feat(im): fuzzy member search with chip tags in create-group dialog

- ImManagementView: replace textarea with debounced search input + closable el-tag chips
- im.ts: add searchUsers(keyword) API call to im-service admin search endpoint

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tenant-platform/src/api/im.ts

@@ -73,4 +73,11 @@ export const imAdminApi = {
       { params: { appId } },
     )
   },
+
+  searchUsers(appId: string, keyword: string, size = 20) {
+    return imClient.get<{ data: ImUser[] }>(
+      '/api/im/admin/users/search',
+      { params: { appId, keyword, size } },
+    )
+  },
 }

tenant-platform/src/views/im/ImManagementView.vue

@@ -97,13 +97,47 @@
     </el-dialog>
 
     <!-- Create Group Dialog -->
-    <el-dialog v-model="showCreateGroup" title="创建群组" width="420px">
+    <el-dialog v-model="showCreateGroup" title="创建群组" width="480px" @closed="resetCreateGroupForm">
       <el-form :model="createGroupForm" label-width="90px">
         <el-form-item label="群名称"><el-input v-model="createGroupForm.name" /></el-form-item>
         <el-form-item label="创建者ID"><el-input v-model="createGroupForm.creatorId" /></el-form-item>
-        <el-form-item label="初始成员">
-          <el-input v-model="createGroupForm.memberIdsRaw" type="textarea" :rows="3"
-            placeholder="每行一个用户ID" />
+        <el-form-item label="搜索成员">
+          <el-input
+            v-model="memberSearchKeyword"
+            :prefix-icon="Search"
+            placeholder="输入昵称或用户ID搜索"
+            clearable
+            @input="onMemberSearchInput"
+          />
+          <!-- Search results list -->
+          <div v-if="memberSearchResults.length > 0" class="search-results">
+            <div
+              v-for="user in memberSearchResults"
+              :key="user.userId"
+              class="search-result-item"
+              @click="addMember(user)"
+            >
+              <span class="result-nickname">{{ user.nickname || user.userId }}</span>
+              <span class="result-userid">{{ user.userId }}</span>
+            </div>
+          </div>
+          <el-empty v-else-if="memberSearchKeyword && !searchingMembers && memberSearchResults.length === 0"
+            description="未找到匹配用户" :image-size="48" style="padding:8px 0" />
+        </el-form-item>
+        <el-form-item label="已选成员">
+          <div class="selected-members">
+            <el-tag
+              v-for="m in selectedMembers"
+              :key="m.userId"
+              closable
+              type="primary"
+              style="margin:3px"
+              @close="removeMember(m.userId)"
+            >
+              {{ m.nickname || m.userId }}
+            </el-tag>
+            <span v-if="selectedMembers.length === 0" class="no-members-hint">暂未选择成员</span>
+          </div>
         </el-form-item>
       </el-form>
       <template #footer>
@@ -118,6 +152,7 @@
 import { ref, computed, onMounted } from 'vue'
 import { useRoute } from 'vue-router'
 import { ElMessage, ElMessageBox } from 'element-plus'
+import { Search } from '@element-plus/icons-vue'
 import { imAdminApi, type ImUser, type ImGroup, type ImStats } from '@/api/im'
 
 const route = useRoute()
@@ -141,7 +176,55 @@ const registerForm = ref({ userId: '', nickname: '' })
 
 const showCreateGroup = ref(false)
 const submittingCreateGroup = ref(false)
-const createGroupForm = ref({ name: '', creatorId: '', memberIdsRaw: '' })
+const createGroupForm = ref({ name: '', creatorId: '' })
+
+// Member fuzzy search
+const memberSearchKeyword = ref('')
+const memberSearchResults = ref<ImUser[]>([])
+const searchingMembers = ref(false)
+const selectedMembers = ref<ImUser[]>([])
+let memberSearchTimer: ReturnType<typeof setTimeout> | null = null
+
+function onMemberSearchInput() {
+  if (memberSearchTimer) clearTimeout(memberSearchTimer)
+  const kw = memberSearchKeyword.value.trim()
+  if (!kw) {
+    memberSearchResults.value = []
+    return
+  }
+  memberSearchTimer = setTimeout(async () => {
+    searchingMembers.value = true
+    try {
+      const res = await imAdminApi.searchUsers(appId, kw)
+      // Exclude already-selected members from results
+      const selectedIds = new Set(selectedMembers.value.map(m => m.userId))
+      memberSearchResults.value = res.data.data.filter(u => !selectedIds.has(u.userId))
+    } catch {
+      memberSearchResults.value = []
+    } finally {
+      searchingMembers.value = false
+    }
+  }, 300)
+}
+
+function addMember(user: ImUser) {
+  if (!selectedMembers.value.find(m => m.userId === user.userId)) {
+    selectedMembers.value.push(user)
+  }
+  memberSearchResults.value = memberSearchResults.value.filter(u => u.userId !== user.userId)
+  memberSearchKeyword.value = ''
+}
+
+function removeMember(userId: string) {
+  selectedMembers.value = selectedMembers.value.filter(m => m.userId !== userId)
+}
+
+function resetCreateGroupForm() {
+  createGroupForm.value = { name: '', creatorId: '' }
+  memberSearchKeyword.value = ''
+  memberSearchResults.value = []
+  selectedMembers.value = []
+}
 
 const statCards = computed(() => [
   { label: '注册用户', value: stats.value?.totalUsers ?? '-' },
@@ -226,12 +309,10 @@ async function submitCreateGroup() {
   }
   submittingCreateGroup.value = true
   try {
-    const memberIds = createGroupForm.value.memberIdsRaw
-      .split('\n').map(s => s.trim()).filter(Boolean)
+    const memberIds = selectedMembers.value.map(m => m.userId)
     await imAdminApi.createGroup(appId, createGroupForm.value.name, createGroupForm.value.creatorId, memberIds)
     ElMessage.success('群组创建成功')
     showCreateGroup.value = false
-    createGroupForm.value = { name: '', creatorId: '', memberIdsRaw: '' }
     loadGroups()
     loadStats()
   } catch {
@@ -252,4 +333,34 @@ onMounted(() => {
 .stat-value { font-size: 28px; font-weight: 800; color: #1f2933; }
 .stat-label { font-size: 13px; color: #6b7280; }
 .toolbar { margin-bottom: 12px; }
+
+.search-results {
+  width: 100%;
+  margin-top: 4px;
+  border: 1px solid #e4e7ed;
+  border-radius: 4px;
+  max-height: 180px;
+  overflow-y: auto;
+  background: #fff;
+}
+.search-result-item {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 7px 12px;
+  cursor: pointer;
+  transition: background 0.15s;
+}
+.search-result-item:hover { background: #f0f4ff; }
+.result-nickname { font-weight: 500; color: #303133; }
+.result-userid { font-size: 12px; color: #909399; }
+
+.selected-members {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  min-height: 32px;
+  width: 100%;
+}
+.no-members-hint { font-size: 13px; color: #c0c4cc; }
 </style>