Graham McIntire f8dee5e670 fix: pre-compute refractivity in Rust profile entries, fall back in SkewT ... Rust cell_to_profile_entry now writes surface_refractivity and min_refractivity_gradient at the cell level so Elixir consumers have a guaranteed fallback when SoundingParams.derive hits levels without dewpoint. The SkewT build_profile_assigns falls back to these pre-computed cell keys when the derived map has nil for those fields.		2026-05-08 13:02:15 -05:00
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prop_grid_rs	fix: pre-compute refractivity in Rust profile entries, fall back in SkewT	2026-05-08 13:02:15 -05:00