Prepare repository for public release

[jacklv-coder]

Summary

• add a current macOS GitHub Actions workflow for Swift tests and repository validation
• add structured bug and feature forms plus a pull request template
• add contribution, security, and release-history documentation
• add CI, release, and license badges plus SSH-first/public-HTTPS clone guidance
• close parent-side command pipe writers after launch so captured-output readers receive EOF consistently

Validation

• xcrun swift test --no-parallel — 15 tests in 5 suites passed
• sh -n ipapatch-lookin Tools/patch.sh Tools/verify_patch.sh
• plutil -lint IPAPatch.xcodeproj/project.pbxproj
• YAML syntax validation for all workflow and Issue Form files
• git diff --check
• Final GitHub Actions run — success
• Final full-branch Codex CR — no actionable findings; no P1/P2 issues

CI follow-up

The first hosted macOS run compiled successfully but the parallel Swift test runner did not shut down. The final workflow closes parent-side pipe writers and runs this small test suite serially to avoid the Swift Testing/Foundation Process shutdown race observed on the hosted runner. The verified workflow uses actions/checkout@v7 and completed successfully.

Release follow-up

After merge, publish ipapatch-lookin-v0.4.2, enable private vulnerability reporting, and add repository topics. The historical upstream 1.0 and 1.0.1 tags remain unchanged.