- Added endpoints to link and unlink customers to vendors, including validation for relationship types.
- Implemented a UI for managing linked customers in the vendor detail view.
- Introduced a search feature for customers when linking to vendors.
- Updated database schema to support customer-vendor relationships with necessary constraints and indices.
- Added migration scripts for new tables and fields related to supplier invoices and customer-vendor links.
- Modified bottom bar visibility in the frontend for improved user experience.
