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

whisper_local/tray/_download_progress.py

@@ -0,0 +1,32 @@
+"""Download-Fortschrittsdialog für den ersten Whisper-Modell-Download (Windows)."""
+
+from __future__ import annotations
+
+import queue
+import sys
+import threading
+from typing import Any
+
+import tqdm as tqdm_module
+
+
+class TkProgressTqdm(tqdm_module.tqdm):
+    """tqdm-Ersatz, der Fortschritts-Updates thread-safe in eine Queue schreibt."""
+
+    _queue: queue.Queue | None = None
+
+    def __init__(self, *args: Any, **kwargs: Any) -> None:
+        self._desc = kwargs.get("desc", "")
+        self._accumulated_n = 0
+        super().__init__(*args, **kwargs)
+
+    def update(self, n: int = 1) -> bool | None:
+        self._accumulated_n += n
+        result = super().update(n)
+        if self._queue is not None:
+            self._queue.put({
+                "file": self._desc,
+                "n": self._accumulated_n,
+                "total": self.total or 0,
+            })
+        return result