Pivots from wake-word-centric single-shot to hotkey-driven continuous
conversation. WhisperKit for STT (handles any voice/accent), Ollama
for LLM (gemma4:latest default, all local), AVSpeech for TTS (Premium
preferred). Hotkey replaces wake word as session opener.
Keeps original spec's audio capture, Log module, error types, and
non-goals list intact. Retires openWakeWord from the runtime path but
keeps the code for archaeology / potential custom training revival.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
