/**
 * Red-line classifier — turns raw markdown lines into RedLineEntry.
 *
 * Algorithm: for each MarkdownLine, check whether the line text contains one
 * of the four red-line markers (MANDATORY / BLOCKING / MUST NOT / RED LINE).
 * On a hit, extract the surrounding ±2 lines as context, look up the red
 * line in the catalog, and emit a RedLineEntry. Lines that contain a marker
 * but match no catalog entry still produce a RedLineEntry (with backing =
 * prose-only and enforcerRef = null) — those are the "discovered but not yet
 * enforced" red lines the L2 redesign is working to eliminate.
 */
import type { RedLineEntry, RedLineMarker } from './types.js';
export declare function detectMarker(lineText: string): RedLineMarker | null;
/**
 * Derive a human-readable rule name from the marker line. Heuristic: take
 * the first 8 words of the line, lowercase, trimmed. Catalog matching is
 * the source of truth for the canonical rule name; this is the fallback
 * when no catalog entry matches.
 */
export declare function deriveRuleName(lineText: string): string;
export interface ClassifyFileInput {
    readonly file: string;
    readonly lines: readonly string[];
}
export interface ClassifyResult {
    readonly entries: readonly RedLineEntry[];
    readonly warnings: readonly string[];
}
/**
 * Classify a single markdown file. Returns 0+ RedLineEntry; one entry per
 * marker hit. Marker hits that appear multiple times on the same line are
 * counted once.
 */
export declare function classifyFile(input: ClassifyFileInput): ClassifyResult;
/**
 * Batch wrapper — classify each input file and flatten the entries.
 */
export declare function classifyFiles(inputs: readonly ClassifyFileInput[]): ClassifyResult;