feat: persist hydrogen order pages

src/modules/energy/HydrogenDaily.tsx

@@ -117,6 +117,7 @@ export default function HydrogenDaily() {
       startDate: nextRange.start,
       endDate: nextRange.end,
       selectedDate: undefined,
+      orderPage: undefined,
     }, 'replace');
   };
 
@@ -132,6 +133,7 @@ export default function HydrogenDaily() {
       startDate: normalized.start,
       endDate: normalized.end,
       selectedDate: undefined,
+      orderPage: undefined,
     }, 'replace');
   };
 
@@ -142,6 +144,7 @@ export default function HydrogenDaily() {
       vehicleScope: next,
       startDate: effectiveRange.start,
       endDate: effectiveRange.end,
+      orderPage: undefined,
     }, 'replace');
   };
 
@@ -162,6 +165,7 @@ export default function HydrogenDaily() {
       startDate: effectiveRange.start,
       endDate: effectiveRange.end,
       selectedDate: date,
+      orderPage: undefined,
     }, 'push');
   };
 
@@ -172,9 +176,17 @@ export default function HydrogenDaily() {
       startDate: effectiveRange.start,
       endDate: effectiveRange.end,
       selectedDate: undefined,
+      orderPage: undefined,
     }, 'replace');
   };
 
+  const changeOrderPage = useCallback((page: number, mode: 'push' | 'replace') => {
+    commitDrillContext({
+      ...drillContext,
+      orderPage: page > 1 ? page : undefined,
+    }, mode);
+  }, [commitDrillContext, drillContext]);
+
   const retryLoad = () => {
     setRows(null);
     setError(null);
@@ -388,9 +400,11 @@ export default function HydrogenDaily() {
         <HydrogenOrders
           date={selectedDate}
           dailyRow={selectedDailyRow}
+          page={drillContext.orderPage ?? 1}
           vehicleScope={vehicleScope}
           stationId={selectedStationId}
           customerName={selectedCustomerName}
+          onPageChange={changeOrderPage}
           onClose={closeOrders}
         />
       )}

src/modules/energy/HydrogenOrders.tsx

@@ -13,41 +13,47 @@ function fmtMoney(value: number): string {
 export default function HydrogenOrders({
   date,
   dailyRow,
+  page,
   vehicleScope,
   stationId,
   customerName,
+  onPageChange,
   onClose,
 }: {
   date: string;
   dailyRow?: HydrogenDailyRow;
+  page: number;
   vehicleScope: CustomerType;
   stationId?: number;
   customerName?: string;
+  onPageChange: (page: number, mode: 'push' | 'replace') => void;
   onClose: () => void;
 }) {
-  const [page, setPage] = useState(1);
   const [data, setData] = useState<HydrogenOrderResponse | null>(null);
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState<string | null>(null);
   const [retryKey, setRetryKey] = useState(0);
 
-  useEffect(() => {
-    setPage(1);
-  }, [vehicleScope, customerName, date, stationId]);
-
   useEffect(() => {
     let cancelled = false;
     setLoading(true);
     setError(null);
     setData(null);
     fetchHydrogenOrders({ date, customer: vehicleScope, stationId, customerName, page, limit: 20 })
-      .then(result => { if (!cancelled) setData(result); })
+      .then(result => {
+        if (cancelled) return;
+        if (page > result.totalPages) {
+          onPageChange(result.totalPages, 'replace');
+          return;
+        }
+        setData(result);
+      })
       .catch(loadError => {
         if (!cancelled) setError(loadError instanceof Error ? loadError.message : String(loadError));
       })
       .finally(() => { if (!cancelled) setLoading(false); });
     return () => { cancelled = true; };
-  }, [vehicleScope, customerName, date, page, retryKey, stationId]);
+  }, [vehicleScope, customerName, date, onPageChange, page, retryKey, stationId]);
 
   const totalPages = data?.totalPages ?? 1;
   const scope = customerName
@@ -165,8 +171,8 @@ export default function HydrogenOrders({
         <footer className="flex items-center justify-between border-t border-slate-100 px-3 py-3 md:px-4">
           <span className="text-[10px] font-bold text-slate-400">第 {page} / {totalPages} 页</span>
           <div className="flex gap-2">
-            <button type="button" onClick={() => setPage(current => Math.max(1, current - 1))} disabled={page <= 1 || loading} className="flex h-8 w-8 items-center justify-center rounded-lg border border-slate-200 text-slate-500 disabled:opacity-30" aria-label="上一页加氢订单" title="上一页"><ChevronLeft size={14} /></button>
+            <button type="button" onClick={() => onPageChange(Math.max(1, page - 1), 'push')} disabled={page <= 1 || loading} className="flex h-8 w-8 items-center justify-center rounded-lg border border-slate-200 text-slate-500 disabled:opacity-30" aria-label="上一页加氢订单" title="上一页"><ChevronLeft size={14} /></button>
-            <button type="button" onClick={() => setPage(current => Math.min(totalPages, current + 1))} disabled={page >= totalPages || loading} className="flex h-8 w-8 items-center justify-center rounded-lg border border-slate-200 text-slate-500 disabled:opacity-30" aria-label="下一页加氢订单" title="下一页"><ChevronRight size={14} /></button>
+            <button type="button" onClick={() => onPageChange(Math.min(totalPages, page + 1), 'push')} disabled={page >= totalPages || loading} className="flex h-8 w-8 items-center justify-center rounded-lg border border-slate-200 text-slate-500 disabled:opacity-30" aria-label="下一页加氢订单" title="下一页"><ChevronRight size={14} /></button>
           </div>
         </footer>
       ) : null}

src/modules/energy/hydrogen-drill-context.test.ts

@@ -82,20 +82,30 @@ test('clears station parameters when returning to overview', () => {
   assert.equal(url, '/energy?company=5&hydrogenScope=lingniu#hydrogen');
 });
 
-test('preserves a selected order date in the hydrogen analysis URL', () => {
+test('preserves a selected order date and page in the hydrogen analysis URL', () => {
   const context = parseHydrogenDrillContext(
-    '?hydrogenScope=lingniu&hydrogenStart=2026-08-01&hydrogenEnd=2026-08-07&hydrogenDate=2026-08-05',
+    '?hydrogenScope=lingniu&hydrogenStart=2026-08-01&hydrogenEnd=2026-08-07&hydrogenDate=2026-08-05&hydrogenPage=3',
   );
   assert.equal(context.selectedDate, '2026-08-05');
+  assert.equal(context.orderPage, 3);
   assert.equal(
     buildHydrogenDrillUrl(
       { pathname: '/energy', search: '?company=5', hash: '#hydrogen' },
       context,
     ),
-    '/energy?company=5&hydrogenScope=lingniu&hydrogenStart=2026-08-01&hydrogenEnd=2026-08-07&hydrogenDate=2026-08-05#hydrogen',
+    '/energy?company=5&hydrogenScope=lingniu&hydrogenStart=2026-08-01&hydrogenEnd=2026-08-07&hydrogenDate=2026-08-05&hydrogenPage=3#hydrogen',
   );
   assert.equal(
     parseHydrogenDrillContext('?hydrogenStart=2026-08-01&hydrogenEnd=2026-08-07&hydrogenDate=2026-08-08').selectedDate,
     undefined,
   );
+  assert.equal(parseHydrogenDrillContext('?hydrogenPage=3').orderPage, undefined);
+  assert.equal(parseHydrogenDrillContext('?hydrogenDate=2026-08-05&hydrogenPage=0').orderPage, undefined);
+  assert.equal(
+    buildHydrogenDrillUrl(
+      { pathname: '/energy', search: '', hash: '#hydrogen' },
+      { level: 'overview', vehicleScope: 'lingniu', orderPage: 3 },
+    ),
+    '/energy?hydrogenScope=lingniu#hydrogen',
+  );
 });

src/modules/energy/hydrogen-drill-context.ts

@@ -12,6 +12,7 @@ export interface HydrogenDrillContext {
   startDate?: string;
   endDate?: string;
   selectedDate?: string;
+  orderPage?: number;
 }
 
 interface LocationParts {
@@ -74,6 +75,8 @@ export function parseHydrogenDrillContext(search: string): HydrogenDrillContext
   const rangeEnd = startDate && endDate ? (startDate <= endDate ? endDate : startDate) : undefined;
   if (selectedDate && (!rangeStart || !rangeEnd || (selectedDate >= rangeStart && selectedDate <= rangeEnd))) {
     context.selectedDate = selectedDate;
+    const orderPage = positiveInteger(params.get('hydrogenPage'));
+    if (orderPage && orderPage > 1) context.orderPage = orderPage;
   }
   return context;
 }
@@ -93,6 +96,7 @@ export function buildHydrogenDrillUrl(
     'hydrogenStart',
     'hydrogenEnd',
     'hydrogenDate',
+    'hydrogenPage',
   ]) {
     params.delete(key);
   }
@@ -110,6 +114,9 @@ export function buildHydrogenDrillUrl(
   if (context.startDate) params.set('hydrogenStart', context.startDate);
   if (context.endDate) params.set('hydrogenEnd', context.endDate);
   if (context.selectedDate) params.set('hydrogenDate', context.selectedDate);
+  if (context.selectedDate && context.orderPage && context.orderPage > 1) {
+    params.set('hydrogenPage', String(context.orderPage));
+  }
 
   const query = params.toString();
   return `${location.pathname}${query ? `?${query}` : ''}${location.hash}`;