Replace all-themes bat logic with PowerShell to survive branch checkout; add api-admin and full-themes service modes; fix bat findstr path check and cmd exit codes; document six-in-one tar and update gitignore for player/full-themes artifacts.
汇总多 player 容器部署、分支同步、发版流程及后台按主题生成邀请链接的阶段 F 设计,便于下次直接实施。