- Expanded research pool to 9 topics (was 3), evergreen to 12 (was 3)
- Conference topics: added Photonics West, CIOE, NFOEC follow-up, year-end review
- Standards topics: 3 rotating variants (IEEE tracker, SFF-8024 registry, OIF CEI-112G)
- seededShuffle(): day-of-year as seed — stable within the day, different every day
- API response adds refreshes_at (next midnight UTC) for frontend countdown
- Dashboard subtitle shows 'rotates daily · next refresh in Xh'
- Hot topic cards now pass full title + angle into generateBlog() correctly
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