Adds an opt-in ac-native-stream systemd service that captures the DRM framebuffer (kmsgrab) + ALSA audio (via snd_aloop tee) and pushes an SRT stream to OBS on a Windows host for TikTok Live broadcasting. - ffmpeg-full with VAAPI hw encode for low-latency h264 - asound.conf tee routes audio to both speakers + loopback - AC_AUDIO_DEVICE env var in audio.c for clean ALSA routing - Controlled via /mnt/stream.conf on USB config partition Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>