Swap the Energi Data Service datasets (DayAheadPrices + Elspotprices) for elprisenligenu.dk's public hourly JSON API. The new source covers both historical and post-2025 dates — previously, Elspotprices was empty for all 2026 dates and DayAheadPrices was scoped to tomorrow only, leaving days like 2026-04-07 uncovered. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>