fix(cli): preserve GitHub tree tap paths

Author: johnnygreco

packages/data-designer/src/data_designer/cli/repositories/plugin_tap_repository.py

@@ -257,7 +257,9 @@ def _normalize_tap_url(url: str) -> str:
             return f"https://raw.githubusercontent.com/{owner}/{repo}/{ref}/{path}"
         if len(segments) >= 4 and segments[2] == "tree":
             ref = segments[3]
-            return f"https://raw.githubusercontent.com/{owner}/{repo}/{ref}/catalog/plugins.json"
+            tap_root = "/".join(segments[4:])
+            catalog_path = f"{tap_root}/catalog/plugins.json" if tap_root else "catalog/plugins.json"
+            return f"https://raw.githubusercontent.com/{owner}/{repo}/{ref}/{catalog_path}"
 
     return url
 

packages/data-designer/tests/cli/repositories/test_plugin_tap_repository.py

@@ -43,6 +43,14 @@ def test_add_tap_normalizes_github_repository_url(tmp_path: Path) -> None:
     assert repository.get_tap("research") == tap
 
 
+def test_add_tap_normalizes_github_tree_url_with_subdirectory(tmp_path: Path) -> None:
+    repository = PluginTapRepository(tmp_path)
+
+    tap = repository.add_tap("research", "https://github.com/acme/dd-plugins/tree/main/custom-catalog")
+
+    assert tap.url == "https://raw.githubusercontent.com/acme/dd-plugins/main/custom-catalog/catalog/plugins.json"
+
+
 def test_tap_aliases_are_case_insensitive(tmp_path: Path) -> None:
     repository = PluginTapRepository(tmp_path)