-- WhispAssist dual-channel capture (FR-SPK/FR-CAP). Forward-only migration.
-- Mirrors docs/03-data-model.md.
PRAGMA foreign_keys = ON;

-- How audio.wav stores its channels:
--   NULL / 'summed' — mic summed into every loopback channel (all pre-2026-07-14
--                     recordings and every import): one mixed mono-equivalent.
--   'split'         — stereo, left = microphone ("You"), right = system/loopback
--                     ("Speaker"), kept separate so diarization runs on the far
--                     side alone. New mic-enabled recordings.
-- Diarization, playback (downmix), and bundle export branch on this.
ALTER TABLE meetings ADD COLUMN audio_layout TEXT;