Fix: Load series from DB on startup and save missing episodes when adding series

src/server/api/anime.py

@@ -868,6 +868,25 @@ async def add_series(
                 if hasattr(series_app, "list") and hasattr(series_app.list, "keyDict"):
                     if key in series_app.list.keyDict:
                         series_app.list.keyDict[key].episodeDict = missing_episodes
+                
+                # Save missing episodes to database
+                if db is not None and missing_episodes:
+                    from src.server.database.service import EpisodeService
+                    
+                    for season, episode_numbers in missing_episodes.items():
+                        for episode_number in episode_numbers:
+                            await EpisodeService.create(
+                                db=db,
+                                series_id=db_id,
+                                season=season,
+                                episode_number=episode_number,
+                            )
+                    
+                    logger.info(
+                        "Saved %d missing episodes to database for %s",
+                        sum(len(eps) for eps in missing_episodes.values()),
+                        key
+                    )
             else:
                 # Scanner not available - this shouldn't happen in normal operation
                 logger.warning(