Function mv

packages/shell/src/tests/workspace.test.ts:246–252

(src: string, dest: string)

      if (content !== undefined) files.set(dest, content);
    },
    async mv(src: string, dest: string) {
      const content = files.get(src);
      if (content !== undefined) {
        files.set(dest, content);
        files.delete(src);
      }
    },
    async diff(_a: string, _b: string) {
      return "";
    },