ALTER TABLE playback_decisions
  ADD COLUMN device_name text NOT NULL DEFAULT '',
  ADD COLUMN client_name text NOT NULL DEFAULT '',
  ADD COLUMN client_version text NOT NULL DEFAULT '',
  ADD COLUMN remote_ip_hash text NOT NULL DEFAULT '';

ALTER TABLE playback_sessions
  ADD COLUMN media_id uuid,
  ADD COLUMN source_id uuid,
  ADD COLUMN node_id uuid,
  ADD COLUMN position_ticks bigint NOT NULL DEFAULT 0 CHECK (position_ticks >= 0),
  ADD COLUMN device_name text NOT NULL DEFAULT '',
  ADD COLUMN client_name text NOT NULL DEFAULT '',
  ADD COLUMN client_version text NOT NULL DEFAULT '';

CREATE INDEX playback_sessions_recent_idx
  ON playback_sessions(updated_at DESC, id DESC);