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Function: previewSupplemental()

previewSupplemental(invoiceId): Promise<{ ok: true; preview: SupplementalPreview; } | { error: string; ok: false; }>

Defined in: src/server/actions/invoiceManage.ts:326

Owner-only: preview the supplemental for a drifted invoice — the family's unbilled delta per line, priced at the parent's frozen rates (ADR-0055). Read-only; feeds the "Bill late hours" confirm dialog. Empty lines means the family is clear.

Parameters​

invoiceId​

string

Returns​

Promise<{ ok: true; preview: SupplementalPreview; } | { error: string; ok: false; }>