fix: handle files in newly moved monitor directories

app/monitor.py

@@ -159,6 +159,7 @@ class LocalDirectoryWatcher:
         将 watchfiles 原始变更转换为目录监控事件。
         :param changes: watchfiles 返回的变更集合
         """
+        changes = self._expand_added_directories(changes)
         for change_type, path_str in sorted(changes, key=lambda item: item[1]):
             if change_type not in self._HANDLE_CHANGES:
                 continue
@@ -180,6 +181,30 @@ class LocalDirectoryWatcher:
             except Exception as err:
                 logger.error(f"处理本地目录监控事件失败: {path_str} - {err}")
 
+    def _expand_added_directories(self, changes: set[tuple[Change, str]]) -> set[tuple[Change, str]]:
+        """
+        将整体移入监控范围的新增目录展开为内部文件事件。
+        :param changes: watchfiles 返回的变更集合
+        :return: 包含目录内新增文件的变更集合
+        """
+        expanded_changes = set(changes)
+        for change_type, path_str in changes:
+            if change_type != Change.added:
+                continue
+            event_path = Path(path_str)
+            try:
+                if not event_path.is_dir():
+                    continue
+                for nested_path in event_path.rglob("*"):
+                    if not nested_path.is_file():
+                        continue
+                    nested_path_str = nested_path.as_posix()
+                    if self._watch_filter(Change.added, nested_path_str):
+                        expanded_changes.add((Change.added, nested_path_str))
+            except OSError as err:
+                logger.debug(f"扫描新增目录失败: {event_path} - {err}")
+        return expanded_changes
+
     @staticmethod
     def _build_event(change_type: Change, event_path: Path) -> Optional[DirectoryChangeEvent]:
         """

tests/test_monitor_watchfiles.py

@@ -86,6 +86,36 @@ def test_handle_changes_skips_missing_paths(tmp_path):
     assert callback.events == []
 
 
+def test_handle_changes_expands_added_directory_files(tmp_path):
+    """
+    整体移入的新增目录应递归转换成内部文件事件且不重复分发。
+    """
+    added_dir = tmp_path / "task"
+    nested_dir = added_dir / "season"
+    nested_dir.mkdir(parents=True)
+    movie_file = added_dir / "movie.mkv"
+    episode_file = nested_dir / "episode.mkv"
+    ignored_file = added_dir / ".DS_Store"
+    movie_file.write_bytes(b"movie")
+    episode_file.write_bytes(b"episode")
+    ignored_file.write_bytes(b"ignored")
+
+    callback = CallbackRecorder()
+    watcher = LocalDirectoryWatcher(tmp_path, callback=callback, force_polling=False)
+    watcher._handle_changes({
+        (Change.added, added_dir.as_posix()),
+        (Change.added, movie_file.as_posix()),
+    })
+
+    assert [
+        (event.change_type, event_path, file_size)
+        for event, _, event_path, file_size in callback.events
+    ] == [
+        (Change.added, movie_file.as_posix(), 5),
+        (Change.added, episode_file.as_posix(), 7),
+    ]
+
+
 def test_event_handler_routes_file_events_to_transfer_handler():
     """
     文件事件应继续按 local 存储交给整理流程。