fix(orchestrate),feat(wiki): cmd_send pasted-text guard, $TMUX-gated status writes + failed-reset playbook, wiki gap seeds G1–G6 (#96, #97, #38) - #108

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. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/