本次改动： - 多方块牌桌：最多 9 格，拼接后共享同一牌局、配置和押注，牌与筹码显示在整桌中心。 - 公共编辑：取消永久房主，任何附近玩… - #4

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-java@v4, gradle/actions/setup-gradle@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/