Merge remote-tracking branch 'origin/p--fix-gh-list-dir' into copilot/fix-github-actions-workflow-test-failure

Co-authored-by: p- <176818+p-@users.noreply.github.com>

Author: Copilot

pyproject.toml

@@ -120,3 +120,8 @@ ignore = [
   "S101",      # Use of assert (standard in pytest)
   "SLF001",    # Private member accessed (tests legitimately access module internals)
 ]
+
+[tool.pytest.ini_options]
+markers = [
+  "xdist_group: Group tests to run on the same xdist worker",
+]

src/seclab_taskflows/mcp_servers/gh_file_viewer.py

@@ -283,10 +283,13 @@ async def list_directory_from_gh(
     r = await call_api(url=f"https://api.github.com/repos/{owner}/{repo}/contents/{path}", params={})
     if isinstance(r, str):
         return r
-    if not r.json():
+    data = r.json()
+    if not data:
         return json.dumps([], indent=2)
+    if not isinstance(data, list):
+        return f"Path '{path}' is not a directory."
 
-    content = [item["path"] for item in r.json()]
+    content = [item["path"] for item in data]
     return json.dumps(content, indent=2)