export declare const MSG: {
    readonly REGISTER: "register";
    readonly REGISTERED: "registered";
    readonly CALL: "call";
    readonly RESULT: "result";
    readonly CONFIRM_REQUEST: "confirm-request";
    readonly CONFIRM_ACCEPT: "confirm-accept";
    readonly CONFIRM_DECLINE: "confirm-decline";
    readonly CONTEXT: "context";
    readonly ERROR: "error";
};
/** Risk tiers a manifest entry may declare. 'export' always routes through confirm. */
export declare const RISK_TIERS: readonly ["read", "display", "mutate", "export"];
export declare const DEFAULT_CALL_TIMEOUT_MS = 10000;
export declare const DEFAULT_CONFIRM_TIMEOUT_MS = 120000;
/** Result of a bridge command dispatched to the tab's registry. */
export interface BridgeResult {
    ok: boolean;
    summary: string;
    data?: unknown;
    affected?: unknown;
}
export declare const NO_SESSION_RESULT: BridgeResult;
export declare function timeoutResult(command: string, ms: number): BridgeResult;
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