- Add JWT-based secure file access for local storage with 1-hour expiry
- Implement GORM repository methods for attachment CRUD operations
- Add secure file serving endpoint with token validation
- Update storage interface to support user context in URL generation
- Add comprehensive security features including path traversal protection
- Update documentation with security model and configuration examples
- Add utility functions for hex/byte conversion and UUID validation
- Configure secure file permissions (0600) for uploaded files
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Add NewUUID() function for generating unique attachment identifiers
- Add IsValidUUID() function for validating UUID format in API requests
- Support 32-character hex string validation for secure file handling
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
