Jun 22

1. 20:59

   Re-apply Py-ART elimination on stable base: xradar fork = sole ingest, dealias via region_dealias.sweep_folds on xradar arrays (Nyquist from ds['nyquist_velocity'], max|V| fallback), bundled nexrad_sites.py coords (replaces pyart NEXRAD_LOCATIONS), removed _process_pyart fallback, dropped arm-pyart. Server-side only — no live-default/UI changes (built on a4cbd62).

   swnesbitt
   e4c1ca9