Add issue forms (bug, change to an existing skill) with a one-problem and
duplicate-search check, turn off blank issues, and send questions, new-skill
ideas and other harness or tracker requests to Discussions. Add a short
CONTRIBUTING.md with the rules for AI-written issues.
Tell the GitHub issue tracker template to file only into the user's own
repo, never into mattpocock/skills, which is how #541 to #550 landed here.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
