import type { AgentStorageApi } from "../../session/agent-storage.js";
import type { Extension } from "./types.js";
/** Discovered extension paths split by whether they must bind before the session is created. */
export interface StartupExtensionPartition {
    eager: string[];
    deferred: string[];
}
/** Whether a bound extension registered nothing that has to exist before the first frame. */
export declare function canBindAfterStartup(extension: Extension): boolean;
/**
 * Split extension paths into those that must load before session creation and
 * those a recorded verdict for their current source proves safe to bind later.
 * Order within each list follows `paths`.
 */
export declare function partitionStartupExtensions(storage: AgentStorageApi, paths: readonly string[], cwd: string): Promise<StartupExtensionPartition>;
/**
 * Record each freshly bound file-backed extension's startup verdict. Call right
 * after binding: registrations made later (session_start) never affect startup.
 */
export declare function recordStartupVerdicts(storage: AgentStorageApi, extensions: readonly Extension[]): Promise<void>;