Phase 2.2: Add proper type definitions for wx-svelte-grid
- Created Cell interface export in wx-svelte-grid declarations
- Updated all 9 database cell components to use Cell type
- Removed custom Props interfaces with loose IRow typing
- Improved IntelliSense support for grid component props
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
