/**
 * Policy diagnostics panel data provider.
 *
 * Wraps a `PolicyRegistry` and optionally a `DivergencePanel` to expose
 * combined policy state (current bundle, candidate, simulation status,
 * divergence trends) for the diagnostics view.
 *
 * This panel is push-passive: it does not drive timers. Callers must
 * call `recordTrendEntry()` periodically if a divergence panel is attached.
 */
import type { PolicyBundleVersion, PolicyDiffResult } from '../../permissions/policy-registry.js';
import { PolicyRegistry } from '../../permissions/policy-registry.js';
import type { DivergenceDashboardSnapshot } from '../../permissions/divergence-dashboard.js';
import type { DivergencePanel } from './divergence.js';
import type { ComponentConfig } from '../types.js';
import type { PermissionAuditEntry } from '../../permissions/policy-runtime.js';
import type { PolicyLintFinding } from '../../permissions/lint.js';
import type { PolicySimulationSummary } from '../../permissions/simulation-scenarios.js';
import type { PolicyPreflightReview } from '../../permissions/preflight.js';
/**
 * A point-in-time snapshot of policy state for diagnostics rendering.
 */
export interface PolicyPanelSnapshot {
    /** The currently enforced bundle, or null if no policy is active. */
    current: PolicyBundleVersion | null;
    /** The pending candidate bundle, or null if none loaded. */
    candidate: PolicyBundleVersion | null;
    /** History of previous active bundles (most recent first). */
    history: PolicyBundleVersion[];
    /** Diff between current and candidate, or null if unavailable. */
    diff: PolicyDiffResult | null;
    /** Divergence dashboard snapshot, or null if no panel attached. */
    divergence: DivergenceDashboardSnapshot | null;
    /** Recent permission requests and decisions for operator audit review. */
    recentPermissionAudit: readonly PermissionAuditEntry[];
    /** Policy lint findings for current and candidate bundles. */
    lintFindings: readonly PolicyLintFinding[];
    /** Concrete scenario results from the most recent policy simulation run. */
    lastSimulationSummary: PolicySimulationSummary | null;
    /** Most recent proactive policy preflight review. */
    lastPreflightReview: PolicyPreflightReview | null;
    /** ISO 8601 timestamp of when this snapshot was captured. */
    capturedAt: string;
}
/**
 * PolicyPanel, diagnostics data provider for the policy registry.
 *
 * Usage:
 * ```ts
 * const registry = new PolicyRegistry();
 * const panel = new PolicyPanel(registry, divergencePanel);
 *
 * panel.subscribe(() => {
 *   const snap = panel.getSnapshot();
 *   render(snap);
 * });
 *
 * // Notify when the registry state changes:
 * panel.notify();
 *
 * // On cleanup:
 * panel.dispose();
 * ```
 */
export declare class PolicyPanel {
    private readonly _registry;
    private readonly _divergencePanel;
    private readonly _config;
    private readonly _recentPermissionAudit;
    private readonly _lintFindings;
    private readonly _lastSimulationSummary;
    private readonly _lastPreflightReview;
    private readonly _subscribers;
    constructor(registry: PolicyRegistry, divergencePanel?: DivergencePanel | null, recentPermissionAudit?: readonly PermissionAuditEntry[], lintFindings?: readonly PolicyLintFinding[], lastSimulationSummary?: PolicySimulationSummary | null, lastPreflightReview?: PolicyPreflightReview | null, config?: ComponentConfig);
    /**
     * recordTrendEntry, Forwards to the attached DivergencePanel if present.
     *
     * Call periodically (e.g. every 30 seconds) while simulation is active.
     */
    recordTrendEntry(): void;
    /**
     * notify, Trigger a subscriber notification.
     *
     * Call after registry state changes (load, promote, rollback) so the
     * diagnostics view can re-render.
     */
    notify(): void;
    /**
     * getSnapshot, Returns the current combined policy + divergence snapshot.
     */
    getSnapshot(): PolicyPanelSnapshot;
    /**
     * Register a callback invoked whenever the panel state changes.
     * @returns An unsubscribe function.
     */
    subscribe(callback: () => void): () => void;
    /**
     * Release all subscriptions.
     */
    dispose(): void;
    private _notify;
}
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