高频行情合批（如果需要）
// 在复杂逻辑上一行加注释：行情高频更新时合批后再换数组引用，降低重算与渲染频次
let scheduled = false
const pending: Record<string, Partial<Account>> = {}

function queueAccountPatch(loginid: string, patch: Partial<Account>) {
  pending[loginid] = { ...(pending[loginid] ?? {}), ...patch }
  if (scheduled) return
  scheduled = true
  requestAnimationFrame(() => {
    const list = accountList.value ?? []
    const next = list.slice()
    for (const [id, p] of Object.entries(pending)) {
      const idx = next.findIndex(a => a.loginid === id)
      if (idx !== -1) Object.assign(next[idx], p)
      delete pending[id]
    }
    accountList.value = next          // ← 一次性换引用
    scheduled = false
  })
}