/**
 * Fast-append operation for the Google Sheets API sync provider.
 *
 * Appends rows through one idempotent, atomic target+receipt batch: replay
 * rows are recognized through the receipt tab and verified against the
 * visible identity, pending rows pass the identity preflight, and a
 * byte-budget deferral commits only a prefix of the pending rows.
 *
 * Phase 1 of the batch-merge work: a single fast-append request may now
 * span MULTIPLE tabs. Rows carry an optional route (the dispatcher fills it
 * from each pending effect), and when they do the provider groups them by
 * route, reads all needed tabs with ONE enumeration + ONE ranged read, and
 * emits ONE batchUpdate whose requests target the different tabs' sheetIds.
 * Single-tab requests (rows without route fields) keep the legacy
 * byte-identical path.
 */
import { type FastAppendRowsRequest, type FastAppendRowsResult } from "../../../../contracts/sheets/syncSheets.js";
import { type GoogleSheetsApiProviderDeps } from "./shared.js";
/** Appends rows through one idempotent, atomic target+receipt batch. */
export declare function fastAppendRows(deps: GoogleSheetsApiProviderDeps, request: FastAppendRowsRequest): Promise<FastAppendRowsResult>;
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