feat(energy): 电能统计切到 bi_ele_charge_record，外部数据接通

- /api/energy/electric/overview & /electric/monthly 不再读 tab_energy_electricity_bill
- 改读 bi_ele_charge_record：kwh/fee/start_time
- 外部/我司用 vehicle_kind 区分（external/internal）
- 电能默认 customer 由 'external' 改 'lingniu'，与导入页约定一致
- ElectricDaily 移除「数据对接中…」友好空状态（外部已有数据）

ele 导入页同步收紧：
- 命中系统车辆=internal，未命中（含车牌为空）一律 external
- 移除 unknown 分类、KPI 卡、批次列、过滤按钮、UploadResult 字段
- 历史 unknown 行已 UPDATE 为 external

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

src/server/routes/ele/index.ts

@@ -213,7 +213,8 @@ app.post('/import', async (c) => {
   const values = records.map(r => {
     const plate = r.values.plate || r.values.judgedPlate;
     const matchedId = plate ? plateMap.get(plate) || null : null;
-    const kind = matchedId ? 'internal' : (plate ? 'external' : 'unknown');
+    // 命中系统车辆=internal；其余（含车牌为空）一律 external
+    const kind = matchedId ? 'internal' : 'external';
     return [
       r.orderNo,
       r.values.stationNo, r.values.stationName, r.values.terminalName,
@@ -234,13 +235,12 @@ app.post('/import', async (c) => {
   const inserted = result.affectedRows;
   const dbDuplicates = records.length - inserted;
 
-  // 统计内/外/未知
-  let internal = 0, external = 0, unknown = 0;
+  // 统计内/外（无车牌也算外部）
+  let internal = 0, external = 0;
   for (const r of records) {
     const plate = r.values.plate || r.values.judgedPlate;
     if (plate && plateMap.has(plate)) internal++;
-    else if (plate) external++;
-    else unknown++;
+    else external++;
   }
 
   return c.json({
@@ -251,7 +251,7 @@ app.post('/import', async (c) => {
     fileDuplicates,
     inserted,
     dbDuplicates,
-    breakdown: { internal, external, unknown },
+    breakdown: { internal, external },
   });
 });
 
@@ -268,7 +268,7 @@ app.get('/list', async (c) => {
 
   const where: string[] = ['1=1'];
   const params: (string | number)[] = [];
-  if (kind === 'internal' || kind === 'external' || kind === 'unknown') {
+  if (kind === 'internal' || kind === 'external') {
     where.push('vehicle_kind = ?');
     params.push(kind);
   }
@@ -313,7 +313,6 @@ app.get('/batches', async (c) => {
             COUNT(*) AS records,
             SUM(CASE WHEN vehicle_kind='internal' THEN 1 ELSE 0 END) AS internal_count,
             SUM(CASE WHEN vehicle_kind='external' THEN 1 ELSE 0 END) AS external_count,
-            SUM(CASE WHEN vehicle_kind='unknown' THEN 1 ELSE 0 END) AS unknown_count,
             ROUND(SUM(kwh), 2) AS total_kwh,
             ROUND(SUM(fee), 2) AS total_fee
        FROM bi_ele_charge_record