Fix backend URL for Hugging Face deployment, improve startup health check

startup.sh

@@ -1,13 +1,23 @@
 #!/bin/bash
 set -e
 
+# Export environment variables for the app
+export BACKEND_URL="http://127.0.0.1:8000"
+
 echo "Starting FastAPI backend on port 8000..."
 uvicorn app.api:app --host 0.0.0.0 --port 8000 &
 BACKEND_PID=$!
 
-# Wait for backend to be ready
+# Wait for backend to be ready with health check
 echo "Waiting for backend to start..."
-sleep 10
+for i in {1..30}; do
+    if curl -s http://127.0.0.1:8000/health > /dev/null 2>&1; then
+        echo "Backend is healthy!"
+        break
+    fi
+    echo "Waiting... ($i/30)"
+    sleep 2
+done
 
 # Check if backend is running
 if ! kill -0 $BACKEND_PID 2>/dev/null; then

streamlit_app.py

@@ -38,8 +38,8 @@ if "product_ideas" not in st.session_state:
 # =====================================
 # CONFIGURATION
 # =====================================
-# Use environment variable for Azure deployment, fallback to localhost for local dev
-API_URL = os.getenv("BACKEND_URL", "http://localhost:8000")
+# For Hugging Face Spaces - backend runs internally on same container
+API_URL = os.getenv("BACKEND_URL", "http://127.0.0.1:8000")
 WORKSPACE = "default"
 
 # MODE MAPPING - All 8 modes with correct backend endpoints