Update Dockerfile

Dockerfile

@@ -26,6 +26,8 @@ RUN pip install --no-cache-dir -r requirements.txt
 # Copy app + static frontend files
 COPY app.py .
 COPY static/ ./static/
+# Copy model checkpoint (uploaded separately to HF Space repo)
+COPY best_model.pth .
 
 # HF Spaces requires port 7860
 EXPOSE 7860