export interface DeepSeekCredentialSelector {
    ref: string;
    storedBaseUrl?: string;
}
export declare class DeepSeekCredentialSettingsError extends Error {
    readonly classification: 'invalid-selector' | 'settings-unreadable' | 'settings-too-large' | 'invalid-settings' | 'invalid-stored-endpoint';
    constructor(classification: 'invalid-selector' | 'settings-unreadable' | 'settings-too-large' | 'invalid-settings' | 'invalid-stored-endpoint', message: string);
}
/** Accept only environment-style reference names; the value is never interpolated. */
export declare function isValidDeepSeekCredentialReference(value: unknown): value is string;
/**
 * Read only the non-secret credential selector from a parsed settings document.
 * The credential value itself is never stored here; this selector only names the
 * reference the official runtime resolves.
 */
export declare function extractDeepSeekCredentialSelector(document: unknown): DeepSeekCredentialSelector;
/**
 * Read the permitted settings selector with a bounded read. The file is optional:
 * a missing settings file keeps the default reference instead of failing.
 */
export declare function readDeepSeekCredentialSelector(settingsPath: string): Promise<DeepSeekCredentialSelector>;
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