export type LoopFileResult = {
    path: string;
    content: string;
};
/**
 * Read loop.md from project (.sirius/loop.md) or home (~/loop.md). Project
 * takes precedence. Content > 25 KB is truncated with a warning marker.
 * Returns null when neither path exists or can be read.
 */
export declare const readLoopFile: (workspaceRoot: string) => Promise<LoopFileResult | null>;