/**
 * Composition root for the internal sync engine's concrete adapters (P8-C).
 *
 * This module is the ONLY place where the engine wiring names concrete
 * adapter classes: the MikroORM SQLite runtime (scalar schema generation,
 * storage opening + schema migration + mapping registration, the flush
 * coordinator binding, and the scalar persistence provider), the MikroORM
 * polling engine, the full-direct Google Sheets API remote provider, and the
 * ADC-backed HTTP transport used by existing-sheet adoption reads. Every
 * block is extracted verbatim from the former in-engine wiring sites
 * (`SyncServiceBootstrap`, `remoteProvider`, `pollingSupervisor`,
 * `existingSheetAdoption`, `createLocalTypedSheetsRuntime`), so runtime
 * behavior is byte-identical — only the construction site moved.
 *
 * Direction: `composition` imports the engine (application/sync,
 * application/orm) and the concrete adapters. NOTHING in application imports
 * composition; the public API layer (`src/api/Hikoutei.ts`) loads this
 * composition root through `packages/library/core/composition/src/index.ts`, which registers the
 * engine ports lazily so importing the root package alone still never loads
 * MikroORM or the Google SDK module graph.
 */
import type { SyncEngineCompositionPorts } from "../sync-engine/sync/service/compositionPorts.js";
/**
 * Resolves the lazy concrete composition for the engine ports registry.
 * Constructing the ports is synchronous; the adapter module graphs load the
 * first time `packages/library/core/composition/src/index.ts` dynamically imports this module.
 */
export declare function syncEngineCompositionPorts(): Promise<SyncEngineCompositionPorts>;
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