feat: TkProgressTqdm leitet tqdm-Fortschritt an Queue weiter

tests/test_download_progress.py

@@ -0,0 +1,48 @@
+import queue
+from unittest.mock import MagicMock, patch
+
+import tqdm as tqdm_module
+
+from whisper_local.tray._download_progress import TkProgressTqdm
+
+
+class TestTkProgressTqdm:
+    def test_update_puts_message_in_queue(self):
+        q = queue.Queue()
+        TkProgressTqdm._queue = q
+
+        bar = TkProgressTqdm(total=1000, desc="model.bin", disable=True)
+        bar.update(300)
+        bar.close()
+
+        TkProgressTqdm._queue = None
+
+        msg = q.get_nowait()
+        assert msg["file"] == "model.bin"
+        assert msg["n"] == 300
+        assert msg["total"] == 1000
+
+    def test_update_without_queue_does_not_raise(self):
+        TkProgressTqdm._queue = None
+        bar = TkProgressTqdm(total=100, desc="test.bin", disable=True)
+        bar.update(50)  # darf nicht crashen
+        bar.close()
+
+    def test_multiple_updates_accumulate(self):
+        q = queue.Queue()
+        TkProgressTqdm._queue = q
+
+        bar = TkProgressTqdm(total=1000, desc="file.bin", disable=True)
+        bar.update(200)
+        bar.update(300)
+        bar.close()
+
+        TkProgressTqdm._queue = None
+
+        msgs = []
+        while not q.empty():
+            msgs.append(q.get_nowait())
+
+        assert len(msgs) == 2
+        assert msgs[0]["n"] == 200
+        assert msgs[1]["n"] == 500  # tqdm akkumuliert: 200+300