- Add core attachment type with metadata fields for transaction files
- Add GORM model for attachment with proper relationships
- Include file information, upload timestamps, and soft deletion support
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Replace SQL-based queries with GORM repository calls
- Update all model interfaces to use repository pattern
- Fix compilation errors in core/model/ files
- Update mocks to match new repository interfaces
- Modify API handlers to use new repository layer
- Maintain backward compatibility with existing interfaces
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
