Fix 403 error (CORS) and change default mode to Hand Tracking

Dockerfile

@@ -24,4 +24,4 @@ COPY . .
 EXPOSE 7860
 
 # Run the application
-CMD ["streamlit", "run", "app.py", "--server.port", "7860", "--server.address", "0.0.0.0"]
+CMD ["streamlit", "run", "app.py", "--server.port", "7860", "--server.address", "0.0.0.0", "--server.enableCORS", "false", "--server.enableXsrfProtection", "false"]

app.py

@@ -133,7 +133,7 @@ with st.sidebar:
     mode_label = st.selectbox(
         "Detection Mode",
         options=[m.value for m in DetectionMode],
-        index=1,
+        index=0,
         help="Choose what the detector should look for.",
     )
     mode = DetectionMode(mode_label)
@@ -291,6 +291,10 @@ with tab_webcam:
         "Take a photo with your webcam and the detector will process it instantly."
     )
 
+    if mode == DetectionMode.MOTION_DETECTION:
+        st.warning("⚠️ **Motion Detection** requires a video stream to compare frames. For a single photo, use **Hand Tracking** or **Combined** mode.")
+
+
     camera_input = st.camera_input("📷 Take a photo")
 
     if camera_input is not None: