* Add .tool-versions to gitignore
* Add dropzone js for drag and drop file uploads
* UI for csv file uploads for import
* dropzone controller and use lucide_icon instead of svg
* Preview for file chosen
* File upload
* Remove dropzone
* Normalize I18n keys and fix lint issues
* Add system tests
* Cleanup
* Remove unwanted
Introduces a basic CSV import module for bulk-importing account transactions.
Changes include:
- User can load a CSV
- User can configure the column mappings for a CSV
- Imported CSV shows invalid cells
- User can clean up their data directly in the UI
- User can see a preview of the import rows and confirm import
- Layout refactor + Import nav stepper
- System test stability improvements
