-- Tables affected: qt_configurations
-- recovery.not-started: check first; ADD COLUMN fails if price_updated_at already exists
-- recovery.partial: ALTER TABLE qt_configurations DROP COLUMN price_updated_at;
-- recovery.completed: no action needed
-- verify: price_updated_at column missing | SELECT 1 FROM information_schema.COLUMNS WHERE table_schema=DATABASE() AND table_name='qt_configurations' AND column_name='price_updated_at' HAVING COUNT(*)=0

-- Add price_updated_at column to qt_configurations table
ALTER TABLE qt_configurations
ADD COLUMN price_updated_at TIMESTAMP NULL DEFAULT NULL
AFTER server_count;