feat(extensions): code-first frontend contributions (#38346)

superset-extensions-cli/tests/test_cli_init.py

@@ -223,21 +223,8 @@ def test_extension_json_content_is_correct(
     # Load and verify more complex nested structures
     content = load_json_file(extension_json_path)
 
-    # Verify frontend section exists and has correct structure
-    assert "frontend" in content
-    frontend = content["frontend"]
-    assert "contributions" in frontend
-    assert "moduleFederation" in frontend
-    assert frontend["contributions"] == {
-        "commands": [],
-        "views": {},
-        "menus": {},
-        "editors": [],
-    }
-    assert frontend["moduleFederation"] == {
-        "exposes": ["./index"],
-        "name": "testOrg_testExtension",
-    }
+    # Verify frontend section is not present (contributions are code-first)
+    assert "frontend" not in content
 
     # Verify backend section exists and has correct structure
     assert "backend" in content