feat(telegram): add voice transcription model override (#98)

tests/test_telegram_backend.py

@@ -133,6 +133,7 @@ def test_telegram_backend_build_and_run_wires_config(
         chat_id=321,
         voice_transcription=True,
         voice_max_bytes=1234,
+        voice_transcription_model="whisper-1",
         files=TelegramFilesSettings(enabled=True, allowed_user_ids=[1, 2]),
         topics=TelegramTopicsSettings(enabled=True, scope="main"),
     )
@@ -150,6 +151,7 @@ def test_telegram_backend_build_and_run_wires_config(
     assert cfg.chat_id == 321
     assert cfg.voice_transcription is True
     assert cfg.voice_max_bytes == 1234
+    assert cfg.voice_transcription_model == "whisper-1"
     assert cfg.files.enabled is True
     assert cfg.files.allowed_user_ids == [1, 2]
     assert cfg.topics.enabled is True

tests/test_telegram_voice.py

@@ -188,6 +188,7 @@ async def test_transcribe_voice_handles_missing_file() -> None:
         bot=bot,
         msg=_voice_message(),
         enabled=True,
+        model="whisper-1",
         reply=reply,
     )
 
@@ -207,6 +208,7 @@ async def test_transcribe_voice_handles_missing_download() -> None:
         bot=bot,
         msg=_voice_message(),
         enabled=True,
+        model="whisper-1",
         reply=reply,
     )
 
@@ -235,6 +237,7 @@ async def test_transcribe_voice_rejects_large_voice_without_downloading() -> Non
         bot=bot,
         msg=_voice_message(file_size=10_000),
         enabled=True,
+        model="whisper-1",
         max_bytes=100,
         reply=reply,
     )