feat: 支局长/分管领导可为任意客户经理代填记录

后端:
- 5个模块的 Create/Update schema 新增可选 manager_id 字段
- POST 端点: director/leader 可指定 manager_id，manager 角色自动用自身
- PUT 端点: director/leader 可修改 manager_id，manager 角色禁止修改

前端（移动端+桌面端共10个页面）:
- 支局长/领导可见「客户经理」下拉选择框
- 创建和编辑时均可指定记录归属的客户经理
- 涵盖今日拜访、今日纪要、工作计划、商机跟单、要客拜访五个模块

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/src/views/mobile/DailyNoteForm.vue

@@ -3,13 +3,16 @@ import { ref, onMounted, computed } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
 import { ElMessage, ElMessageBox } from 'element-plus'
 import { todayStr } from '@/utils'
+import { useAuthStore } from '@/stores/auth'
 import api from '@/api/index'
 import EditLogPanel from '@/components/EditLogPanel.vue'
 
 const router = useRouter()
 const route = useRoute()
+const auth = useAuthStore()
 const isEdit = computed(() => !!route.params.id)
 const submitLoading = ref(false)
+const allManagers = ref<any[]>([])
 
 const categories = ['行政事务', '合同整理', '发票处理', '内部会议', '培训学习', '其他']
 
@@ -24,6 +27,7 @@ const form = ref({
   category: '其他',
   content: '',
   time_range: '',
+  manager_id: auth.userId || '',
 })
 
 function onTimeRangeChange(val: [string, string] | null) {
@@ -36,6 +40,9 @@ function parseTimeRange(str: string): [string, string] | null {
 }
 
 onMounted(async () => {
+  if (auth.isDirector || auth.isLeader) {
+    try { const res = await api.get('/users/', { params: { role: 'manager' } }); allManagers.value = res.data } catch (_) {}
+  }
   if (isEdit.value) {
     try {
       const res = await api.get(`/daily-notes/${route.params.id}`)
@@ -45,6 +52,7 @@ onMounted(async () => {
         category: n.category,
         content: n.content || '',
         time_range: n.time_range || '',
+        manager_id: n.manager_id || auth.userId || '',
       }
       timeRangeValue.value = parseTimeRange(n.time_range)
     } catch (_) {}
@@ -105,6 +113,13 @@ async function handleDelete() {
         <el-date-picker v-model="form.note_date" type="date" style="width:100%" />
       </el-form-item>
 
+      <el-form-item v-if="auth.isDirector || auth.isLeader">
+        <template #label><span class="form-label">客户经理</span></template>
+        <el-select v-model="form.manager_id" filterable placeholder="选择客户经理" style="width:100%">
+          <el-option v-for="m in allManagers" :key="m.id" :label="m.name" :value="m.id" />
+        </el-select>
+      </el-form-item>
+
       <el-form-item>
         <template #label>
           <span class="form-label">分类</span>