refactor(deploy): separate Dev/UAT into independent full-stack environments

- Each environment now runs its own PB + LiveKit + Voice Token + frontend
- UAT LiveKit: 7890, Voice Token: 7893 (separate from Dev 7880/7883)
- Remove docker-compose.backend.yml, merge into dev compose
- Delete duplicate bulletin migration files that caused PB crash on startup
- Update CLAUDE.md, nginx configs, and .env files accordingly

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

deploy-uat.sh

@@ -1,12 +1,20 @@
 #!/bin/bash
-# 部署 UAT 前端
+# 部署 UAT 全套环境（PocketBase + LiveKit + voice-token + 前端）
 
-echo "🚀 部署 UAT 前端..."
+echo "🚀 部署 UAT 环境..."
 
 # 确保网络存在
 docker network create gamegroup-net 2>/dev/null || true
 
+# 先停掉旧容器（含已改名的 livekit / voice-token）
+docker rm -f gamegroup-livekit gamegroup-voice-token 2>/dev/null || true
+
 docker compose -f docker-compose.uat.yml up -d --build --force-recreate
 
+echo ""
 echo "✅ UAT 环境已启动"
-echo "🌐 访问地址: http://192.168.1.14:7034"
+echo "🌐 前端:     http://192.168.1.14:7034"
+echo "📡 PB API:   http://192.168.1.14:8712/api/"
+echo "🔧 PB 管理面板: http://192.168.1.14:8712/_/"
+echo "🎙️ LiveKit:  ws://192.168.1.14:7890"
+echo "🔑 Token:    http://192.168.1.14:7893"