SPEC-P1: Extended Weather Fields & Current-Adjusted Routing#25

Merged

SL-Mar merged 15 commits intodevelopmentfrom

feat/extended-weather-fields

Feb 12, 2026

Commits on Feb 12, 2026

Implement SPEC-P1: Extended Weather Fields & Current-Adjusted Routing

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Fix NaN rendering and unit issues in extended weather layers

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Fix ice layer using wrong CMEMS dataset (hourly has no siconc)

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Replace weather color ramps with WMO-standard meteorological palettes

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Add 10-day ice forecast timeline support

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Fix forecast timeline to derive slider range from actual DB data

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Fix ice forecast stuck at 9/10: use actual frame count instead of hardcoded 10

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Fix forecast frame flashing: repaint tile canvases in-place

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Fix wind forecast heatmap not updating between frames

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Fix wind forecast frames returning empty: add pygrib + GFS run fallback

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Eliminate forecast frame flicker with offscreen composite rendering

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Revert composite canvas, defer clearRect to just before drawImage

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Add file cache for wind forecast frames — process once, serve instantly

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Fix particle layer blinking: split into two-effect architecture

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Improve forecast rendering performance across all weather layers

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