fix percentage

src/core/SeriesApp.py

@@ -245,6 +245,8 @@ class SeriesApp:
             # event-driven progress reporting with the legacy callback API that
             # the CLI still relies on.
             def wrapped_callback(progress_info):
+                logger.debug(f"wrapped_callback called with: {progress_info}")
+                
                 if self._is_cancelled():
                     raise InterruptedError("Download cancelled by user")
                 
@@ -267,6 +269,11 @@ class SeriesApp:
                     speed = progress_info.get('speed', 0)  # bytes/sec
                     eta = progress_info.get('eta')  # seconds
                     
+                    logger.debug(
+                        f"Progress calculation: {downloaded}/{total_bytes} = "
+                        f"{progress:.1f}%, speed={speed}, eta={eta}"
+                    )
+                    
                     # Convert to expected format for web API callback
                     # Web API expects: percent, downloaded_mb, total_mb,
                     # speed_mbps, eta_seconds
@@ -295,6 +302,7 @@ class SeriesApp:
                         'speed_mbps': None,
                         'eta_seconds': None,
                     }
+                    logger.debug(f"Old-style progress: {progress}%")
                 
                 # Notify progress via new callback system
                 self._callback_manager.notify_progress(
@@ -317,6 +325,7 @@ class SeriesApp:
                 # Call callback with web API format
                 # (dict with detailed progress info)
                 if callback:
+                    logger.debug(f"Calling progress callback: {web_progress_dict}")
                     callback(web_progress_dict)
                 
                 # Propagate progress into the legacy callback chain so