fix(coordinates): handle NAM afwaca grid structure differences

feat(gfs-fallback): add GFS model as fallback for global REFC coverage

fix(nam-products): prioritize afwaca product for broader geographic coverage

fix(map-view): center map on North America to show full NAM radar coverage

fix(validation): improve NAM grid support and remove obsolete RAP warnings

fix(coordinates): improve validation for NAM North American domain coverage

feat(north-america): implement NAM model for full North American REFC coverage

fix(rap-limitations): add warnings about RAP model radar data limitations

debug(rap-availability): add debugging to diagnose RAP data access issues

fix(rap-product): change from 'sfc' to 'anl' product type for RAP model

feat(model-switch): convert from HRRR to RAP forecast model

fix(alignment-consistency): unify coordinate handling across all visualization modes and add validation

fix(hrrr-projection): implement proper Lambert Conformal projection and curvilinear grid handling

fix(radar-alignment): correct latitude orientation and coordinate mapping

fix(hrrr-domain): align coordinate validation with official NOAA HRRR specifications

fix(radar-coordinates): resolve longitude format and validation issues

fix(hrrr-radar): improve coordinate validation and alignment with official HRRR specifications

feat(comparison): add side-by-side Plotly vs Leaflet maps and KMZ export for alignment validation

fix(radar-alignment): implement HRRR Lambert Conformal projection validation and coordinate correction

feat(leaflet-homography): inline 4-corner projective transform (matrix3d) for perfect alignment; no external plugins; keeps transparent PNG frame animation

fix(leaflet): add robust fallback to simple ImageOverlay if rotated plugin fails; keep animation loop

fix(leaflet-align): use Leaflet.ImageOverlay.Rotated (projective warp with TL/TR/BL) for precise alignment; keep transparent PNG frames

fix(leaflet-align): use affine three-corner transform in overlay to align frames to HRRR grid; keeps transparent PNG frames;

feat(leaflet): animate overlay using transparent PNG frames for proper alpha; fix(grib): broaden search across cache, include immediate hours, and global recursive scan

fix(grib): robust locate by scanning Herbie day dir for subset files; ensure path exists;

fix(export): remove local import causing 'os referenced before assignment'; fix(leaflet): render overlay in iframe srcdoc to ensure JS runs in Gradio; improve GRIB locate/download

fix(leaflet): ensure GIF loops + render via Folium or Leaflet; disable SSR so JS runs; fix(raw-grib): force Herbie download and copy into exports

feat(anim): GIF loops forever; add Leaflet map overlay of animation; feat(download): copy raw GRIB2 to exports for direct download via gr.File

feat(radar): default max detail and 0 dBZ; feat(ui): Animate checkbox + GIF output; feat(download): add raw HRRR GRIB2 download; fix(export): keep Herbie path and better erroring; deps: add imageio

feat(ui): add Min dBZ slider; wire to radar rendering; feat(export): add GRIB2 export for radar with values below threshold set to missing using eccodes

fix(radar): remove stray teal dots by suppressing density fallback when raster present; raise radar min threshold to 5 dBZ; set raster opacity to 1.0 for solid look

feat(radar): add smooth raster image layer via mapbox image overlay for fused reflectivity; keep choropleth as tertiary fallback; include invisible colorbar trace

feat(radar): add Choroplethmapbox grid fallback for stable solid reflectivity when Contourmapbox unavailable; keep density as last resort

feat(radar): add Radar Detail slider; render reflectivity as solid grid via Contourmapbox with fallback; wire slider to performance/detail

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