Riduce falsi positivi del watchdog

tests/test_registry.py

@@ -24,3 +24,27 @@ def test_mark_ignored_removes_from_pending_queue(tmp_path: Path) -> None:
     registry.mark_ignored(path)
 
     assert registry.pending_count() == 0
+
+
+def test_snapshot_change_detection(tmp_path: Path) -> None:
+    registry = ChangeRegistry(tmp_path / "changes.sqlite")
+    path = str(tmp_path / "image.jpg")
+
+    assert registry.has_snapshot_changed(path, 100, 123)
+
+    registry.update_snapshot(path, 100, 123)
+
+    assert not registry.has_snapshot_changed(path, 100, 123)
+    assert registry.has_snapshot_changed(path, 101, 123)
+    assert registry.has_snapshot_changed(path, 100, 124)
+
+
+def test_record_stores_snapshot_and_mtime(tmp_path: Path) -> None:
+    registry = ChangeRegistry(tmp_path / "changes.sqlite")
+    path = str(tmp_path / "image.jpg")
+
+    registry.record(ChangeEvent(path=path, event_type="modified", size=100, mtime_ns=123))
+
+    pending = registry.list_pending()
+    assert pending == [ChangeEvent(path=path, event_type="modified", size=100, mtime_ns=123)]
+    assert not registry.has_snapshot_changed(path, 100, 123)