- Added `FormCustomersPreview` and `FormDocumentsPreview` components to display customer and document information in the plan form.
- Implemented customer location handling in the validation schema to ensure proper data representation.
- Updated the `FormGeneral` component to integrate the new previews, improving user experience during plan creation.
- Added unit tests for new functionalities to ensure reliability and correctness.
- Enhanced language support for preview sections in both English and Indonesian.
These changes improve the plan form's usability by providing clear previews of customers and documents, streamlining the planning process.