fix: member status visibility, team creation improvements, join approval flow

- Fix other members' status not visible due to users collection viewRule restriction
- Fix empty status treated as 'away' instead of 'idle' in membersByStatus
- Auto-set creator to 'in_team' status when creating team session
- Filter current user from idle members invite list
- Fix group store isGroupOwner using pb.authStore instead of localStorage
- Add nginx no-cache headers for index.html
- Add join_requests collection migration and join approval flow
- Update groups collection rules and add requireApproval field
- Add Memory types for Phase 2 planning

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

frontend/src/components/team/IdleMembersList.vue

@@ -2,6 +2,7 @@
 <script setup lang="ts">
 import { computed } from 'vue'
 import { useGroupStore } from '@/stores/group'
+import { useUserStore } from '@/stores/user'
 import type { UserStatus } from '@/types'
 import { sendInvitation } from '@/api/invitations'
 import { ElMessage } from 'element-plus'
@@ -15,9 +16,10 @@ const props = withDefaults(defineProps<Props>(), {
 })
 
 const groupStore = useGroupStore()
+const userStore = useUserStore()
 
 const idleMembers = computed(() =>
-  groupStore.currentMembers.filter(m => m.status === props.status)
+  groupStore.currentMembers.filter(m => m.status === props.status && m.id !== userStore.userId)
 )
 
 async function inviteMember(userId: string, username: string) {

frontend/src/stores/group.ts

@@ -2,6 +2,7 @@
 import { defineStore } from 'pinia'
 import { ref, computed } from 'vue'
 import type { Group, User } from '@/types'
+import { pb } from '@/api/pocketbase'
 import { getUserGroups, getGroup, getGroupMembers } from '@/api/groups'
 
 export const useGroupStore = defineStore('group', () => {
@@ -14,8 +15,7 @@ export const useGroupStore = defineStore('group', () => {
   // 计算属性
   const currentGroupId = computed(() => currentGroup.value?.id || '')
   const isGroupOwner = computed(() => {
-    const userId = localStorage.getItem('userId')
-    return currentGroup.value?.owner === userId
+    return currentGroup.value?.owner === pb.authStore.model?.id
   })
 
   // 加载用户的群组列表

frontend/src/stores/team.ts

@@ -44,8 +44,15 @@ export const useTeamStore = defineStore('team', () => {
       const session = await createTeamSession(data)
       currentSession.value = session
 
-      // 发送邀请（排除创建者自己）
+      // 设置创建者状态为组队中
       const currentUserId = pb.authStore.model?.id
+      if (currentUserId) {
+        try {
+          await pb.collection('users').update(currentUserId, { status: 'in_team' })
+        } catch (_) {}
+      }
+
+      // 发送邀请（排除创建者自己）
       const others = data.members.filter(id => id !== currentUserId)
       if (others.length > 0) {
         await sendBulkInvitations(others, session.id)

frontend/src/types/index.ts

@@ -170,3 +170,24 @@ export interface JoinRequest {
     user?: User
   }
 }
+
+// 多媒体记忆类型 (二期规划)
+export type MemoryFileType = 'image' | 'video' | 'audio' | 'other'
+
+// 多媒体记忆 (二期规划)
+export interface Memory {
+  id: string
+  groupId: string
+  uploader: string
+  title: string
+  description?: string
+  file: string
+  fileType: MemoryFileType
+  size: number
+  created: string
+  updated: string
+  expand?: {
+    uploader?: User
+    group?: Group
+  }
+}

frontend/src/views/GroupView.vue

@@ -34,8 +34,9 @@ const membersByStatus = computed(() => {
     away: []
   }
   for (const m of members.value) {
-    if (groups[m.status]) {
-      groups[m.status].push(m)
+    const s = m.status || 'idle'
+    if (groups[s]) {
+      groups[s].push(m)
     } else {
       groups.away.push(m)
     }