onRowSelectionChange computed the next selection from the render-time
`rowSelection` closure, which could be stale by the time a second row was
toggled. The updater then produced a selection containing only the latest
row, and the persistedMap sync deleted the earlier one — so checking a
second part unchecked the first, making multi-select behave as single-select.
Track the latest selection in a ref and derive the updater from it, so each
toggle builds on the current selection. Fixes adding multiple parts/services/
expense items in invoices, estimates, and job cards.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
ERP-System
75e44f5b26