/**
 * /api/settings — host-level settings UI surface.
 *
 * The persisted shape is `host.config.json` (managed by the installer).
 * This route is a thin passthrough plus a write-whitelist:
 *
 *   - uiPort        rejected (restart required; only edit at install time)
 *   - upnpEnabled   accepted → also propagated to NatService.putSettings
 *   - updates.autoApply  accepted → propagated to UpdateService.putSettings
 *   - updates.manifestUrl accepted → propagated to UpdateService.putSettings
 *   - claimAddresses accepted (replaced whole) → read by the next claim code
 *   - anything else 400 invalid_setting
 *
 * GET returns the full `HostConfigFile` (the SPA wants the full shape so it
 * can render a read-only view of the rejected keys).
 */
import type { FastifyInstance } from 'fastify';
import type { NatService } from '../../nat/index.js';
import type { UpdateService } from '../../update/index.js';
import type { HostSettingsStore } from '../settings-store.js';
export interface SettingsRoutesOptions {
    settingsStore: HostSettingsStore;
    /** An `upnpEnabled` write takes effect on it at once. */
    nat: NatService;
    update?: UpdateService;
}
export declare function registerSettingsRoutes(app: FastifyInstance, opts: SettingsRoutesOptions): void;