- Added `reimportar_e_analisar` method to `App` struct to handle reimporting and analyzing files.
- Preserved previous analysis results to restore in case of errors or empty imports.
- Updated UI to include a button for reanalyzing the current file.
- Enhanced file selection logic to allow direct processing if a compatible preset is selected.
- Refactored import logic to streamline the analysis process for both CSV and XLSX files.
- Improved user feedback with appropriate error and success messages during file operations.
- Added main application logic in `src/ui/app.rs` to handle state and modal dialogs.
- Created module structure for UI components in `src/ui/mod.rs`.
- Implemented column configuration screen in `src/ui/screens/configuracao_colunas.rs`.
- Developed file import screen in `src/ui/screens/import.rs` for CSV and XLSX files.
- Added layout management screen in `src/ui/screens/layouts.rs` for saving and importing layouts.
- Created result display screen in `src/ui/screens/resultado.rs` to show analysis results.
- Introduced modular organization for screens in `src/ui/screens/mod.rs`.
Felipe