test: port voice-reply suffix assertions, fix change-detector cap test, add AUTHOR_MAP entry

- Add output_path suffix assertions (.ogg Telegram / .mp3 non-Telegram) to
  _send_voice_reply tests, covering the OGG voice-note path that landed on
  main in ae82eed2b (the PR's third commit was redundant with it).
- Convert test_gemini_default_is_32000 back to an invariant against
  PROVIDER_MAX_TEXT_LENGTH instead of a hardcoded literal.
- Map barronlroth@gmail.com -> barronlroth in scripts/release.py.

tests/gateway/test_voice_command.py

@@ -415,14 +415,17 @@ class TestSendVoiceReply:
 
     @pytest.mark.asyncio
     async def test_calls_tts_and_send_voice(self, runner):
+        from gateway.config import Platform
+
         mock_adapter = AsyncMock()
         mock_adapter.send_voice = AsyncMock()
         event = _make_event()
+        event.source.platform = Platform.TELEGRAM
         runner.adapters[event.source.platform] = mock_adapter
 
         tts_result = json.dumps({"success": True, "file_path": "/tmp/test.ogg"})
 
-        with patch("tools.tts_tool.text_to_speech_tool", return_value=tts_result), \
+        with patch("tools.tts_tool.text_to_speech_tool", return_value=tts_result) as mock_tts, \
              patch("tools.tts_tool._strip_markdown_for_tts", side_effect=lambda t: t), \
              patch("os.path.isfile", return_value=True), \
              patch("os.unlink"), \
@@ -430,9 +433,32 @@ class TestSendVoiceReply:
             await runner._send_voice_reply(event, "Hello world")
 
         mock_adapter.send_voice.assert_called_once()
+        assert mock_tts.call_args.kwargs["output_path"].endswith(".ogg")
         call_args = mock_adapter.send_voice.call_args
         assert call_args.kwargs.get("chat_id") == "123"
 
+    @pytest.mark.asyncio
+    async def test_non_telegram_auto_voice_reply_uses_mp3(self, runner):
+        from gateway.config import Platform
+
+        mock_adapter = AsyncMock()
+        mock_adapter.send_voice = AsyncMock()
+        event = _make_event()
+        event.source.platform = Platform.SLACK
+        runner.adapters[event.source.platform] = mock_adapter
+
+        tts_result = json.dumps({"success": True, "file_path": "/tmp/test.mp3"})
+
+        with patch("tools.tts_tool.text_to_speech_tool", return_value=tts_result) as mock_tts, \
+             patch("tools.tts_tool._strip_markdown_for_tts", side_effect=lambda t: t), \
+             patch("os.path.isfile", return_value=True), \
+             patch("os.unlink"), \
+             patch("os.makedirs"):
+            await runner._send_voice_reply(event, "Hello world")
+
+        mock_adapter.send_voice.assert_called_once()
+        assert mock_tts.call_args.kwargs["output_path"].endswith(".mp3")
+
     @pytest.mark.asyncio
     async def test_auto_voice_reply_uses_thread_metadata_helper(self, runner):
         from gateway.config import Platform

tests/tools/test_tts_max_text_length.py

@@ -31,8 +31,8 @@ class TestResolveMaxTextLength:
     def test_mistral_default(self):
         assert _resolve_max_text_length("mistral", {}) == PROVIDER_MAX_TEXT_LENGTH["mistral"]
 
-    def test_gemini_default_is_32000(self):
-        assert _resolve_max_text_length("gemini", {}) == 32000
+    def test_gemini_default(self):
+        assert _resolve_max_text_length("gemini", {}) == PROVIDER_MAX_TEXT_LENGTH["gemini"]
 
     def test_unknown_provider_falls_back(self):
         assert _resolve_max_text_length("does-not-exist", {}) == FALLBACK_MAX_TEXT_LENGTH