The /summary endpoint was fetching the most recent upload regardless of
vertical, which on dev was a PRDCT_VSO multi-vertical upload. Now it
looks for AEO uploads (vertical IS NULL) first, then falls back to the
NTS_AEO multi-vertical upload.
The /items endpoint now includes items from both vertical IS NULL and
vertical = 'NTS_AEO' so the AEO compliance page shows devices uploaded
through either flow.