fix(anime): download + title 없을 때 batch_download로 처리

- action=download, title='' → filter에 sub 포함시 sub_only, 아니면 auto
- video_only도 title 없을 때 batch 처리 추가

handlers/anime_handler.py

@@ -91,19 +91,27 @@ async def handle_anime_message(
                 mode = parsed.get("download_mode", "auto")
                 episode = parsed.get("episode")
                 result = await pipeline.download(title, mode=mode, episode=episode)
+            elif action == "download" and not title:
+                # 이번 분기 전체 다운로드 (자막 최신화 등)
+                dl_filter = parsed.get("filter", "")
+                if "sub" in dl_filter:
+                    result = await pipeline.batch_download(mode="sub_only")
+                else:
+                    result = await pipeline.batch_download(mode="auto")
             elif action == "sub_only":
                 # 자막만 다운로드
                 episode = parsed.get("episode")
                 if title:
                     result = await pipeline.download(title, mode="sub_only", episode=episode)
                 else:
-                    # 전체 자막 최신화
                     result = await pipeline.batch_download(mode="sub_only")
-            elif action == "video_only" and title:
+            elif action == "video_only":
                 # 영상만 다운로드
                 episode = parsed.get("episode")
+                if title:
                     result = await pipeline.download(title, mode="video_only", episode=episode)
-
+                else:
+                    result = await pipeline.batch_download(mode="video_only")
             elif action == "status":
                 status = await pipeline.get_status()
                 if not status: