**Bug: PR Discussion tab renders blank on direct URL access
Steps to reproduce:
- Directly access the PR discussion URL (or hard refresh)
- Discussion tab is completely blank
Expected: discussion content visible
Actual: blank white space below the tab bar
Additional info:
- API endpoint returns full data normally:
GET /api/datasets/upstage/dp-bench/discussions/2 → 정상 응답 - When navigating via SPA routing from another HF page,
commits briefly flash then disappear - Reproducible consistently**