call back logs

src/core/SeriesApp.py

@@ -326,7 +326,14 @@ class SeriesApp:
                 # (dict with detailed progress info)
                 if callback:
                     logger.debug(f"Calling progress callback: {web_progress_dict}")
-                    callback(web_progress_dict)
+                    try:
+                        callback(web_progress_dict)
+                        logger.debug("Progress callback executed successfully")
+                    except Exception as e:
+                        logger.error(
+                            f"Error in progress callback: {e}",
+                            exc_info=True
+                        )
                 
                 # Propagate progress into the legacy callback chain so
                 # existing UI surfaces continue to receive updates without