import { AssistantMode, AssistantSandboxAuthContext, PrewarmLevel } from './types';
export interface RuntimeDeps {
    product: string;
    mode: AssistantMode;
    ttlSeconds: number;
    isProd: () => boolean;
    getWorkspaceId: () => string;
    getAuthContext: () => AssistantSandboxAuthContext;
}
export declare class AssistantRuntimeManager {
    private readonly deps;
    private sandboxId;
    private sessionId;
    private provisioningSandboxId;
    private readonly quarantinedSandboxIds;
    private inFlight;
    private keepWarmTimer;
    private visibilityHandler;
    constructor(deps: RuntimeDeps);
    private key;
    private persist;
    /** Drop warm refs and optionally quarantine a reaped runtime for this manager's lifetime. */
    reset(options?: {
        quarantineCurrentSandbox?: boolean;
    }): void;
    /** Single-flight provision: find-or-create → ready → service-health → session. */
    ensureRuntime(): Promise<{
        sandboxId: string;
        sessionId: string;
    }>;
    /** Intent pre-warm. 'probe' never creates a paid sandbox; 'full' provisions. */
    prewarm(level?: PrewarmLevel): void;
    /** Start the visibility-gated keep-warm heartbeat while the widget is open. */
    startKeepWarm(): void;
    stopKeepWarm(): void;
    getSandboxId(): string | null;
}
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