Fix DANDI sandbox upload broken by dandi-cli 0.73.2

dandi-cli 0.73.2 (released Nov 15, 2025) changed API key lookup from
the generic DANDI_API_KEY env var to instance-specific env vars (e.g.
DANDI_SANDBOX_API_KEY for the sandbox). This broke sandbox uploads
because nwb-guide only set DANDI_API_KEY.

Now set both DANDI_API_KEY and DANDI_SANDBOX_API_KEY when uploading
to the sandbox, maintaining compatibility with both old and new dandi.

See: dandi/dandi-cli#1731

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people

src/pyflask/manageNeuroconv/manage_neuroconv.py

@@ -1399,6 +1399,7 @@ def upload_project_to_dandi(
     from neuroconv.tools.data_transfers import automatic_dandi_upload
 
     # CONVERSION_SAVE_FOLDER_PATH.mkdir(exist_ok=True, parents=True)  # Ensure base directory exists
+
     # Set API key env var for both old (< 0.73.2) and new dandi versions
     os.environ["DANDI_API_KEY"] = api_key
     if sandbox: