feat: complete Phase 1 - game library, lifecycle, realtime sync

- Seed 33 popular games across 5 platforms via admin API script
- Add GameDetailDialog with game info and quick-team button
- Update GamesLibrary with game card click to open detail dialog
- Update Home hot games to open detail dialog instead of navigating
- Rewrite invitation accept: frontend auto-joins team + updates status
- Add user status reset on team dissolution (endGame)
- Add start game / dissolve buttons to TeamSessionPanel lifecycle
- Integrate realtime subscriptions in GroupView and Layout
- Add notification store realtime invitation listener
- Add placeholder images for game covers and avatars
- Remove Go hooks, add JS hooks placeholder + Docker mount

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

frontend/src/api/invitations.ts

@@ -77,8 +77,29 @@ export async function respondInvitation(
     updateData.rejectReason = rejectReason
   }
 
-  // 后端 hook 会自动处理：加入 team members + 更新用户状态
+  // 更新邀请状态
   await pb.collection('invitations').update(invitationId, updateData)
+
+  // 接受邀请：前端处理加入 team session + 更新用户状态
+  if (response === 'accepted') {
+    const user = pb.authStore.model
+    if (!user) return
+
+    // 获取邀请详情以找到 team session
+    const invitation = await pb.collection('invitations').getOne(invitationId) as any
+    const teamSessionId = invitation.teamSession
+
+    // 加入 team session
+    const session = await pb.collection('team_sessions').getOne(teamSessionId) as any
+    const members: string[] = session.members || []
+    if (!members.includes(user.id)) {
+      members.push(user.id)
+      await pb.collection('team_sessions').update(teamSessionId, { members })
+    }
+
+    // 更新用户状态为 in_team
+    await pb.collection('users').update(user.id, { status: 'in_team' })
+  }
 }
 
 // 订阅邀请变更

frontend/src/api/sessions.ts

@@ -49,9 +49,23 @@ export async function updateTeamStatus(sessionId: string, status: TeamStatus): P
   return pb.collection('team_sessions').update(sessionId, updateData) as unknown as TeamSession
 }
 
-// 结束游戏（解散临时小组）
+// 结束游戏（解散临时小组 + 重置成员状态）
 export async function endGame(sessionId: string) {
-  return updateTeamStatus(sessionId, 'dissolved')
+  const session = await pb.collection('team_sessions').getOne(sessionId) as any
+  const members: string[] = session.members || []
+
+  // 解散临时小组
+  await updateTeamStatus(sessionId, 'dissolved')
+
+  // 重置所有成员状态为 idle
+  for (const memberId of members) {
+    try {
+      const user = await pb.collection('users').getOne(memberId) as any
+      if (user && user.status === 'in_team') {
+        await pb.collection('users').update(memberId, { status: 'idle' })
+      }
+    } catch (_) {}
+  }
 }
 
 // 加入临时小组