Docs/agent setup copy prompt

[askadityapandey]

Summary

Adds a Copy prompt action to the Webcmd docs homepage so developers can ask their AI agent to install and configure Webcmd automatically.

The copied prompt points agents to:

https://webcmd.dev/docs/agent-setup.md

Changes

• Added the one-click setup prompt to the docs homepage.
• Added agent icons for Claude, Codex, Cursor, and OpenCode.
• Added agent-executable Webcmd installation and verification instructions.
• Kept the setup page hidden from sidebar navigation.
• Used Mintlify’s native copy control for reliable clipboard behavior.
• Added responsive light and dark theme styling.
• Shows “Prompt copied!” after clicking without changing the button color.

Verification

• Tested the homepage and copy interaction in the local Mintlify preview.
• Confirmed the setup page does not appear in sidebar navigation.
• Validated docs.json, SVG assets, and formatting.

[github-actions]

🟢 No documentation gap found — medium confidence

The automated review found no documentation gap in the supplied changes.

This review is advisory and does not block merging.