fix: 修复部门视角切换后Tab数量统计不正确的问题

loadAllTabCounts中根据部门视角正确查询进行中任务数量

frontend/src/views/TaskHall.vue

@@ -5615,6 +5615,11 @@ const loadAllTabCounts = async () => {
     // 并行加载所有Tab的数量统计
     const promises: Promise<any>[] = []
     
+    // 获取用户信息用于判断部门视角
+    const userInfo = JSON.parse(localStorage.getItem('userInfo') || '{}')
+    const isDeptLeader = userInfo.isDepartmentLeader === 1 || managedDepartments.value.length > 0
+    const currentDeptType = effectiveDeptType.value
+    
     // 1. 可接任务数量
     promises.push(
       taskApi.getTaskHall({ page: 1, pageSize: 1 }).then(res => {
@@ -5624,19 +5629,53 @@ const loadAllTabCounts = async () => {
       }).catch(() => {})
     )
     
-    // 2. 进行中任务数量
-    promises.push(
-      taskApi.getTasks({
-        status: 'in_progress',
-        role: 'receiver',
-        page: 1,
-        pageSize: 1
-      }).then(res => {
-        if (res.data && res.data.total !== undefined) {
-          inProgressTotal.value = res.data.total
-        }
-      }).catch(() => {})
-    )
+    // 2. 进行中任务数量 - 🔥 根据部门视角正确查询
+    if (isDeptLeader && currentDeptView.value !== undefined) {
+      // 部门负责人切换了视角
+      if (currentDeptType === 'demand') {
+        // 需求部门视角：查询该部门发起的所有处理中任务
+        promises.push(
+          taskApi.getTasks({
+            publisherDeptId: currentDeptView.value,
+            excludeStatuses: 'draft,completed,cancelled',
+            page: 1,
+            pageSize: 1
+          }).then(res => {
+            if (res.data && res.data.total !== undefined) {
+              inProgressTotal.value = res.data.total
+            }
+          }).catch(() => {})
+        )
+      } else {
+        // 接单部门视角：查询该部门接收的进行中任务
+        promises.push(
+          taskApi.getTasks({
+            receiverDeptId: currentDeptView.value,
+            status: 'in_progress',
+            page: 1,
+            pageSize: 1
+          }).then(res => {
+            if (res.data && res.data.total !== undefined) {
+              inProgressTotal.value = res.data.total
+            }
+          }).catch(() => {})
+        )
+      }
+    } else {
+      // 未切换视角或普通用户：使用默认查询
+      promises.push(
+        taskApi.getTasks({
+          status: 'in_progress',
+          role: 'receiver',
+          page: 1,
+          pageSize: 1
+        }).then(res => {
+          if (res.data && res.data.total !== undefined) {
+            inProgressTotal.value = res.data.total
+          }
+        }).catch(() => {})
+      )
+    }
     
     // 3. 待审核任务数量（主任务 + 子任务组）
     if (isDepartmentLeader.value) {