/**
 * OMC HUD - Session Summary Element
 *
 * Displays a brief (<20 char) AI-generated summary of the current session.
 * The summary is generated by a standalone script (scripts/session-summary.mjs)
 * that runs in the background and caches results in the state directory.
 *
 * Generation rules:
 * - First generation after 10+ user turns
 * - Regeneration every 10 additional turns
 * - Uses `claude -p` for summarization
 */
export interface SessionSummaryState {
    summary: string;
    turnCount: number;
    generatedAt: string;
}
/**
 * Render the session summary element.
 * Returns null if no summary is available.
 */
export declare function renderSessionSummary(summaryState: SessionSummaryState | null): string | null;
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