The websocket handler now accumulates the full session's PCM audio
(not just the per-chunk buffer that gets discarded after each
worker call) and, on stop, writes it as a wav to UPLOAD_DIR plus a
result JSON to RESULT_DIR via the new _save_realtime_history()
helper — same shape /transcribe already writes, tagged
gateway_backend="realtime" so the history table visually
distinguishes it from file uploads. This reuses /asr/history and
/asr/uploads/{filename} as-is; no new endpoints needed.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Split the single ASR gateway into app/main.py (entrypoint) + app/core
(shared env helpers) + app/asr (all existing ASR logic, unchanged
behavior) + app/tts (placeholder router/config, no engine yet), so a
real TTS backend can be dropped in later without reshuffling ASR code.
API moved under /asr/* and /tts/* prefixes; UI gained a top-level
ASR/TTS tab switcher built on a reusable nested .tab-group mechanism,
with JS split into common.js/asr.js/tts.js.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
