Top Scores card shows "No scores recorded yet" despite valid iScored scores

After linking iScored game IDs to machines, the Info tab Top Scores card displays "No scores recorded yet" even though the iScored API returns real scores.

Affected machines (confirmed via iScored API):
- ACDC (iScored #103042) — 9 scores returned
- AVTR (iScored #94818) — 10 scores returned
- AIQ (iScored #78372) — 10 scores returned

The "Add score" button works correctly (links to the right iScored game page). The issue is in the score-fetching or rendering pipeline — the card never shows fetched scores.

Likely area: TopScoresCard.tsx / getTopScoresForMachine in src/lib/iscored/client.ts.