Create maintainer-friendly pull requests while avoiding 16 common rejection mistakes.

• Prevents personal development artifacts (SESSION.md, planning docs, debug screenshots, temp test files) from being committed using a pre-PR check script
• Enforces three critical workflow rules: always use feature branches, test thoroughly before submitting, and keep PRs focused on a single change under 400 lines
• Provides templates and guides for PR descriptions using What/Why/How structure, conventional commit messages, and issue linking with auto-close keywords
• Includes bundled scripts, checklists, and examples to scan for artifacts, clean branches, and follow project conventions before submission