/**
 * HTTP API Server
 *
 * REST API for browser-based clients to query the local .gitnexus/ index.
 * Also hosts the MCP server over StreamableHTTP for remote AI tool access.
 *
 * Security: binds to 127.0.0.1 by default (use --host to override).
 * CORS is restricted to localhost and the deployed site.
 */
export declare const createServer: (port: number, host?: string) => Promise<void>;