feat(mobile): stage 4 - group detail core (GroupViewMobile + activity/members tabs)

- migrate GroupViewMobile.vue (group header + quick entries + swipeable tabs)
- migrate ActivityFeedMobile.vue (team status + status-grouped members + create team popup)
- migrate MemberListMobile.vue (status groups + owner management: remove/approval/join requests)
- router: wire GroupView mobile view
- tabs structure: activity/members live; polls/bets/memories/stats use Placeholder
  pending stage 6/9 (sub-components not yet migrated)
- verified: sessions/group/user stores + groups/sessions/invitations APIs match uat

build verified: vue-tsc + vite build pass

frontend/src/components-mobile/group/ActivityFeedMobile.vue

@@ -0,0 +1,400 @@
+<!-- src/components-mobile/group/ActivityFeedMobile.vue -->
+<!-- 群组动态：当前组队状态 + 空闲成员 + 所有成员按状态分组 -->
+<script setup lang="ts">
+import { ref, computed } from 'vue'
+import { useGroupStore } from '@/stores/group'
+import { useTeamStore } from '@/stores/team'
+import { useUserStore } from '@/stores/user'
+import { useRouter } from 'vue-router'
+import { createTeamSession } from '@/api/sessions'
+import { sendBulkInvitations } from '@/api/invitations'
+import type { User } from '@/types'
+import { showSuccessToast, showFailToast } from 'vant'
+
+const props = defineProps<{ groupId: string }>()
+
+const groupStore = useGroupStore()
+const teamStore = useTeamStore()
+const userStore = useUserStore()
+const router = useRouter()
+
+const members = computed(() => groupStore.currentMembers)
+
+// 按状态分组
+const membersByStatus = computed(() => {
+  const groups: Record<string, User[]> = { idle: [], in_team: [], working: [], away: [] }
+  for (const m of members.value) {
+    const s = (m.status || 'idle') as keyof typeof groups
+    if (groups[s]) groups[s].push(m)
+    else groups.away.push(m)
+  }
+  return groups
+})
+
+const statusLabels: Record<string, string> = {
+  idle: '空闲',
+  in_team: '组队中',
+  working: '工作中',
+  away: '离开'
+}
+const statusColors: Record<string, string> = {
+  idle: 'var(--gg-success)',
+  in_team: 'var(--gg-info)',
+  working: 'var(--gg-danger)',
+  away: 'var(--gg-text-muted)'
+}
+
+// 发起组队
+const showCreateTeam = ref(false)
+const teamName = ref('')
+const teamGame = ref('')
+const selectedMembers = ref<string[]>([])
+const teamLoading = ref(false)
+
+const idleMembers = computed(() => membersByStatus.value.idle)
+
+async function handleCreateTeam() {
+  if (!teamGame.value.trim()) {
+    showFailToast('请输入游戏名称')
+    return
+  }
+  teamLoading.value = true
+  try {
+    const me = userStore.userId
+    const memberIds = [...new Set([me, ...selectedMembers.value])]
+    const session = await createTeamSession({
+      sourceGroup: props.groupId,
+      name: teamName.value.trim() || `${teamGame.value}小队`,
+      gameName: teamGame.value.trim(),
+      members: memberIds
+    })
+    // 邀请选中的成员
+    const toInvite = selectedMembers.value.filter(id => id !== me)
+    if (toInvite.length > 0 && session?.id) {
+      await sendBulkInvitations(toInvite, session.id)
+    }
+    await teamStore.loadActiveSession()
+    showCreateTeam.value = false
+    teamName.value = ''
+    teamGame.value = ''
+    selectedMembers.value = []
+    showSuccessToast('组队成功')
+  } catch (e: any) {
+    showFailToast(e.message || '组队失败')
+  } finally {
+    teamLoading.value = false
+  }
+}
+
+function toggleMember(id: string) {
+  const idx = selectedMembers.value.indexOf(id)
+  if (idx === -1) selectedMembers.value.push(id)
+  else selectedMembers.value.splice(idx, 1)
+}
+
+// 当前组队状态
+const hasSession = computed(() => !!teamStore.currentSession)
+const sessionInThisGroup = computed(() =>
+  teamStore.currentSession?.sourceGroup === props.groupId
+)
+
+function goVoiceRoom() {
+  const s = teamStore.currentSession
+  if (s) {
+    router.push({
+      name: 'VoiceRoom',
+      params: { groupId: s.sourceGroup, sessionId: s.id }
+    })
+  }
+}
+</script>
+
+<template>
+  <div class="activity-feed">
+    <!-- 当前组队卡片 -->
+    <div v-if="hasSession && sessionInThisGroup" class="current-team-card" @click="goVoiceRoom">
+      <div class="team-header">
+        <van-icon name="volume-o" />
+        <span class="team-label">进行中</span>
+      </div>
+      <div class="team-game">{{ teamStore.currentSession?.gameName }}</div>
+      <div class="team-meta">
+        {{ teamStore.currentSession?.name }} · {{ teamStore.currentSession?.members?.length || 0 }} 人
+      </div>
+      <div class="team-go">进入语音房 →</div>
+    </div>
+
+    <!-- 快速组队按钮 -->
+    <van-button
+      v-else
+      type="primary"
+      block
+      round
+      icon="plus"
+      @click="showCreateTeam = true"
+    >
+      发起组队
+    </van-button>
+
+    <!-- 成员状态分组 -->
+    <div class="members-section">
+      <div
+        v-for="(list, status) in membersByStatus"
+        :key="status"
+        v-show="list.length > 0"
+        class="status-group"
+      >
+        <div class="status-group-header">
+          <span class="status-dot" :style="{ background: statusColors[status] }" />
+          <span class="status-group-label">{{ statusLabels[status] }}</span>
+          <span class="status-group-count">{{ list.length }}</span>
+        </div>
+        <div class="member-list">
+          <div v-for="m in list" :key="m.id" class="member-item">
+            <img :src="m.avatar || '/default-avatar.svg'" class="member-avatar" alt="" />
+            <div class="member-info">
+              <div class="member-name">{{ m.name || m.username }}</div>
+              <div v-if="m.statusNote" class="member-note">{{ m.statusNote }}</div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+
+    <!-- 发起组队弹层 -->
+    <van-popup
+      v-model:show="showCreateTeam"
+      position="bottom"
+      round
+      closeable
+      :style="{ height: '75%' }"
+    >
+      <div class="popup-content">
+        <div class="popup-title">发起组队</div>
+        <van-cell-group inset>
+          <van-field v-model="teamGame" label="游戏" placeholder="玩什么游戏" required />
+          <van-field v-model="teamName" label="队名" placeholder="可选，默认游戏+小队" />
+        </van-cell-group>
+
+        <div class="invite-title">邀请成员（空闲：{{ idleMembers.length }}）</div>
+        <div class="invite-list">
+          <div
+            v-for="m in idleMembers.filter(x => x.id !== userStore.userId)"
+            :key="m.id"
+            class="invite-member"
+            :class="{ 'invite-selected': selectedMembers.includes(m.id) }"
+            @click="toggleMember(m.id)"
+          >
+            <img :src="m.avatar || '/default-avatar.svg'" class="invite-avatar" alt="" />
+            <span class="invite-name">{{ m.name || m.username }}</span>
+            <van-icon
+              v-if="selectedMembers.includes(m.id)"
+              name="success"
+              class="invite-check"
+            />
+          </div>
+          <div v-if="idleMembers.length <= 1" class="no-idle">暂无其他空闲成员</div>
+        </div>
+
+        <div class="popup-actions">
+          <van-button
+            type="primary"
+            block
+            round
+            :loading="teamLoading"
+            @click="handleCreateTeam"
+          >
+            开始组队
+          </van-button>
+        </div>
+      </div>
+    </van-popup>
+  </div>
+</template>
+
+<style scoped>
+.activity-feed {
+  padding: 12px;
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+}
+
+.current-team-card {
+  background: linear-gradient(135deg, var(--gg-primary), var(--gg-accent));
+  border-radius: var(--gg-radius-lg);
+  padding: 16px;
+  color: #fff;
+  box-shadow: 0 4px 16px rgba(5, 150, 105, 0.25);
+}
+
+.team-header {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  font-size: 12px;
+  opacity: 0.9;
+}
+
+.team-game {
+  font-size: 18px;
+  font-weight: 700;
+  margin-top: 6px;
+}
+
+.team-meta {
+  font-size: 13px;
+  opacity: 0.85;
+  margin-top: 4px;
+}
+
+.team-go {
+  text-align: right;
+  font-size: 13px;
+  margin-top: 8px;
+  font-weight: 500;
+}
+
+.members-section {
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+}
+
+.status-group-header {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  padding: 0 2px 8px;
+}
+
+.status-dot {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+}
+
+.status-group-label {
+  font-size: 14px;
+  font-weight: 600;
+  color: var(--gg-text);
+}
+
+.status-group-count {
+  font-size: 12px;
+  color: var(--gg-text-muted);
+  background: var(--gg-bg-elevated);
+  padding: 1px 8px;
+  border-radius: 10px;
+}
+
+.member-list {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+}
+
+.member-item {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  background: var(--gg-bg-card);
+  padding: 6px 10px 6px 6px;
+  border-radius: var(--gg-radius-sm);
+  box-shadow: var(--gg-shadow);
+}
+
+.member-avatar {
+  width: 28px;
+  height: 28px;
+  border-radius: 50%;
+  object-fit: cover;
+}
+
+.member-info {
+  min-width: 0;
+}
+
+.member-name {
+  font-size: 13px;
+  color: var(--gg-text);
+}
+
+.member-note {
+  font-size: 11px;
+  color: var(--gg-text-muted);
+}
+
+/* 弹层 */
+.popup-content {
+  padding: 16px 0 24px;
+  display: flex;
+  flex-direction: column;
+  height: 100%;
+  overflow-y: auto;
+}
+
+.popup-title {
+  text-align: center;
+  font-size: 16px;
+  font-weight: 600;
+  padding: 8px 0 16px;
+  color: var(--gg-text);
+}
+
+.invite-title {
+  padding: 16px 16px 8px;
+  font-size: 14px;
+  font-weight: 600;
+  color: var(--gg-text);
+}
+
+.invite-list {
+  padding: 0 16px;
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+}
+
+.invite-member {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  padding: 6px 10px;
+  background: var(--gg-bg);
+  border-radius: var(--gg-radius-sm);
+  border: 1px solid var(--gg-border);
+}
+
+.invite-member.invite-selected {
+  background: rgba(5, 150, 105, 0.1);
+  border-color: var(--gg-primary);
+}
+
+.invite-avatar {
+  width: 24px;
+  height: 24px;
+  border-radius: 50%;
+  object-fit: cover;
+}
+
+.invite-name {
+  font-size: 13px;
+  color: var(--gg-text);
+}
+
+.invite-check {
+  color: var(--gg-primary);
+  font-size: 14px;
+}
+
+.no-idle {
+  font-size: 13px;
+  color: var(--gg-text-muted);
+  padding: 8px 0;
+}
+
+.popup-actions {
+  padding: 20px 16px 0;
+}
+</style>

frontend/src/components-mobile/group/MemberListMobile.vue

@@ -0,0 +1,315 @@
+<!-- src/components-mobile/group/MemberListMobile.vue -->
+<!-- 群组成员列表：按状态展示 + 群主管理（移除成员、审核开关、入群申请） -->
+<script setup lang="ts">
+import { ref, computed, onMounted } from 'vue'
+import { useGroupStore } from '@/stores/group'
+import { useUserStore } from '@/stores/user'
+import { getGroupJoinRequests, updateGroupApproval } from '@/api/groups'
+import { respondJoinRequest } from '@/api/groups'
+import { pb } from '@/api/pocketbase'
+import type { JoinRequest, User } from '@/types'
+import { showSuccessToast, showFailToast, showConfirmDialog } from 'vant'
+
+const props = defineProps<{ groupId: string }>()
+
+const groupStore = useGroupStore()
+const userStore = useUserStore()
+
+const group = computed(() => groupStore.currentGroup)
+const members = computed(() => groupStore.currentMembers)
+const isOwner = computed(() => group.value?.owner === userStore.userId)
+
+const joinRequests = ref<JoinRequest[]>([])
+
+onMounted(async () => {
+  if (isOwner.value && group.value) {
+    try {
+      joinRequests.value = await getGroupJoinRequests(group.value.id)
+    } catch { /* ignore */ }
+  }
+})
+
+// 按状态分组
+const membersByStatus = computed(() => {
+  const groups: Record<string, User[]> = { idle: [], in_team: [], working: [], away: [] }
+  for (const m of members.value) {
+    const s = (m.status || 'idle') as keyof typeof groups
+    if (groups[s]) groups[s].push(m)
+    else groups.away.push(m)
+  }
+  return groups
+})
+
+const statusLabels: Record<string, string> = { idle: '空闲', in_team: '组队中', working: '工作中', away: '离开' }
+const statusColors: Record<string, string> = {
+  idle: 'var(--gg-success)', in_team: 'var(--gg-info)',
+  working: 'var(--gg-danger)', away: 'var(--gg-text-muted)'
+}
+
+// 移除成员（群主）
+async function removeMember(userId: string, name: string) {
+  if (!isOwner.value || !group.value) return
+  showConfirmDialog({
+    title: '移除成员',
+    message: `确定要将 ${name} 移出群组吗？`
+  }).then(async () => {
+    try {
+      const newMembers = group.value!.members.filter(id => id !== userId)
+      await pb.collection('groups').update(group.value!.id, { members: newMembers })
+      await groupStore.setCurrentGroup(group.value!.id)
+      showSuccessToast('已移除')
+    } catch (e: any) {
+      showFailToast(e.message || '操作失败')
+    }
+  }).catch(() => {})
+}
+
+// 审核开关
+async function toggleApproval(val: boolean) {
+  if (!group.value) return
+  try {
+    await updateGroupApproval(group.value.id, val)
+    await groupStore.setCurrentGroup(group.value.id)
+    showSuccessToast(val ? '已开启审核' : '已关闭审核')
+  } catch (e: any) {
+    showFailToast('更新失败')
+  }
+}
+
+// 处理入群申请
+const requestLoading = ref<string | null>(null)
+async function handleRequest(requestId: string, status: 'approved' | 'rejected') {
+  requestLoading.value = requestId
+  try {
+    await respondJoinRequest(requestId, status)
+    joinRequests.value = joinRequests.value.filter(r => r.id !== requestId)
+    await groupStore.setCurrentGroup(props.groupId)
+    showSuccessToast(status === 'approved' ? '已通过' : '已拒绝')
+  } catch (e: any) {
+    showFailToast(e.message || '操作失败')
+  } finally {
+    requestLoading.value = null
+  }
+}
+</script>
+
+<template>
+  <div class="member-list-mobile">
+    <!-- 群主管理区 -->
+    <div v-if="isOwner" class="owner-panel">
+      <!-- 入群申请 -->
+      <div v-if="joinRequests.length > 0" class="requests-block">
+        <div class="block-title">入群申请（{{ joinRequests.length }}）</div>
+        <div
+          v-for="req in joinRequests"
+          :key="req.id"
+          class="request-item"
+        >
+          <img
+            :src="req.expand?.user?.avatar || '/default-avatar.svg'"
+            class="req-avatar"
+            alt=""
+          />
+          <div class="req-info">
+            <div class="req-name">{{ req.expand?.user?.name || req.expand?.user?.username }}</div>
+          </div>
+          <div class="req-actions">
+            <van-button
+              type="primary"
+              size="mini"
+              round
+              :loading="requestLoading === req.id"
+              @click="handleRequest(req.id, 'approved')"
+            >通过</van-button>
+            <van-button
+              size="mini"
+              round
+              :loading="requestLoading === req.id"
+              @click="handleRequest(req.id, 'rejected')"
+            >拒绝</van-button>
+          </div>
+        </div>
+      </div>
+
+      <!-- 审核开关 -->
+      <van-cell-group inset>
+        <van-cell title="加入审核" center>
+          <template #right-icon>
+            <van-switch
+              :model-value="group?.requireApproval"
+              size="22px"
+              @update:model-value="toggleApproval"
+            />
+          </template>
+        </van-cell>
+      </van-cell-group>
+    </div>
+
+    <!-- 成员分组列表 -->
+    <div
+      v-for="(list, status) in membersByStatus"
+      :key="status"
+      v-show="list.length > 0"
+      class="status-section"
+    >
+      <div class="status-header">
+        <span class="status-dot" :style="{ background: statusColors[status] }" />
+        <span class="status-label">{{ statusLabels[status] }}</span>
+        <span class="status-count">{{ list.length }}</span>
+      </div>
+      <div class="members-grid">
+        <div
+          v-for="m in list"
+          :key="m.id"
+          class="member-card"
+        >
+          <img :src="m.avatar || '/default-avatar.svg'" class="member-avatar" alt="" />
+          <div class="member-info">
+            <div class="member-name">
+              {{ m.name || m.username }}
+              <van-tag v-if="m.id === group?.owner" type="warning" size="medium">群主</van-tag>
+            </div>
+            <div v-if="m.statusNote" class="member-note">{{ m.statusNote }}</div>
+          </div>
+          <van-button
+            v-if="isOwner && m.id !== group?.owner && m.id !== userStore.userId"
+            size="mini"
+            plain
+            type="danger"
+            @click="removeMember(m.id, m.name || m.username)"
+          >移除</van-button>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.member-list-mobile {
+  padding: 12px;
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+}
+
+.owner-panel {
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+}
+
+.block-title {
+  font-size: 13px;
+  font-weight: 600;
+  color: var(--gg-text-muted);
+  margin-bottom: 8px;
+  padding: 0 4px;
+}
+
+.request-item {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  background: var(--gg-bg-card);
+  padding: 10px 12px;
+  border-radius: var(--gg-radius-sm);
+  margin-bottom: 8px;
+  box-shadow: var(--gg-shadow);
+}
+
+.req-avatar {
+  width: 36px;
+  height: 36px;
+  border-radius: 50%;
+  object-fit: cover;
+}
+
+.req-info {
+  flex: 1;
+  min-width: 0;
+}
+
+.req-name {
+  font-size: 14px;
+  font-weight: 500;
+  color: var(--gg-text);
+}
+
+.req-actions {
+  display: flex;
+  gap: 6px;
+}
+
+.status-section {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.status-header {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  padding: 0 4px;
+}
+
+.status-dot {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+}
+
+.status-label {
+  font-size: 14px;
+  font-weight: 600;
+  color: var(--gg-text);
+}
+
+.status-count {
+  font-size: 12px;
+  color: var(--gg-text-muted);
+}
+
+.members-grid {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.member-card {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  background: var(--gg-bg-card);
+  padding: 10px 12px;
+  border-radius: var(--gg-radius-sm);
+  box-shadow: var(--gg-shadow);
+}
+
+.member-avatar {
+  width: 40px;
+  height: 40px;
+  border-radius: 50%;
+  object-fit: cover;
+}
+
+.member-info {
+  flex: 1;
+  min-width: 0;
+}
+
+.member-name {
+  font-size: 14px;
+  font-weight: 500;
+  color: var(--gg-text);
+  display: flex;
+  align-items: center;
+  gap: 4px;
+}
+
+.member-note {
+  font-size: 12px;
+  color: var(--gg-text-muted);
+  margin-top: 2px;
+}
+</style>

frontend/src/router/index.ts

@@ -80,7 +80,7 @@ const routes: RouteRecordRaw[] = [
         name: 'GroupView',
         component: view(
           () => import('@/views/GroupView.vue'),
-          mobilePlaceholder
+          () => import('@/views-mobile/GroupViewMobile.vue')
         ),
         props: true
       },

frontend/src/views-mobile/GroupViewMobile.vue

@@ -0,0 +1,230 @@
+<!-- src/views-mobile/GroupViewMobile.vue -->
+<!-- 手机端群组详情：群信息 + 可横滑标签栏 -->
+<!-- 标签：动态/投票/竞猜/回忆/成员/账本/资产/黑名单/统计 + [阶段10]公示板 + [阶段11]活动 -->
+<script setup lang="ts">
+import { ref, computed, onMounted, onUnmounted } from 'vue'
+import { useRoute, useRouter } from 'vue-router'
+import { useGroupStore } from '@/stores/group'
+import { pb } from '@/api/pocketbase'
+import ActivityFeedMobile from '@/components-mobile/group/ActivityFeedMobile.vue'
+import MemberListMobile from '@/components-mobile/group/MemberListMobile.vue'
+import Placeholder from '@/views-mobile/Placeholder.vue'
+import { Wallet, Box, Warning } from '@element-plus/icons-vue'
+
+const route = useRoute()
+const router = useRouter()
+const groupStore = useGroupStore()
+
+const groupId = route.params.id as string
+
+const activeTab = ref(route.query.tab as string || 'activity')
+
+const group = computed(() => groupStore.currentGroup)
+const members = computed(() => groupStore.currentMembers)
+
+const ownerName = computed(() => {
+  const owner = members.value.find(m => m.id === group.value?.owner)
+  return owner?.name || owner?.username || '未知'
+})
+
+const unsubFns: (() => Promise<void>)[] = []
+
+async function loadGroup() {
+  await groupStore.setCurrentGroup(groupId)
+}
+
+onMounted(async () => {
+  await loadGroup()
+  // 订阅群组、成员、会话变更
+  try {
+    unsubFns.push(await pb.collection('users').subscribe('*', () => loadGroup()))
+    unsubFns.push(await pb.collection('groups').subscribe('*', (payload) => {
+      if (payload.record.id === groupId) loadGroup()
+    }))
+  } catch (e) {
+    console.error('订阅失败:', e)
+  }
+})
+
+onUnmounted(async () => {
+  for (const fn of unsubFns) {
+    try { await fn() } catch { /* ignore */ }
+  }
+})
+
+// 标签配置
+// 注：polls/bets/memories/stats 子组件阶段 6/9 迁移后接入；
+//     bulletin/events 阶段 10/11 新增
+const tabs = [
+  { name: 'activity', label: '动态' },
+  { name: 'polls', label: '投票' },
+  { name: 'bets', label: '竞猜' },
+  { name: 'members', label: '成员' },
+  { name: 'memories', label: '回忆' },
+  { name: 'stats', label: '统计' },
+]
+
+function onTabChange(name: string) {
+  activeTab.value = name
+}
+
+// 跳转群组级独立页面
+function goLedger() {
+  router.push({ name: 'LedgerView', params: { groupId } })
+}
+function goAssets() {
+  router.push({ name: 'AssetView', params: { groupId } })
+}
+function goBlacklist() {
+  router.push({ name: 'BlacklistView', params: { groupId } })
+}
+</script>
+
+<template>
+  <div class="group-view-mobile">
+    <!-- 群信息条 -->
+    <div class="group-header">
+      <div class="header-row">
+        <h1 class="group-name">{{ group?.name || '加载中...' }}</h1>
+        <van-tag type="success" size="large">{{ members.length }} 人</van-tag>
+      </div>
+      <p class="group-desc">{{ group?.description || '暂无群组简介' }}</p>
+      <div class="header-meta">
+        <span class="meta-text">群主: {{ ownerName }}</span>
+        <span class="meta-divider">·</span>
+        <span class="meta-text">{{ members.length }}/{{ group?.maxMembers || '-' }}</span>
+      </div>
+      <!-- 快捷入口 -->
+      <div class="quick-entry">
+        <div class="entry-item" @click="goLedger">
+          <el-icon><Wallet /></el-icon>
+          <span>账本</span>
+        </div>
+        <div class="entry-item" @click="goAssets">
+          <el-icon><Box /></el-icon>
+          <span>资产</span>
+        </div>
+        <div class="entry-item" @click="goBlacklist">
+          <el-icon><Warning /></el-icon>
+          <span>黑名单</span>
+        </div>
+      </div>
+    </div>
+
+    <!-- 可横滑标签栏 -->
+    <van-tabs
+      v-model:active="activeTab"
+      class="group-tabs"
+      line-width="20"
+      @change="onTabChange"
+    >
+      <van-tab v-for="tab in tabs" :key="tab.name" :name="tab.name" :title="tab.label">
+        <div class="tab-content">
+          <!-- 阶段 4 已迁移 -->
+          <ActivityFeedMobile v-if="activeTab === 'activity'" :group-id="groupId" />
+          <MemberListMobile v-else-if="activeTab === 'members'" :group-id="groupId" />
+          <!-- 以下 tab 子组件在阶段 6/9 迁移后接入，现暂用占位 -->
+          <Placeholder v-else />
+        </div>
+      </van-tab>
+    </van-tabs>
+  </div>
+</template>
+
+<style scoped>
+.group-view-mobile {
+  display: flex;
+  flex-direction: column;
+  min-height: 100vh;
+}
+
+/* 群信息条 */
+.group-header {
+  background: var(--gg-bg-card);
+  padding: 16px;
+  box-shadow: var(--gg-shadow);
+  position: relative;
+  overflow: hidden;
+}
+
+.group-header::before {
+  content: '';
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  height: 3px;
+  background: var(--gg-gradient);
+}
+
+.header-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+}
+
+.group-name {
+  font-size: 20px;
+  font-weight: 700;
+  color: var(--gg-text);
+  margin: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.group-desc {
+  font-size: 13px;
+  color: var(--gg-text-muted);
+  margin: 8px 0;
+  line-height: 1.5;
+}
+
+.header-meta {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  font-size: 12px;
+  color: var(--gg-text-secondary);
+}
+
+.meta-divider {
+  color: var(--gg-text-muted);
+}
+
+.quick-entry {
+  display: flex;
+  gap: 8px;
+  margin-top: 14px;
+  padding-top: 14px;
+  border-top: 1px solid var(--gg-border);
+}
+
+.entry-item {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 4px;
+  padding: 8px;
+  background: var(--gg-bg);
+  border-radius: var(--gg-radius-sm);
+  font-size: 12px;
+  color: var(--gg-text-secondary);
+}
+
+.entry-item:active {
+  opacity: 0.7;
+}
+
+.entry-item .el-icon {
+  font-size: 20px;
+  color: var(--gg-primary);
+}
+
+/* 标签内容 */
+.tab-content {
+  min-height: 50vh;
+}
+</style>