Add SKILL.md for Claude Desktop based on prd-creator-3-25.md custom instructions#1

Spiceman161 wants to merge 2 commits into

mainSpiceman161/PRD-maker:mainfrom

claude/create-skill-md-file-011CUrdwWpU6RCSPKmmkmgyVSpiceman161/PRD-maker:claude/create-skill-md-file-011CUrdwWpU6RCSPKmmkmgyVCopy head branch name to clipboard