/**
 * Brain health dashboard — operator-facing status report for brain.db.
 *
 * Aggregates 8 named health flags for `cleo doctor brain`. Each flag includes
 * a count, status (ok/warn/fail), and a remediation hint pointing to the
 * relevant BBTT W-task.
 *
 * Read-only: MUST NOT write to brain.db or any persistent store.
 *
 * @module memory/brain-health-dashboard
 * @task T1908 (BBTT-W2-4)
 */
/** Health flag severity. */
export type HealthFlagStatus = 'ok' | 'warn' | 'fail';
/** A single named health flag in the dashboard. */
export interface HealthFlag {
    /** Short flag name (matches BBTT W-task reference). */
    name: string;
    /** Status level. */
    status: HealthFlagStatus;
    /** Numeric value (count, ratio %, etc.) for the underlying metric. */
    value: number;
    /** Human-readable description of what the flag measures. */
    description: string;
    /** Remediation hint — which BBTT W-task to consult. */
    remediationHint: string;
    /** True when this flag is P0 (triggers exit code 1 in `cleo doctor brain`). */
    isP0: boolean;
}
/** Full brain health dashboard result. */
export interface BrainHealthDashboard {
    /** All health flags. */
    flags: HealthFlag[];
    /** Total brain_observations row count. */
    totalObservations: number;
    /** True if any P0 flag is in `fail` state. */
    hasP0Failure: boolean;
    /** ISO timestamp of report generation. */
    generatedAt: string;
}
/**
 * Compute the brain health dashboard by running read-only queries against brain.db.
 *
 * Returns a structured report with 8 named flags. Callers should check
 * `hasP0Failure` and exit with code 1 when true.
 *
 * @param projectRoot - Absolute path to the CLEO project root.
 *
 * @task T1908
 */
export declare function computeBrainHealthDashboard(projectRoot: string): Promise<BrainHealthDashboard>;
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