/**
 * Lemma API v2 — HTTP server (Lane C)
 *
 * Boots the /v2 app alongside, and without touching, the intact v1 server
 * (src/cloud/server.ts:42 listens on LEMMA_CLOUD_PORT/3100 — untouched). v2
 * listens on its own port so both can run side by side during the swarm cutover.
 *
 * Wiring: DATABASE_URL present ⇒ Postgres-backed store/identity/rate-limiter
 * (Lane B / Lane D); absent ⇒ local file-backed store + in-memory identity/rate
 * limiter, so `startV2Server()` also works with zero external services for dev.
 *
 * KNOWN GAP (see lane-notes/C.md ## handoff): UsageLedger has no durable backend
 * yet (Lane E ships only `InMemoryLedgerStore`) — usage counters reset on
 * restart until a Postgres-backed `AppendOnlyStore` lands.
 *
 * Ownership: Lane C.
 */
import type { Server } from 'http';
export interface StartV2ServerOptions {
    port?: number;
    /** Overrides the DATABASE_URL-presence check — pass explicitly in tests. */
    databaseUrl?: string;
}
/** Starts the /v2 HTTP server. Resolves with the underlying `http.Server` once listening. */
export declare function startV2Server(options?: StartV2ServerOptions): Promise<Server>;
export default startV2Server;
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