/**
 * Repository scan for semantic indexing: enumerates indexable source files
 * using the same ignore-aware walk the native find/grep fallbacks use, and
 * totals their bytes so the caller can apply the size threshold.
 */
export interface RepoScanFile {
    /** Absolute path. */
    abs: string;
    /** POSIX path relative to the scan root. */
    rel: string;
    /** File size in bytes. */
    size: number;
    /** mtime in ms. */
    mtimeMs: number;
}
export interface RepoScanResult {
    files: RepoScanFile[];
    totalBytes: number;
}
/**
 * Enumerate indexable files under `root`: respects hierarchical `.gitignore`,
 * always skips `.git`/`node_modules`, drops binary-ish extensions and files
 * over 1MB. Returns files plus their byte total for threshold checks.
 */
export declare function scanRepo(root: string, signal?: AbortSignal): RepoScanResult;
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