javis-bot f12e6b28c2 perf(bridge): lock STT to Korean + add per-stage turn timing ...

- transcribe() now passes language="ko" (STT_LANGUAGE env, default ko): skips
  Whisper auto-detect, fixing occasional Korean->Chinese mis-detection and
  shaving latency. LLM is already locked via OUTPUT_LANGUAGE=Korean; MeloTTS is
  Korean-only — so STT/LLM/TTS are all Korean now.
- converse_stream logs "⏱️ turn stt=.. think(LLM)=.. tts=.. total=.." so the
  ~30s voice-reply latency can be attributed to the real bottleneck stage.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

2026-06-13 21:53:47 +09:00

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