feat(全局概览): 快捷入口下方新增人员操作统计区域

- 表格展示每人 接收/转交/上传备注/总次数，按总次数降序
- 跟随顶部时间筛选(今天/近7天/近30天/自定义)联动刷新

frontend/src/pages/admin/AdminDashboard.tsx

@@ -1,14 +1,14 @@
 import { useEffect, useState, useCallback } from "react";
 import {
   Package, ClipboardList, Bell, TrendingUp, AlertTriangle,
-  RefreshCw, Loader2, AlertCircle, ArrowRight, Clock, MessageCircle, CheckCircle2,
+  RefreshCw, Loader2, AlertCircle, ArrowRight, Clock, MessageCircle, CheckCircle2, Users,
 } from "lucide-react";
 import { useNavigate } from "react-router-dom";
 import { Radio, DatePicker, Drawer, Input } from "antd";
 import dayjs, { type Dayjs } from "dayjs";
 import {
-  fetchDashboardStats, fetchWipTasks, fetchDashboardMessages, fetchCompletedTasks, fetchRejectedTasks,
-  type DashboardStats, type WipTask, type ProductMessageItem, type CompletedTask, type RejectedTask,
+  fetchDashboardStats, fetchWipTasks, fetchDashboardMessages, fetchCompletedTasks, fetchRejectedTasks, fetchUserOperations,
+  type DashboardStats, type WipTask, type ProductMessageItem, type CompletedTask, type RejectedTask, type UserOperation,
 } from "../../services/dashboardApi";
 
 const { RangePicker } = DatePicker;
@@ -269,6 +269,10 @@ export default function AdminDashboard() {
   const [rejectedTasks, setRejectedTasks] = useState<RejectedTask[]>([]);
   const [rejectedLoading, setRejectedLoading] = useState(false);
 
+  // 人员操作统计
+  const [opStats, setOpStats] = useState<UserOperation[]>([]);
+  const [opLoading, setOpLoading] = useState(false);
+
   const navigate = useNavigate();
 
   // ── 加载主数据 ──
@@ -323,6 +327,18 @@ export default function AdminDashboard() {
       .finally(() => setRejectedLoading(false));
   };
 
+  // 人员操作统计 — 跟随顶部时间筛选
+  const loadUserOperations = useCallback(() => {
+    setOpLoading(true);
+    const { since, until } = rangeToParams(dateKey, customRange);
+    fetchUserOperations(since, until)
+      .then(setOpStats)
+      .catch(() => setOpStats([]))
+      .finally(() => setOpLoading(false));
+  }, [dateKey, customRange]);
+
+  useEffect(() => { loadUserOperations(); }, [loadUserOperations]);
+
   const onMsgSearch = (value: string) => {
     setMsgKeyword(value);
     loadMessages(value);
@@ -528,6 +544,50 @@ export default function AdminDashboard() {
         </div>
       </div>
 
+      {/* ═══ 人员操作统计 ═══ */}
+      <div className="rounded-xl bg-white p-5 shadow-sm">
+        <div className="mb-3 flex items-center justify-between">
+          <h3 className="flex items-center gap-2 text-sm font-semibold text-gray-700">
+            <Users className="h-4 w-4 text-blue-500" /> 👥 人员操作统计
+          </h3>
+          <span className="text-[11px] text-gray-400">接收 / 转交 / 上传备注 · 跟随时间筛选</span>
+        </div>
+        {opLoading ? (
+          <div className="flex items-center justify-center py-12">
+            <Loader2 className="h-6 w-6 animate-spin text-blue-500" />
+          </div>
+        ) : opStats.length === 0 ? (
+          <div className="py-12 text-center text-sm text-gray-400">该时段暂无操作记录</div>
+        ) : (
+          <div className="overflow-x-auto">
+            <table className="w-full text-left text-sm">
+              <thead>
+                <tr className="border-b border-gray-100 text-xs text-gray-400">
+                  <th className="py-2 pr-3 font-medium">#</th>
+                  <th className="py-2 pr-3 font-medium">人员</th>
+                  <th className="py-2 pr-3 text-right font-medium">接收</th>
+                  <th className="py-2 pr-3 text-right font-medium">转交</th>
+                  <th className="py-2 pr-3 text-right font-medium">上传备注</th>
+                  <th className="py-2 text-right font-medium">总次数</th>
+                </tr>
+              </thead>
+              <tbody>
+                {opStats.map((u, idx) => (
+                  <tr key={u.user_id} className="border-b border-gray-50 last:border-0 hover:bg-gray-50/50">
+                    <td className="py-2 pr-3 text-xs text-gray-400">{idx + 1}</td>
+                    <td className="py-2 pr-3 font-medium text-gray-800">{u.user_name}</td>
+                    <td className="py-2 pr-3 text-right text-gray-600">{u.receive_count}</td>
+                    <td className="py-2 pr-3 text-right text-gray-600">{u.transfer_count}</td>
+                    <td className="py-2 pr-3 text-right text-gray-600">{u.record_count}</td>
+                    <td className="py-2 text-right font-bold text-blue-600">{u.total}</td>
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+          </div>
+        )}
+      </div>
+
       {/* ═══ 留言抽屉 ═══ */}
       <Drawer
         title={<span className="text-base font-bold">💬 协同留言板 <span className="font-normal text-gray-400">全厂 · {msgTotal} 条</span></span>}

frontend/src/services/dashboardApi.ts

@@ -54,6 +54,15 @@ export interface RejectedTask {
   rejected_at: string | null;
 }
 
+export interface UserOperation {
+  user_id: string;
+  user_name: string;
+  receive_count: number;
+  transfer_count: number;
+  record_count: number;
+  total: number;
+}
+
 export interface PersonDevice {
   product_id: string;
   serial_number: string;
@@ -142,6 +151,14 @@ export async function fetchRejectedTasks(since?: string, until?: string): Promis
   return data;
 }
 
+export async function fetchUserOperations(since?: string, until?: string): Promise<UserOperation[]> {
+  const params: Record<string, string> = {};
+  if (since) params.since = since;
+  if (until) params.until = until;
+  const { data } = await api.get<UserOperation[]>("/dashboard/user-operations", { params });
+  return data;
+}
+
 export async function fetchPeopleWorkload(): Promise<PersonWorkload[]> {
   const { data } = await api.get<PersonWorkload[]>("/dashboard/people-workload");
   return data;