Add debug output to see GLM API response

app.py

@@ -307,7 +307,9 @@ Find as many text regions as possible. Do not skip any visible text."""
             
             return detections, f"Found {len(detections)} text regions"
         else:
-            return [], "No text regions detected"
+            # Return debug info when no detections
+            debug_info = f"No text detected.\n\nDEBUG - API Response ({len(result_text)} chars):\n{result_text[:1000] if result_text else 'EMPTY RESPONSE'}"
+            return [], debug_info
             
     except Exception as e:
         return None, f"Error: {str(e)}"
@@ -477,7 +479,7 @@ def translate_manga(image, source_lang, target_lang, show_boxes, apply_inpaint,
         return None, None, status
     
     if len(detections) == 0:
-        return image, image, "No text detected in the image"
+        return image, image, status  # status contains debug info
     
     # Step 2: Create visualization
     progress(0.5, desc="🎨 Creating visualization...")