fix(acp): cap how long a pending tool call defers the idle watchdog - #1066

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683, actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065, actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/