Two plans in wave 1 (parallel): - 39-01: Sentence-buffered TTS streaming + multi-language synthesis (VPIPE-07, VPIPE-08) - 39-02: Onboarding voice hardware capability probe (ONBRD-01, ONBRD-02) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>