/**
 * Credential storage for Qwen OAuth
 * Saves/loads credentials from ~/.qwen/oauth_creds.json
 */
export interface QwenCredentials {
    accessToken: string;
    refreshToken?: string;
    expiryDate?: number;
    tokenType?: string;
    resourceUrl?: string;
    scope?: string;
}
export declare function saveCredentials(credentials: QwenCredentials): void;
export declare function loadCredentials(): QwenCredentials | null;
export declare function deleteCredentials(): void;
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