/**
 * companion-chat-broker-sync.ts
 *
 * Owns the live mirror of companion sessions into the shared
 * `SharedSessionBroker` store (S1 item D: companion registers into the
 * broker at write time), chaining register/close/delete ops per session so
 * they never race (order = call order), and exposing `flush()` so the
 * companion HTTP routes can await in-flight ops before responding
 * (deterministic for tests).
 *
 * Split out of CompanionChatManager (see CHANGELOG 1.0.0) to stay under the repo's
 * grandfathered line-cap ceiling (see scripts/check-line-cap.ts), a pure
 * file-organization move, not a behavior change: same chaining, same
 * best-effort swallow-and-log-on-failure semantics.
 */
import type { CompanionChatSession } from './companion-chat-types.js';
import type { CompanionSessionBrokerBridge } from './companion-chat-broker-bridge.js';
export declare class CompanionBrokerSync {
    private readonly broker;
    private readonly pendingOps;
    constructor(broker: CompanionSessionBrokerBridge | null);
    /**
     * Await all in-flight best-effort broker-sync operations. The daemon's
     * companion HTTP routes call this before responding so `/api/sessions`
     * reflects the change synchronously; tests use it to make the mirror
     * deterministic. A no-op when no broker bridge is configured.
     */
    flush(): Promise<void>;
    /** Chain a broker op AFTER any prior op for the same session so register and
     * close/delete never race (order = call order). Best-effort; errors are
     * swallowed (logged, never thrown into the caller's write path). */
    track(sessionId: string, run: () => Promise<void>): void;
    registerSession(meta: CompanionChatSession): Promise<void>;
    closeSession(sessionId: string): Promise<void>;
    /** Hard-remove the mirrored shared-session record (see CHANGELOG 1.0.0: companion delete is a real removal). */
    deleteSession(sessionId: string): Promise<void>;
}
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