feat：单账户配置余额脚本 + 刷新按钮即用脚本”，并去掉独立页面/标签。

具体改动

  - 后端
      - src/models/redis.js：新增脚本配置存取 account_balance_script:{platform}:{accountId}。
      - src/services/accountBalanceService.js：支持脚本查询。若账户有脚本配置且 queryApi=true，调用 balanceScriptService.execute 获取余额/配额，缓存后返回。
      - src/routes/admin/accountBalance.js：新增接口
          - GET /admin/accounts/:id/balance/script?platform=...
          - PUT /admin/accounts/:id/balance/script?platform=...
          - POST /admin/accounts/:id/balance/script/test?platform=...
  - 前端
      - 新增弹窗 AccountBalanceScriptModal，在账户管理页每个账户“余额/配额”下方有“配置余额脚本”按钮，支持填写 baseUrl/apiKey/token/extra/超时/自动间隔、编写脚本、测试、保存。
      - 将余额脚本独立路由/标签移除。
  - 格式/ lint 已通过（新组件及 AccountsView）。

src/routes/admin/accountBalance.js

@@ -2,6 +2,7 @@ const express = require('express')
 const { authenticateAdmin } = require('../../middleware/auth')
 const logger = require('../../utils/logger')
 const accountBalanceService = require('../../services/accountBalanceService')
+const balanceScriptService = require('../../services/balanceScriptService')
 
 const router = express.Router()
 
@@ -127,4 +128,76 @@ router.delete('/accounts/:accountId/balance/cache', authenticateAdmin, async (re
   }
 })
 
+// 6) 获取/保存/测试余额脚本配置（单账户）
+router.get('/accounts/:accountId/balance/script', authenticateAdmin, async (req, res) => {
+  try {
+    const { accountId } = req.params
+    const { platform } = req.query
+
+    const valid = ensureValidPlatform(platform)
+    if (!valid.ok) {
+      return res.status(valid.status).json({ success: false, error: valid.error })
+    }
+
+    const config = await accountBalanceService.redis.getBalanceScriptConfig(valid.platform, accountId)
+    return res.json({ success: true, data: config || null })
+  } catch (error) {
+    logger.error('获取余额脚本配置失败', error)
+    return res.status(500).json({ success: false, error: error.message })
+  }
+})
+
+router.put('/accounts/:accountId/balance/script', authenticateAdmin, async (req, res) => {
+  try {
+    const { accountId } = req.params
+    const { platform } = req.query
+    const valid = ensureValidPlatform(platform)
+    if (!valid.ok) {
+      return res.status(valid.status).json({ success: false, error: valid.error })
+    }
+
+    const payload = req.body || {}
+    await accountBalanceService.redis.setBalanceScriptConfig(valid.platform, accountId, payload)
+    return res.json({ success: true, data: payload })
+  } catch (error) {
+    logger.error('保存余额脚本配置失败', error)
+    return res.status(500).json({ success: false, error: error.message })
+  }
+})
+
+router.post('/accounts/:accountId/balance/script/test', authenticateAdmin, async (req, res) => {
+  try {
+    const { accountId } = req.params
+    const { platform } = req.query
+    const valid = ensureValidPlatform(platform)
+    if (!valid.ok) {
+      return res.status(valid.status).json({ success: false, error: valid.error })
+    }
+
+    const payload = req.body || {}
+    const scriptBody = payload.scriptBody
+    if (!scriptBody) {
+      return res.status(400).json({ success: false, error: '脚本内容不能为空' })
+    }
+
+    const result = await balanceScriptService.execute({
+      scriptBody,
+      timeoutSeconds: payload.timeoutSeconds || 10,
+      variables: {
+        baseUrl: payload.baseUrl || '',
+        apiKey: payload.apiKey || '',
+        token: payload.token || '',
+        accountId,
+        platform: valid.platform,
+        extra: payload.extra || ''
+      }
+    })
+
+    return res.json({ success: true, data: result })
+  } catch (error) {
+    logger.error('测试余额脚本失败', error)
+    return res.status(400).json({ success: false, error: error.message })
+  }
+})
+
 module.exports = router