/**
 * Logs a one-line environment report — SDK build plus OS / browser / device —
 * to the `efp:device` debug namespace.
 *
 * Hidden by default; enable it with `localStorage.debug = 'efp:device'` (or
 * `efp:*`) and reload. Deliberately unstyled so support can ask a user to copy
 * the line and send it when reporting an issue.
 */
export declare function logDeviceInfo(): Promise<void>;
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