/**
 * mailbox-attach — composition glue for the agent-loop mailbox checker.
 *
 * Lives at the src root (composition layer) because it constructs the
 * concrete GlobalMailbox from coordination/ and hands the resulting
 * checker to core/ — core/ itself may only depend on the Mailbox
 * interface (architecture Rule 3, see tests/architecture/
 * package-boundaries.test.ts).
 *
 * @module mailbox-attach
 */
import type { MailboxMessage } from './coordination/mailbox-types.js';
import type { FleetConfig } from './types/config.js';
import type { AgentInternals } from './core/agent-internals.js';
export declare function attachMailboxChecker(a: AgentInternals, source?: 'cli' | 'webui'): () => Promise<MailboxMessage[]>;
/**
 * Fleet-pulse provider: returns a fresh "[FLEET PULSE]" digest block when
 * (a) the read throttle allows, (b) at least one online peer exists, and
 * (c) the peer picture actually changed since the last injected pulse.
 * Otherwise `null`. Same best-effort posture as the mailbox checker — any
 * failure degrades to "no pulse", never to a thrown error.
 */
export declare function attachFleetPulse(a: AgentInternals, cfg?: FleetConfig['pulse']): () => Promise<{
    type: 'text';
    text: string;
} | null>;
//# sourceMappingURL=mailbox-attach.d.ts.map