feat(weather): add globe wind, observed weather and cyclone context (#617)

Wind (NOAA GFS and ECMWF IFS: animated particles, colour field, a reading at map centre), observed weather (NOAA MRMS radar, GOES and NESDIS infrared clouds, lightning density) on one shared history timeline, NHC and CPHC cyclone advisories with tracks and cones, and a WEATHER panel in the right rail. On 3D Tiles the observed products render as raised shells with a sharper window around the view.

Co-authored-by: Gustavo Beneduzi <[email protected]>
Co-authored-by: Daniel Slay <[email protected]>
Co-authored-by: Rehaan Delmotra <[email protected]>
Co-authored-by: Cursor Agent <[email protected]>

src/ui/templates/context.html

@@ -1,5 +1,17 @@
   <!-- Global Context is deliberately independent from the left layer accordion. -->
   <aside id="right-context-rail">
+    <div id="weather-panel" class="panel-collapsible" data-panel-id="weather-panel" hidden>
+      <div class="panel-glow"></div>
+      <div class="weather-panel-inner">
+        <div class="panel-header">
+          <span class="panel-title">WEATHER</span>
+          <span id="weather-panel-count" aria-label="Active weather products">0</span>
+          <span class="panel-divider"></span>
+          <button class="panel-collapse-btn" data-collapse-target="weather-panel" type="button" title="Collapse panel">▼</button>
+        </div>
+        <div id="weather-panel-body" data-rail-scroller></div>
+      </div>
+    </div>
     <div id="global-context-panel" class="panel-collapsible collapsed" data-panel-id="global-context-panel">
       <div class="panel-glow"></div>
       <div class="global-context-panel-inner">