feat: github templates and db migration

.github/SECURITY.md

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+# Security Policy
+
+## Supported Versions
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 1.x.x   | :white_check_mark: |
+
+## Reporting a Vulnerability
+
+We take security vulnerabilities seriously. If you discover a security vulnerability within OpenCut, please send an email to security@opencut.dev. All security vulnerabilities will be promptly addressed.
+
+Please do not report security vulnerabilities through public GitHub issues.
+
+### What to include in your report
+
+- Description of the vulnerability
+- Steps to reproduce
+- Potential impact
+- Any suggested fixes
+
+### Response timeline
+
+- We will acknowledge receipt within 48 hours
+- We will provide a detailed response within 5 business days
+- We will keep you updated on our progress
+
+Thank you for helping keep OpenCut secure!