release v0.11.0-rc.0: feat: 0.11.0-rc.0 — 存活仲裁重构 + 记忆/认知机制重构 + Team Chat 流式可靠性 + 多项 P0 修复 - #334

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-node@v4, pnpm/action-setup@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/