/**
 * Create a directory inside an existing parent directory.
 *
 * Used by the directory picker in the browser/desktop wrapper so users can
 * scaffold a project folder without leaving the "Select local folder" dialog.
 * Mirrors `paths-list.ts`: same path resolution (`join` over the trimmed
 * parent), same error mapping, and no path whitelist — auth lives on the
 * backend WS relay + team ACL, not on the CLI transport.
 */
import type { DirectoryEntry } from "./paths-list.js";
export interface CreateDirectoryResult {
    entry: DirectoryEntry;
}
/**
 * Validate a new directory name against the cross-platform rules shared
 * with the picker UI. Returns a human-readable error message, or `null`
 * when the name is valid.
 */
export declare function validateNewDirectoryName(name: string): string | null;
/**
 * Create `parent/name` and return its entry. The parent must already exist
 * and be a directory; the target must not exist (`EEXIST` surfaces as a
 * distinguishable "already exists" conflict).
 */
export declare function handleCreateDirectory(input: Record<string, unknown>): Promise<CreateDirectoryResult>;
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