import { type ConversationItem } from "@droppii-org/wasm-client-sdk";
export declare const isSupportThreadJoinedHere: (conversationId?: string) => boolean;
/**
 * CRM's join gate for the thread detail: an agent viewing a support thread
 * they aren't a member of can't send until they join. Opt-in — only a host
 * that supplies `joinThread` (PDP Portal) gets it; owners and CRM never do.
 */
export declare const useAgentSupportThreadJoin: (conversation?: ConversationItem | null, joinThread?: (conversationId: string) => Promise<unknown>) => {
    isCheckingMembership: boolean;
    needsJoin: boolean;
    join: () => Promise<void>;
    isJoining: boolean;
};
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