Initial commit: Cosmo Voice Satellite

Two-agent voice assistant (Cosmo + Люся) via OpenClaw Gateway.
Streaming STT (Groq) + LLM + TTS (ElevenLabs) pipeline with
keep-alive sessions, barge-in, and daily conversation sessions.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

satellite/stt.py

@@ -0,0 +1,55 @@
+import io
+import wave
+
+from .config import groq_client, STT_PROVIDER, WHISPER_MODEL, WHISPER_LANG, log
+
+
+def transcribe_groq_bytes(wav_bytes: bytes) -> str:
+    """Отправляет WAV байты в Groq без записи на диск"""
+    buf = io.BytesIO(wav_bytes)
+    buf.name = "audio.wav"
+    result = groq_client.audio.transcriptions.create(
+        file=buf,
+        model="whisper-large-v3-turbo",
+        language="ru",
+    )
+    return result.text
+
+
+def frames_to_wav(frames: list[bytes]) -> bytes:
+    """Конвертирует сырые PCM фреймы в WAV в памяти"""
+    buf = io.BytesIO()
+    wf = wave.open(buf, "wb")
+    wf.setnchannels(1)
+    wf.setsampwidth(2)
+    wf.setframerate(16000)
+    wf.writeframes(b"".join(frames))
+    wf.close()
+    return buf.getvalue()
+
+
+def transcribe(frames: list[bytes]) -> str:
+    """Транскрибирует аудио фреймы — всё в памяти, без диска"""
+    try:
+        wav_bytes = frames_to_wav(frames)
+
+        if STT_PROVIDER == "groq":
+            return transcribe_groq_bytes(wav_bytes)
+
+        # Whisper fallback — нужен файл на диске
+        import tempfile
+        import os
+        from faster_whisper import WhisperModel
+        with tempfile.NamedTemporaryFile(suffix=".wav", delete=False) as f:
+            f.write(wav_bytes)
+            tmp_path = f.name
+        try:
+            model = WhisperModel(WHISPER_MODEL, device="cpu", compute_type="int8")
+            segments, _ = model.transcribe(tmp_path, language=WHISPER_LANG)
+            return " ".join(s.text for s in segments).strip()
+        finally:
+            os.unlink(tmp_path)
+    except Exception as e:
+        log.exception("STT ошибка")
+        print(f"⚠️  Ошибка распознавания речи: {e}")
+        return ""