fix(energy): deliver prototype-aligned hydrogen board and acceptance fixes

Co-authored-by: HiFox Agent <agents-noreply@hifox.com>

src/server/routes/energy/hydrogen-station-board.ts

@@ -19,7 +19,7 @@ function numberValue(value: unknown): number {
   return Number(value) || 0;
 }
 
-// 单站经营看板只做只读聚合。站点列表保留区间内零业务站点，便于核对站点覆盖范围。
+// 单站经营看板只做只读聚合。列表仅返回所选区间内存在有效加氢记录的站点。
 export function registerHydrogenStationBoardRoute(
   app: Hono,
   { hydrogenPool, cached }: HydrogenStationBoardDependencies,
@@ -140,7 +140,7 @@ export function registerHydrogenStationBoardRoute(
             kg: dailyKgByStation.get(id)?.get(date) ?? 0,
           })),
         };
-      });
+      }).filter(station => station.recordCount > 0);
 
       let selected = null;
       if (stationId) {