- lazyHook reconnected() no longer re-runs mounted() on hooks that are
  already loaded (Leaflet double-init, duplicate fetches, second WebGL
  canvas on every reconnect)
- Skew-T chart repaints on hour/station change (container keyed on the
  rendered svg so the hook remounts)
- ElevationProfile hook gains updated() so the contact profile canvas
  re-renders when HRRR k-factor/sounding data lands after first paint
- New NavKeys hook replaces phx-window-keydown on /map: ignores arrows
  inside inputs/selects and the Leaflet container; map hook also
  stopPropagation()s its arrow handling
- Contact observation/sounding tables sort observed_at chronologically
  (DateTime sorter) instead of structurally
- restore_saved caps the localStorage point list at @max_saved_points
- /map coverage banner copy matches the actual HRRR+HRDPS coverage
- Log the sounding-fetch enqueue failure instead of dropping it

@@ -0,0 +9,4 @@
+
+// Keys aimed at a control, an editable region, a link/button, or the
+// map (which owns its own arrow-key contract) are not navigation.
+const IGNORED_TARGET =

@@ -377,6 +382,7 @@ defmodule MicrowavepropWeb.MapLive do
     else
       restored =
         points
+        |> Enum.take(@max_saved_points)

@@ -1219,3 +1218,1 @@
-          queue: "propagation",
-          worker: "Microwaveprop.Workers.PropagationGridWorker",
-          args: %{},
+        struct!(Microwaveprop.Propagation.GridTask, %{

@@ -0,0 +12,4 @@
+const IGNORED_TARGET =
+  "input,select,textarea,[contenteditable],a,button,.leaflet-container"
+
+export const NavKeys: Partial<NavKeysHook> = {