refactor: define electric BI metric semantics

src/modules/energy/ElectricDaily.tsx

@@ -85,7 +85,6 @@ export default function ElectricDaily() {
     ? '自定义区间'
     : QUICK_PICK_OPTIONS.find(item => item.id === pick)?.label ?? '当前时段';
   const rangeText = `${effectiveRange.start} 至 ${effectiveRange.end}`;
-  const hasFeeDetail = totalFee > 0;
   const showExternalEmpty = customer === 'external' && months !== null && totalKwh === 0;
 
   const applyQuickPick = (nextPick: DateQuickPick) => {
@@ -172,9 +171,9 @@ export default function ElectricDaily() {
         <MetricTile
           icon={Wallet}
           label="充电费用"
-          value={hasFeeDetail ? `¥${totalFee.toLocaleString('zh-CN', { maximumFractionDigits: 0 })}` : '待同步'}
-          helper={hasFeeDetail ? `均价 ${avgPrice.toFixed(2)} 元/度` : '当前明细仅返回充电量'}
-          tone={hasFeeDetail ? 'emerald' : 'slate'}
+          value={`¥${totalFee.toLocaleString('zh-CN', { maximumFractionDigits: 0 })}`}
+          helper={`综合费用强度 ${avgPrice.toFixed(2)} 元/度`}
+          tone="emerald"
         />
         <MetricTile icon={CalendarDays} label="有效天数" value={`${activeDays}`} unit="天" helper={`日均 ${avgKwh.toLocaleString('zh-CN', { maximumFractionDigits: 1 })} 度`} tone="amber" />
         <MetricTile icon={TrendingUp} label="波动提醒" value={abnormalDays} unit="天" helper="环比超过 30% 标记" tone={abnormalDays > 0 ? 'rose' : 'slate'} />

src/modules/energy/ElectricOverview.tsx

@@ -54,7 +54,7 @@ export default function ElectricOverview() {
       <div className="grid grid-cols-2 gap-3 md:grid-cols-4">
         <MetricTile icon={Wallet} label="累计充电费" value={fmtYuan(k.totalFee)} helper={fmtKwh(k.totalKwh)} />
         <MetricTile icon={CalendarClock} label="本月充电费" value={fmtYuan(k.monthFee)} helper={fmtKwh(k.monthKwh)} tone="emerald" />
-        <MetricTile icon={Gauge} label="累计均价" value={avgPrice.toFixed(2)} unit="元/度" helper={`本月 ${monthPrice.toFixed(2)} 元/度`} tone="amber" />
+        <MetricTile icon={Gauge} label="综合费用强度" value={avgPrice.toFixed(2)} unit="元/度" helper={`本月 ${monthPrice.toFixed(2)} 元/度 · 含零费用订单`} tone="amber" />
         <MetricTile icon={BatteryCharging} label="今日充电" value={k.todayKwh.toLocaleString('zh-CN', { maximumFractionDigits: 1 })} unit="度" helper={`${fmtYuan(k.todayFee)} · ${k.todayChainPct >= 0 ? '+' : ''}${(k.todayChainPct * 100).toFixed(1)}%`} tone={Math.abs(k.todayChainPct) >= 0.3 ? 'rose' : 'slate'} />
       </div>