ac-native: 'cap' camera video recorder — hold space, clips become tapes master
Requested by @minanimals for music-video shooting on his blank: bend the screen back, play the song via dj/notepat, hold space per shot — every clip lands in /mnt/tapes as MP4 with the output mix as its soundtrack (auto-synced to the song), then auto-uploads to the account like any tape. - kernel: enable CONFIG_MEDIA_SUPPORT + UVC so /dev/video* exists - camera.c: color path — YUYV → ARGB display buffer beside the QR grayscale; buffer frees now happen under the display mutex - js-bindings: system.cameraStart/Stop/Ready/Error (continuous ~30fps stream thread), color-aware cameraBlit (+mirror arg), system.tapeStart/tapeStop (quiet — no 'tape rolling' in the take) - ac-native.c: PrintScreen tape toggle refactored into shared ac_tape_start/stop; TAPE overlay now drawn after the recorder submit so recordings stay clean of UI - pieces/cap.mjs: the piece — camera preview, hold-to-record, idle-only chrome