feat: drill hydrogen trends into orders

src/modules/energy/api.ts

@@ -1,6 +1,7 @@
 import { fetchJson } from '../../auth/api-client';
 import type {
   HydrogenKpi, HydrogenStationTop, HydrogenRegionShare, HydrogenMonthlyPoint, HydrogenDailyRow,
+  HydrogenOrderResponse,
   HydrogenCustomerRow, HydrogenStationFull,
   ElectricKpi, ElectricDailyRow, ElectricMonthGroup,
   ElectricChargeOrderResponse,
@@ -48,6 +49,27 @@ export function fetchHydrogenDaily(query: HydrogenDailyQuery, customer: Customer
   return fetchJson<HydrogenDailyRow[]>(`${BASE}/hydrogen/daily?${q.toString()}`);
 }
 
+export interface HydrogenOrderQuery {
+  date: string;
+  customer: CustomerType;
+  stationId?: number;
+  customerName?: string;
+  page?: number;
+  limit?: number;
+}
+
+export function fetchHydrogenOrders(query: HydrogenOrderQuery): Promise<HydrogenOrderResponse> {
+  const params = new URLSearchParams({
+    date: query.date,
+    customer: query.customer,
+    page: String(query.page ?? 1),
+    limit: String(query.limit ?? 20),
+  });
+  if (query.stationId !== undefined) params.set('stationId', String(query.stationId));
+  if (query.customerName) params.set('customerName', query.customerName);
+  return fetchJson<HydrogenOrderResponse>(`${BASE}/hydrogen/orders?${params}`);
+}
+
 export interface ElectricOverviewResponse {
   kpi: ElectricKpi;
   trend: ElectricDailyRow[];