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/ISSUE_TEMPLATE/security_vulnerability.md

@@ -0,0 +1,37 @@
+---
+name: Security Vulnerability
+about: Report security issues privately
+title: '[SECURITY] '
+labels: 'security'
+assignees: ''
+
+---
+
+⚠️ **IMPORTANT: For serious security vulnerabilities, please DO NOT create a public issue.**
+
+Instead, please email security@example.com with the details.
+
+For minor security improvements or questions, you can use this template:
+
+**Type of Security Issue**
+- [ ] Authentication/Authorization
+- [ ] Data Exposure
+- [ ] Input Validation
+- [ ] Configuration Issue
+- [ ] Dependency Vulnerability
+- [ ] Other: ___________
+
+**Description**
+Brief description of the security concern.
+
+**Impact**
+What could an attacker potentially do?
+
+**Steps to Reproduce**
+If applicable, how can this be reproduced?
+
+**Suggested Fix**
+If you have ideas on how to fix this issue.
+
+**References**
+Any relevant security advisories, CVEs, or documentation.