
-# Server settings (port will be dynamically determined)
+# Server settings
 HOST = "0.0.0.0"
-DEFAULT_PORT = int(os.getenv("PORT", "0"))  # 0 means auto-assign a free port
+DEFAULT_PORT = int(os.getenv("PORT", "7860"))  # Use HF Spaces default port 7860