fix(energy): connect Foshan external vehicle hydrogen orders

src/server/routes/energy/query-model.ts

@@ -8,10 +8,14 @@ export interface EnergyDateRange {
 
 const YMD_RE = /^\d{4}-\d{2}-\d{2}$/;
 
-// 新账本目前只承载羚牛车辆订单；外部车辆仍需返回空集合而不是混用羚牛数据。
+// 主数据 ID 341：佛山南海羚牛加氢站。车牌文字存在不代表已关联车辆。
+const FOSHAN_LINGNIU_STATION_ID = 341;
+
+// 日明细账本使用别名 b；两类互斥，其他订单继续保留在原羚牛范围内。
 export function customerClause(customer: CustomerKind): string {
-  if (customer === 'external') return '1=0';
-  if (customer === 'lingniu') return '1=1';
+  const external = `(COALESCE(b.station_id, 0) = ${FOSHAN_LINGNIU_STATION_ID} AND b.vehicle_id IS NULL)`;
+  if (customer === 'external') return external;
+  if (customer === 'lingniu') return `NOT ${external}`;
   return '1=1';
 }