/**
 * Per-namespace JSON manifest for incremental `logosdb_index_file`:
 * maps absolute file path → last indexed mtime/size/chunk_size and row ids for deletion on change.
 */
export declare const MANIFEST_VERSION: 1;
export type FileIndexEntry = {
    mtimeMs: number;
    size: number;
    chunkSize: number;
    /** Chunking strategy used when this file was indexed ("auto" | "line" | "section" | "legacy"). */
    chunkMode?: string;
    ids: number[];
};
export type FileIndexManifest = {
    version: typeof MANIFEST_VERSION;
    files: Record<string, FileIndexEntry>;
};
export declare function manifestPath(logosdbPath: string, namespace: string): string;
export declare function loadManifest(filePath: string): FileIndexManifest;
export declare function saveManifest(filePath: string, manifest: FileIndexManifest): void;
/** True if `file` is `root` or a file inside directory `root` (both absolute, real paths). */
export declare function isUnderRoot(file: string, root: string): boolean;
export interface LogosDbLike {
    delete(id: number): void;
}
/**
 * Remove manifest entries (and delete stored rows) for paths under `rootDir` that are not in `currentFiles`.
 */
export declare function pruneRemovedPaths(rootDir: string, currentFiles: Set<string>, manifest: FileIndexManifest, db: LogosDbLike): number;
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