fix: CLAUDE.md compatibility for GEMINI.md '@' file import behavior (#2978)

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Co-authored-by: Allen Hutchison <adh@google.com>

packages/cli/src/config/config.test.ts

@@ -494,6 +494,7 @@ describe('Hierarchical Memory Loading (config.ts) - Placeholder Suite', () => {
         '/path/to/ext3/context1.md',
         '/path/to/ext3/context2.md',
       ],
+      'tree',
       {
         respectGitIgnore: false,
         respectGeminiIgnore: true,