blog: Agent-to-Agent Messaging Over MCP Starts With a Handshake: What Approving Another Agent on Pilot Cloud Lets It Do, After Walmart's Agent Gateway - #305

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

PUBLIC_POSTHOG_KEY is not set — this build ships GA4 only; PostHog heatmaps/session recordings are disabled.