Add flightclaw

[jackculpan]

Adds one line to Grok Bot plugins and MCP servers, placed alphabetically between campfiresms-grok-bot and GrokBotfun.

- [flightclaw](https://github.com/jackculpan/flightclaw) by [Jack Culpan](https://github.com/jackculpan) — search Google Flights, price-track a route and book through Duffel, over one MCP server. **[beta]**

Against the acceptance bar

1. The link resolves. https://github.com/jackculpan/flightclaw — public, active, not archived.
2. It is about Grok Bot. It ships .grok-plugin/plugin.json plus a .mcp.json connector, which is mechanism 1 in your extension section. It is submitted to xAI's official marketplace as xai-org/plugin-marketplace#529, currently open. Not Grok Build, not the Grok chat assistant.
3. Not already listed.
4. Category. It is a plugin with an MCP server, so "Grok Bot plugins and MCP servers" rather than skills.

On the beta tag

The server works and lists 32 tools, but the Grok install path depends on marketplace PR #529 landing. beta seemed more honest than production until that merges. Happy to move it to production once it does, or to have you set it now if you read it differently.

Coverage-table note

If it helps your .cursor-plugin / .claude-plugin rows: this repo also carries .cursor-plugin/plugin.json (validated against Cursor's published schemas), .claude-plugin/plugin.json, and gemini-extension.json. No plugin.json on the open Agent Plugins standard yet.

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