fix: Only trigger Immich scan on file events

Co-authored-by: aider (gemini/gemini-2.5-pro) <aider@aider.chat>

main.py

@@ -57,6 +57,7 @@ def main():
             while True:
                 events = inotify.read(timeout=1000)
                 if events:
+                    scan_needed = False
                     for event in events:
                         logging.debug(f"Event: {event!r}")
                         if event.mask & flags.IGNORED:
@@ -76,6 +77,9 @@ def main():
                             add_watch_recursive(inotify, new_dir_path, watch_flags, wd_to_path)
                             continue
 
+                        scan_needed = True
+
+                    if scan_needed:
                         if timer:
                             timer.cancel()
                             logging.info('Debounce cancelled timer.')