docs: add Pilot Protocol MCP guide

[TeoSlayer]

Summary

• add a concise Continue setup guide for the Pilot Protocol MCP server
• document the generated config.yaml entry and two verification prompts
• link the guide from the MCP cookbook index

Validation

• checked the setup command and YAML against the current Pilot Continue adapter
• git diff --check

Disclosure: I contribute to Pilot Protocol.

[github-actions]

Thank you for your submission, we really appreciate it. Like many open-source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution. You can sign the CLA by just posting a Pull Request Comment same as the below format.

---

I have read the CLA Document and I hereby sign the CLA

---

_{You can retrigger this bot by commenting recheck in this Pull Request. Posted by the CLA Assistant Lite bot.}

[TeoSlayer]

The JetBrains job failed during AnimMouse/setup-ffmpeg: the downloaded FFmpeg archive was not a valid xz stream. The documentation-only change does not touch JetBrains code; all lint, formatting, core, GUI, binary, VS Code, package, and Linux test checks passed. Please rerun that transient job when convenient.