import type { PlatformAdapter } from '../platform/index.js';
/** Feature gate: turn-completion notification is ON by default. */
export declare function isTurnNotifyEnabled(): boolean;
/** Minimum turn duration (seconds) before a completion notification is pushed. */
export declare function getTurnNotifyThresholdS(): number;
/** Push a NEW message to the conversation's channel when a long-running, user-initiated
 *  turn finishes — so the user gets an actual push notification (editing the status
 *  message to "✓ Done" does not notify on Slack or Feishu). Works for both Slack and
 *  Feishu through the PlatformAdapter abstraction (Composite fans out to both).
 *
 *  Gated by: feature flag, interactive-channel scope, and a duration threshold.
 *  Never throws — a failed notification must not affect the main turn. */
export declare function maybeNotifyTurnComplete(params: {
    adapter: PlatformAdapter;
    channel: string;
    threadAnchorId: string | null;
    sessionName: string | null;
    sessionId: string | null;
    elapsedS: number;
    elapsedStr: string;
    status: 'completed' | 'failed';
    metricsSuffix?: string;
}): Promise<void>;