feat(deploy): add Docker full-stack deployment and server pack scripts

Enable one-click production deploy via docker-compose.prod.yml, with deployment docs and zip packaging for Baota upload.

Co-authored-by: Cursor <cursoragent@cursor.com>

.env.docker.example

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+# 复制为 .env.docker 后修改
+# cp .env.docker.example .env.docker
+
+# PostgreSQL（生产务必修改）
+POSTGRES_PASSWORD=thebet365
+
+# JWT（生产务必修改）
+JWT_SECRET=change-me-in-production-use-long-random-string
+JWT_PLAYER_EXPIRES=24h
+JWT_ADMIN_EXPIRES=2h
+JWT_AGENT_EXPIRES=8h
+
+# 首次部署写入演示账号与默认数据，完成后改为 false
+SEED_DATABASE=true
+
+# 对外端口（宝塔/Nginx 反代时可改回 80/443 或保留以下端口）
+API_PORT=3000
+PLAYER_PORT=8080
+ADMIN_PORT=8081