fix(node): drop a directory moved out of the root on Windows too

On Windows watchdog cannot tell what a deleted path was -- it is gone -- and
reports a directory moved out of the root as a file deleted, so the fix in
3d5a168 never ran there and test_the_watcher_reports_a_directory_moved_out
failed. A deleted path the index still holds entries below was a directory.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2 files changed, 19 insertions, 0 deletions

diff --git a/packages/meshbay-node/src/meshbay_node/indexer/indexer.py b/packages/meshbay-node/src/meshbay_node/indexer/indexer.py
index 732b499..f06d30f 100644
--- a/packages/meshbay-node/src/meshbay_node/indexer/indexer.py
+++ b/packages/meshbay-node/src/meshbay_node/indexer/indexer.py
@@ -1274,6 +1274,12 @@ class DirectoryIndexer:
             if not root.available:
                 return
 
+            # On Windows watchdog cannot tell what a deleted path was -- it is
+            # gone -- and reports a directory moved out as a *file* deleted.
+            # A path the index still holds entries below was a directory.
+            if not directory and deleted and self._entries_in_dir(root, file_path):
+                directory = True
+
             if directory:
                 if file_path == root.path or not await off_disk(
                         self.roots, self._dir_left_the_root, file_path):
diff --git a/packages/meshbay-node/tests/test_root_availability.py b/packages/meshbay-node/tests/test_root_availability.py
index e92ec95..7cc890f 100644
--- a/packages/meshbay-node/tests/test_root_availability.py
+++ b/packages/meshbay-node/tests/test_root_availability.py
@@ -337,6 +337,19 @@ async def test_a_directory_moved_out_of_a_live_root_is_removed(tmp_path):
     assert _names(idx) == {"e1.hd.mkv"}
 
 
+async def test_a_directory_reported_as_a_deleted_file_is_removed(tmp_path):
+    """What watchdog emits on Windows: the path is gone, so it cannot say it
+    was a directory, and a move out of the root arrives as a file deleted."""
+    shows = tmp_path / "Shows"
+    season = _season(shows, "S1", "e1.mp4", "e2.mp4")
+    _season(shows, "S2", "e3.mp4")
+    idx = await _indexer(_roots(shows))
+
+    os.rename(season, tmp_path / "S1")
+    await idx._update_entry(season, deleted=True, directory=False)
+    assert _names(idx) == {"e3.mp4"}
+
+
 async def test_a_directory_event_from_a_vanished_root_freezes(tmp_path):
     shows = tmp_path / "Shows"
     season = _season(shows, "S1", "e1.mp4", "e2.mp4")