headless-agents-ci-scaffold

Write a CI job that runs Claude Code, Gemini CLI, Codex, Grok Build and Antigravity headless against a project MCP server, giving each the permission setting it actually honours, asserting on the tool call rather than the exit code, and gating with pmcp project --check and pmcp doctor. Use when adding agent CLIs to CI, when a headless agent run skips an MCP tool call, or when a permission flag seems to do nothing. Not for interactive sessions or for writing the MCP server itself.