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>

.env.example

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+# OpenClaw Gateway — Cosmo
+GATEWAY_URL=http://192.168.31.103:18789
+GATEWAY_TOKEN=your_openclaw_token_here
+AGENT=openclaw/main
+VOICE_MODEL=openai/gpt-5.4-mini
+
+# OpenClaw Gateway — Люся
+LUSYA_GATEWAY_URL=http://192.168.31.103:18790
+LUSYA_GATEWAY_TOKEN=your_openclaw_token_here
+LUSYA_AGENT=openclaw/main
+LUSYA_VOICE_MODEL=openai/gpt-5.4-mini
+
+# STT (Groq)
+STT_PROVIDER=groq
+GROQ_API_KEY=your_groq_api_key_here
+WHISPER_MODEL=small
+WHISPER_LANGUAGE=ru
+
+# Picovoice Porcupine (wake word, только на Pi)
+PORCUPINE_KEY=your_picovoice_key_here
+WAKE_WORD_COSMO=cosmo_raspberry-pi.ppn
+WAKE_WORD_LUSYA=lusya_raspberry-pi.ppn
+
+# Audio (на Pi: bluez_sink.XX_XX_XX_XX_XX_XX.a2dp_sink)
+AUDIO_SINK=
+
+# TTS (ElevenLabs)
+ELEVENLABS_API_KEY=your_elevenlabs_api_key_here
+ELEVENLABS_MODEL=eleven_flash_v2_5
+COSMO_TTS_VOICE=your_cosmo_voice_id
+LUSYA_TTS_VOICE=your_lusya_voice_id
+
+# VAD
+SILENCE_THRESHOLD=500
+SILENCE_DURATION=1.5
+MAX_DURATION=15
+FOLLOWUP_TIMEOUT=8
+
+# Логирование
+LOG_FILE=errors.log