Fix

Author: shangyian

datajunction-server/datajunction_server/internal/namespaces.py

@@ -291,8 +291,10 @@ def resolve_git_info_from_map(
         "branch": branch,
         "default_branch": default_branch,
         "path": config_ns.git_path,
-        "is_default_branch": bool(
-            branch and default_branch and branch == default_branch,
+        "is_default_branch": (
+            branch is None  # root namespace — no branch means it IS the default
+            or not default_branch  # no default configured — assume default
+            or branch == default_branch
         ),
         "parent_namespace": branch_ns.parent_namespace if branch_ns else None,
         "git_only": config_ns.git_only,