-- The QR/RFID access reader was misnamed "GEE" on a wrong early assumption; it's actually a
-- Dingtian DT-008 (same vendor as the relay board). The driver was renamed
-- `gee-qr-reader` → `dingtian-qr-reader`. `devices.driver_id` is the persisted registry
-- lookup key, so rewrite existing reader rows or they'd fail to resolve a driver. Idempotent.
UPDATE `devices` SET `driver_id` = 'dingtian-qr-reader' WHERE `driver_id` = 'gee-qr-reader';