fix: TaskCenter待办列表改用getDashboardData去重todos，与概览91一致(原211未去重)

backend/src/routes/dashboard.routes.ts

@@ -246,12 +246,9 @@ router.get('/workspace/next-actions', authMiddleware, async (req: AuthRequest, r
     const now = new Date()
     const in30Days = new Date(now.getTime() + 30 * 24 * 60 * 60 * 1000)
 
-    // 1. 待办风险项（全部）
-    const riskItems = await prisma.riskItem.findMany({
-      where: { orgId, status: 'PENDING' },
-      orderBy: { createdAt: 'desc' },
-      select: { id: true, title: true, type: true, level: true, deadline: true, actionUrl: true, employeeId: true },
-    })
+    // 1. 待办风险项（使用 getDashboardData 的去重 todos，与概览一致）
+    const dashboardData = await getDashboardData(orgId)
+    const dedupedTodos = dashboardData.todos
 
     // 2. 草稿发薪批次
     const draftBatches = await prisma.payrollBatch.findMany({
@@ -293,13 +290,13 @@ router.get('/workspace/next-actions', authMiddleware, async (req: AuthRequest, r
       {
         category: '待办事项',
         priority: 'high',
-        items: riskItems.map(r => ({
-          id: r.id,
-          title: r.title,
-          type: r.type,
-          level: r.level,
-          dueDate: r.deadline?.toISOString().slice(0, 10),
-          link: r.actionUrl || '/',
+        items: dedupedTodos.map(t => ({
+          id: t.id,
+          title: t.title,
+          type: t.type,
+          level: t.level,
+          dueDate: t.deadline,
+          link: t.actionUrl || '/',
         })),
       },
       {