/**
 * Briefing Insights Section
 *
 * Formats a DigestSnapshot into a compact briefing section (~50 tokens).
 * Only included when a digest snapshot is available (scheduler has run at least once,
 * or a snapshot was restored from a previous server session).
 */
import type { ResourceContext } from '../../shared.js';
/** Compact insights payload for the briefing JSON */
export interface BriefingInsights {
    activityTrend: string;
    significanceSpike: string | null;
    staleProjects: {
        projectNumber: number;
        daysSilent: number;
    }[];
    topImportance: {
        id: number;
        score: number;
        preview: string;
    }[];
    relationshipDensity?: number;
}
/**
 * Build the insights section from the latest digest snapshot.
 *
 * Resolution order:
 * 1. Scheduler's in-memory digest (HTTP transport with digest job running)
 * 2. Persisted DB snapshot (survives server restarts)
 * 3. Live compute with 60s TTL cache (stdio transport, fresh databases)
 *
 * Returns null only if compute itself fails or database has no entries.
 */
export declare function buildInsightsSection(context: ResourceContext): BriefingInsights | null;
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