* feat: Add security and OWASP instructions
This adds a new instruction file for secure coding practices based on the OWASP Top 10 to guide GitHub Copilot in generating more secure code.
* fix: add YAML front matter to security instructions and correct README link casing
* chore: update README.md after running update-readme.js
* feat: add the most comprehensive, practical, and engineer-authored performance optimization instructions. Covers frontend, backend, and database best practices with actionable guidance, scenario-based checklists, troubleshooting, and pro tips. Updates README.md to include this new resource.
* Apply suggestion from @aaronpowell
* Apply suggestion from @aaronpowell
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Co-authored-by: Aaron Powell <me@aaron-powell.com>
