export declare const TEMPLATE_LAYER_FILE = "template-layer.json";
export declare const LAYER_PATCH_SUFFIX = ".patch";
/** Files the published core strips from its bundled template copies. */
export declare const PACKAGED_TEMPLATE_EXCLUDE: RegExp;
export interface TemplateLayer {
    base: string;
    delete: string[];
}
/**
 * A bundled template that holds only what it changes on top of another
 * template. Materialize copies the base, deletes `delete`, applies each
 * `<file>.patch` (a unified diff) to the base's `<file>`, copies the layer's
 * other files as new files, and merges the layer's package.json fields into
 * the base's. A patch whose context no longer matches the base fails the
 * materialize instead of silently dropping the change.
 */
export declare function readTemplateLayer(templateDir: string): TemplateLayer | null;
/**
 * Applies the layer onto `dest`, which already holds the base tree. `only`
 * limits it to one subtree (for example `.agents/skills`) and skips the
 * package.json merge.
 */
export declare function applyTemplateLayer(layerDir: string, layer: TemplateLayer, dest: string, options?: {
    only?: string;
}): void;
/** The unified diff a layer stores for `rel` to turn `before` into `after`. */
export declare function createLayerPatch(rel: string, before: string, after: string): string;
/** Layer-relative paths of every file the layer contributes. */
export declare function listLayerFiles(layerDir: string, rel?: string): string[];