feat: add GitHub issue and PR templates

- Add bug report template with environment details
- Add feature request template with use case section
- Add documentation improvement template
- Add security vulnerability template with warnings
- Add question template for support
- Add issue template config with helpful links
- Add comprehensive pull request template
- Update mirror workflow to exclude production guide

These templates will help maintain quality contributions
and streamline the issue/PR process on GitHub.

.github/pull_request_template.md

@@ -0,0 +1,49 @@
+## Description
+
+Please include a summary of the changes and which issue is fixed. Include relevant motivation and context.
+
+Fixes # (issue)
+
+## Type of change
+
+Please delete options that are not relevant.
+
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] Documentation update
+- [ ] Performance improvement
+- [ ] Code refactoring
+
+## How Has This Been Tested?
+
+Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.
+
+- [ ] Unit tests pass (`npm test`)
+- [ ] Manual testing completed
+- [ ] Tested on Docker deployment
+- [ ] Tested on production-like environment
+
+**Test Configuration**:
+* PicPeak Version:
+* Node.js Version:
+* Database: PostgreSQL / SQLite
+* Browser:
+
+## Checklist:
+
+- [ ] My code follows the style guidelines of this project
+- [ ] I have performed a self-review of my code
+- [ ] I have commented my code, particularly in hard-to-understand areas
+- [ ] I have made corresponding changes to the documentation
+- [ ] My changes generate no new warnings
+- [ ] I have added tests that prove my fix is effective or that my feature works
+- [ ] New and existing unit tests pass locally with my changes
+- [ ] Any dependent changes have been merged and published
+- [ ] I have updated the CHANGELOG.md file
+
+## Screenshots (if appropriate):
+
+## Additional Notes:
+
+Add any additional notes, concerns, or discussion points here.