export interface BridgeRuntime {
    port: number;
    pid: number;
    startedAt: string;
}
export declare function runtimeFile(): string;
/** Runtime file written by the daemon on start (stale entries are fine). */
export declare function writeRuntimeFile(entry: BridgeRuntime): void;
export declare function readRuntimeFile(): BridgeRuntime | null;
/**
 * Best arbiter base URL: explicit env override > runtime file > probe the
 * candidate ports once. Returns null when no daemon answers - callers must
 * fail open.
 */
export declare function discoverArbiter(): Promise<string | null>;
export type WsEventType = 'lock.waiting' | 'lock.granted' | 'lock.released' | 'build.start' | 'build.finish' | 'peer.ping' | 'presence.here' | 'worktree.created' | 'worktree.removed';
export interface WsEvent {
    type: WsEventType;
    /** ISO timestamp (filled automatically). */
    ts?: string;
    dir?: string;
    agentId?: string;
    kind?: string;
    taskId?: string;
    note?: string;
}
/** Log always; relay to the daemon's SSE hub when reachable. Never throws. */
export declare function publishEvent(event: WsEvent): void;
/** Convenience: did `file` appear recently (used by tests). */
export declare function arbitrationLogExists(): boolean;