-- Web-playback transcoding cache (H.264 MP4) with TTL enforced in application layer.
-- Run against the main punimtag database (same DB as photos table).

ALTER TABLE photos ADD COLUMN IF NOT EXISTS web_playable_path TEXT;
ALTER TABLE photos ADD COLUMN IF NOT EXISTS web_transcode_status TEXT NOT NULL DEFAULT 'none';
ALTER TABLE photos ADD COLUMN IF NOT EXISTS web_transcode_error TEXT;
ALTER TABLE photos ADD COLUMN IF NOT EXISTS web_transcode_job_id TEXT;

COMMENT ON COLUMN photos.web_playable_path IS 'Path to browser-safe MP4 or original path if already H.264/AAC-safe';
COMMENT ON COLUMN photos.web_transcode_status IS 'none|queued|running|ready|failed';