refactor(energy): merge electric overview into a single page

Drop the 每日/总览 sub-tabs on 电能 — only 龙王路充电站 in scope, so
the overview is light (3 KPI cards + 1 bar chart) and combining
saves a click for daily ops. ElectricView now renders ElectricOverview
+ ElectricDaily back-to-back below the hint card.

氢能 keeps its sub-tabs (richer overview with Top5 + region chart).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/modules/energy/ElectricView.tsx

@@ -1,40 +1,14 @@
-import { useState } from 'react';
-import { LayoutDashboard, CalendarDays } from 'lucide-react';
 import ElectricOverview from './ElectricOverview';
 import ElectricDaily from './ElectricDaily';
 
-type SubTab = 'daily' | 'overview';
-
-const SUB_TABS: Array<{ id: SubTab; label: string; icon: typeof LayoutDashboard }> = [
-  { id: 'daily',    label: '每日', icon: CalendarDays },
-  { id: 'overview', label: '总览', icon: LayoutDashboard },
-];
-
 export default function ElectricView() {
-  const [sub, setSub] = useState<SubTab>('daily');
   return (
     <>
-      <div className="bg-white rounded-2xl border border-slate-100 shadow-sm p-1 sticky top-[58px] z-20 flex gap-1">
-        {SUB_TABS.map(({ id, label, icon: Icon }) => {
-          const active = sub === id;
-          return (
-            <button
-              key={id}
-              onClick={() => setSub(id)}
-              className={`flex-1 flex items-center justify-center gap-1.5 rounded-xl py-1.5 text-[12px] font-bold transition-all ${
-                active ? 'bg-blue-50 text-blue-600' : 'text-slate-400 hover:bg-slate-50'
-              }`}
-            >
-              <Icon size={14} />
-              <span>{label}</span>
-            </button>
-          );
-        })}
-      </div>
       <div className="bg-white rounded-xl border border-slate-100 px-3 py-1.5 text-[11px] text-slate-400">
         龙王路停车场充电站，期初 2025-01-01，手工导入每日更新
       </div>
-      {sub === 'overview' ? <ElectricOverview /> : <ElectricDaily />}
+      <ElectricOverview />
+      <ElectricDaily />
     </>
   );
 }