1import { resolve } from "node:path";
 2
 3/**
 4 * Expand a leading ~ in a file path to the user's home directory.
 5 * Use for paths outside the workspace (e.g. system_prompt_path).
 6 * Workspace-sandboxed paths should NOT use this.
 7 */
 8export function expandHomePath(filePath: string): string {
 9  const home = process.env["HOME"];
10  if (!home) return filePath;
11
12  if (filePath === "~") return home;
13  if (filePath.startsWith("~/")) return resolve(home, filePath.slice(2));
14
15  return filePath;
16}