/**
 * Split a rendered tool response into result blocks. Blocks are delimited by
 * `## path:lines` or `## path (…)` headers — the convention used by every
 * search-family tool. Anything before the first `##` is treated as preamble
 * (header text, result count) and preserved verbatim.
 */
export declare function splitBlocks(text: string): {
    preamble: string;
    blocks: string[];
    trailer: string;
};
/**
 * Keep only blocks whose body matches the given regex. Returns the rebuilt
 * text plus a one-line "filtered N→K" footer.
 */
export declare function grepResults(text: string, pattern: string): {
    text: string;
    kept: number;
    total: number;
};
/**
 * Keep only the first N blocks. No-op when N >= total.
 */
export declare function headResults(text: string, n: number): {
    text: string;
    kept: number;
    total: number;
};
/**
 * Byte-slice into a single block (by zero-based index). Returns the slice plus
 * the header line for context.
 */
export declare function ctxPeek(text: string, hitIndex: number, offset: number, len: number): {
    text: string;
    found: boolean;
};