Add optional payeeId to CreateExpenseRequest + ExpenseListItemDto
frontend models. In the expense form dialog: inject Payee1099ApiService,
load active payees on init, add payeeId to the form state, pre-populate
it from expense.payeeId in edit mode, and include it in the emitSave
payload. Render a "1099 Recipient / 1099 收款人" Kendo DropdownList
(textField=legalName, valueField=id, [valuePrimitive]="true",
md:col-span-2) inside the vendor-mode ng-container below Vendor Name
and Check #.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Chris Chen
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