Add cursor-doctor - Cursor AI IDE config linter

[nedcodes-ok]

This PR adds cursor-doctor, a health scanner and diagnostic tool for Cursor AI IDE configuration files (.cursor/rules/).

Tool details:

• GitHub: https://github.com/nedcodes-ok/cursor-doctor
• npm: https://www.npmjs.com/package/cursor-doctor
• License: MIT
• Install: npx cursor-doctor scan

Features:

• Scans for broken YAML frontmatter
• Detects rule conflicts and redundancies
• Identifies missing alwaysApply fields
• Checks token budget issues
• Analyzes stack coverage gaps

The tool is actively maintained, has CLI + VS Code extension, and meets the requirements (>20 stars, active development).

[mre]

Thanks for your submission. The project has not reached all requirements for addition yet:

Each tool on the list needs to be

• actively maintained (have more than one contributor)
• actively used (have more than 20 stars on GitHub or similar impact)
• relatively mature (project exists for three months or longer)

We can keep this pull request open in the meantime.