Publish Cua Driver plugin to the Grok Build marketplace

[f-trycua]

Goal

Submit the canonical Cua Driver agent plugin to the Grok Build marketplace after the implementation PR merges.

Source

Use libs/cua-driver/plugins/cua-driver from a pinned commit. Keep the Grok catalog entry thin and reuse the shared skill and local stdio MCP configuration.

Acceptance criteria

• Recheck the current xAI marketplace submission schema and policy at submission time.
• Validate the .grok-plugin/plugin.json, Claude-compatible package layout, and .mcp.json with the current Grok CLI.
• Confirm the distributable contains no download-and-execute installer commands, hooks, secret access, or public desktop-control endpoint.
• Submit a catalog entry pinned to the merged commit or released component tag.
• Test install, fresh-session discovery, cua-driver mcp startup, one read-only tool call, and uninstall.
• Add the final marketplace installation flow to the Grok Build documentation.

Dependency

Blocked until the cross-marketplace plugin implementation PR is merged.