Changing streamlit warning in Backend optional;

api_server.py

@@ -279,17 +279,44 @@ def serialize_for_api(results: Dict) -> Dict:
     return serialized
 
 def run_streamlit():
-    """Run Streamlit in a separate thread"""
-    subprocess.run([
-        "streamlit", "run", "app_enhanced.py", 
-        "--server.port=8502", 
-        "--server.address=0.0.0.0"
-    ])
+    """Run Streamlit in a separate thread (optional - only if app file exists)"""
+    import logging
+    logger = logging.getLogger(__name__)
+    
+    # Check if streamlit app exists
+    streamlit_files = ["frontend_light.py", "app_enhanced.py", "app.py"]
+    streamlit_app = None
+    
+    for file in streamlit_files:
+        if os.path.exists(file):
+            streamlit_app = file
+            break
+    
+    if streamlit_app:
+        logger.info(f"Starting Streamlit UI with {streamlit_app}")
+        subprocess.run([
+            "streamlit", "run", streamlit_app, 
+            "--server.port=8502", 
+            "--server.address=0.0.0.0"
+        ])
+    else:
+        logger.info("No Streamlit app found. Running FastAPI only (API-only mode)")
 
 if __name__ == "__main__":
-    # Start Streamlit in background
-    streamlit_thread = Thread(target=run_streamlit, daemon=True)
-    streamlit_thread.start()
+    import logging
+    logging.basicConfig(level=logging.INFO)
+    logger = logging.getLogger(__name__)
+    
+    # Try to start Streamlit in background (optional)
+    streamlit_available = any(os.path.exists(f) for f in ["frontend_light.py", "app_enhanced.py", "app.py"])
+    
+    if streamlit_available:
+        logger.info("🎨 Starting Streamlit UI in background...")
+        streamlit_thread = Thread(target=run_streamlit, daemon=True)
+        streamlit_thread.start()
+    else:
+        logger.info("📡 Running in API-only mode (no Streamlit UI)")
     
     # Start FastAPI
+    logger.info("🚀 Starting FastAPI server on http://0.0.0.0:7860")
     uvicorn.run(app, host="0.0.0.0", port=7860)