export interface DismissedDiscovery {
    /** Absolute path to the discovery anchor at the time of dismissal. */
    repoRoot: string;
    /** Path relative to `repoRoot` for the specific index file dismissed. */
    indexPath: string;
}
export interface AirPreferences {
    $schema?: string;
    autoDiscovery?: {
        dismissed?: DismissedDiscovery[];
    };
}
/** Default location: `~/.air/preferences.json`, sibling to `air.json`. */
export declare function getDefaultPreferencesPath(): string;
/**
 * Read the preferences file. Returns a structurally complete default when the
 * file is missing or malformed so callers never need to null-check.
 */
export declare function loadPreferences(path?: string): AirPreferences;
/** Write preferences to disk with 2-space indentation and trailing newline. */
export declare function savePreferences(prefs: AirPreferences, path?: string): void;
/**
 * Add one or more (repoRoot, indexPath) entries to the dismissed-set.
 * Idempotent — entries already present are not duplicated.
 */
export declare function addDismissed(entries: DismissedDiscovery[], path?: string): AirPreferences;
/**
 * True if the given (repoRoot, indexPath) pair is in the dismissed-set.
 */
export declare function isDismissed(prefs: AirPreferences, entry: DismissedDiscovery): boolean;
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