task-259(admin.html观感对齐): 生成记录页对齐（指定用户下拉+起止时间筛选/类型中文/≤3缩略图/空态）

admin-frontend-vue/src/pages/records/history-user-option.ts

@@ -0,0 +1,31 @@
+/** 历史页“指定用户”下拉选项解析（module 13 task 259）：/api/admin/users?page_size=999 的用户精简选项。纯逻辑。 */
+import { unwrap } from '../../api/envelope.ts'
+
+export interface HistoryUserOption {
+  id: number
+  username: string
+}
+
+function idOf(value: unknown): number | null {
+  return typeof value === 'number' && Number.isFinite(value) && value >= 1 ? Math.floor(value) : null
+}
+
+function text(value: unknown): string {
+  return typeof value === 'string' ? value.trim() : ''
+}
+
+export function parseHistoryUserOptions(payload: unknown): HistoryUserOption[] {
+  const core = unwrap<unknown>(payload)
+  if (!core || typeof core !== 'object') return []
+  const items = (core as Record<string, unknown>).items
+  if (!Array.isArray(items)) return []
+  const options: HistoryUserOption[] = []
+  for (const raw of items) {
+    if (!raw || typeof raw !== 'object') continue
+    const row = raw as Record<string, unknown>
+    const id = idOf(row.id)
+    if (id === null) continue
+    options.push({ id, username: text(row.username) || `#${id}` })
+  }
+  return options
+}