Ship full split-invoice stock purchase order workflow:
- Add 5 new MCP tools for per-line stock purchase item management and catalogue updates
- Add idempotent database migration adding sku, unit, and supplier_sku fields to stock_purchase_items
- Implement service layers for all new operations, including auto-closing the parent PO when all lines are fully collected
- Add complete test coverage for new services and API routes
- Update all relevant documentation including MCP API specs, agent instructions, and feature request logs
- Add Supplier Map component to suppliers page and reorganize sidebar navigation
- Implement picking slip PDF generation with supplier per line item and picked-by signature footer
- Add invoice bulk print tracking API and view models to track printed invoice state
- Extend company search and form to support email/telephone fields and improve searchability
- Fix data table debounce race condition by using useRef for onSearch handler
- Fix supplier page fetch race condition with debounced timeout
- Reduce list page item counts to 10 per page for customers, companies, and suppliers
- Update company search filter to include email and telephone in search queries
- Add comprehensive test suite for new and existing components and APIs
- Add pdf-lib dependency for PDF generation and update related tooling
- Clean up unused code and fix minor linting issues
