feat: add chunked meeting transcription and logging

voice.py

@@ -1,10 +1,13 @@
 from __future__ import annotations
 
+import logging
 from pathlib import Path
 from typing import Callable
 
 from discord.ext import voice_recv
 
+logger = logging.getLogger(__name__)
+
 
 class MeetingRecorder:
     """Wrapper around discord-ext-voice-recv's listen/stop_listening API."""
@@ -23,11 +26,14 @@ class MeetingRecorder:
         self.sink = voice_recv.WaveSink(self.output_path)
         self.vc.listen(self.sink, after=after_callback)
         self.recording = True
+        logger.info("Voice receive started: output_path=%s", self.output_path)
 
     async def stop(self) -> None:
         if not self.recording:
+            logger.info("Stop requested, but recorder was already inactive: output_path=%s", self.output_path)
             return
 
         if self.vc.is_listening():
             self.vc.stop_listening()
+            logger.info("Voice receive stop requested: output_path=%s", self.output_path)
         self.recording = False