CREATE TABLE IF NOT EXISTS platform_customer_mileage_rules (
  scope_key VARCHAR(160) NOT NULL PRIMARY KEY,
  version BIGINT NOT NULL,
  rules_json JSON NOT NULL,
  updated_by VARCHAR(160) NOT NULL,
  updated_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE IF NOT EXISTS platform_customer_vehicle_assignment (
  tenant_ref VARCHAR(100) NOT NULL,
  vin VARCHAR(32) NOT NULL,
  plate VARCHAR(40) NOT NULL DEFAULT '',
  customer_name VARCHAR(255) NOT NULL DEFAULT '',
  department_name VARCHAR(255) NOT NULL DEFAULT '',
  responsible_person VARCHAR(255) NOT NULL DEFAULT '',
  observed_at DATETIME(3) NOT NULL,
  PRIMARY KEY (tenant_ref, vin),
  KEY idx_observed (observed_at)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;