Live-update soundings and surface observations on contact page

- WeatherFetchWorker broadcasts on ASOS and RAOB completion
- Contact show page subscribes and reloads weather data on receipt
- Loading spinners for soundings and surface observations when queued
- Propagation analysis recomputed with new sounding duct data

lib/microwaveprop/workers/weather_fetch_worker.ex

@@ -39,6 +39,12 @@ defmodule Microwaveprop.Workers.WeatherFetchWorker do
                 if row.observed_at, do: Weather.upsert_surface_observation(station, row)
               end)
 
+              Phoenix.PubSub.broadcast(
+                Microwaveprop.PubSub,
+                "contact_enrichment:weather",
+                {:weather_ready, %{station_id: station_id}}
+              )
+
               :ok
 
             {:error, reason} ->
@@ -96,6 +102,13 @@ defmodule Microwaveprop.Workers.WeatherFetchWorker do
                 end
 
               Weather.upsert_sounding(station, sounding_attrs)
+
+              Phoenix.PubSub.broadcast(
+                Microwaveprop.PubSub,
+                "contact_enrichment:weather",
+                {:weather_ready, %{station_id: station_id}}
+              )
+
               :ok
 
             {:ok, []} ->

lib/microwaveprop_web/live/contact_live/show.ex

@@ -24,6 +24,7 @@ defmodule MicrowavepropWeb.ContactLive.Show do
     if connected?(socket) do
       Phoenix.PubSub.subscribe(Microwaveprop.PubSub, "contact_enrichment:#{contact.id}")
       Phoenix.PubSub.subscribe(Microwaveprop.PubSub, "contact_enrichment:hrrr")
+      Phoenix.PubSub.subscribe(Microwaveprop.PubSub, "contact_enrichment:weather")
     end
 
     weather = load_weather(contact)
@@ -42,6 +43,7 @@ defmodule MicrowavepropWeb.ContactLive.Show do
        contact: contact,
        surface_observations: weather.surface_observations,
        soundings: weather.soundings,
+       weather_status: weather_status(weather, contact),
        solar: solar,
        hrrr: hrrr,
        hrrr_status: hrrr_status,
@@ -154,6 +156,44 @@ defmodule MicrowavepropWeb.ContactLive.Show do
     end
   end
 
+  def handle_info({:weather_ready, _info}, socket) do
+    contact = socket.assigns.contact
+    weather = load_weather(contact)
+    soundings = weather.soundings
+
+    hrrr_path = Weather.hrrr_profiles_for_path(contact)
+    hrrr = List.first(hrrr_path)
+    terrain = socket.assigns.terrain
+    elevation_profile = socket.assigns.elevation_profile
+
+    # Recompute propagation analysis with new sounding data (duct detection)
+    propagation_analysis =
+      if elevation_profile || hrrr do
+        build_propagation_analysis(contact, hrrr, terrain, elevation_profile, soundings)
+      else
+        socket.assigns.propagation_analysis
+      end
+
+    {:noreply,
+     assign(socket,
+       surface_observations: weather.surface_observations,
+       soundings: soundings,
+       weather_status: :loaded,
+       propagation_analysis: propagation_analysis
+     )}
+  end
+
+  defp weather_status(weather, contact) do
+    has_data = weather.surface_observations != [] or weather.soundings != []
+
+    cond do
+      has_data -> :loaded
+      contact.weather_queued -> :queued
+      contact.pos1 -> :queued
+      true -> :unavailable
+    end
+  end
+
   defp toggle_sort(current_field, current_order, new_field) do
     if current_field == new_field && current_order == "asc",
       do: {new_field, "desc"},
@@ -494,7 +534,16 @@ defmodule MicrowavepropWeb.ContactLive.Show do
 
       <h2 class="text-base font-semibold mb-2">Soundings</h2>
       <%= if @soundings == [] do %>
-        <p class="text-sm text-base-content/50 italic">No soundings found nearby.</p>
+        <div class="text-sm text-base-content/50 italic">
+          <%= if @weather_status == :queued do %>
+            <span class="flex items-center gap-2">
+              <span class="loading loading-spinner loading-sm"></span>
+              Fetching sounding data from nearby stations...
+            </span>
+          <% else %>
+            No soundings found nearby.
+          <% end %>
+        </div>
       <% else %>
         <%= for s <- @soundings do %>
           <div class="mb-6 border border-base-300 rounded-lg">
@@ -660,7 +709,16 @@ defmodule MicrowavepropWeb.ContactLive.Show do
 
       <h2 class="text-base font-semibold mb-2">Surface Observations</h2>
       <%= if @surface_observations == [] do %>
-        <p class="text-sm text-base-content/50 italic">No surface observations found nearby.</p>
+        <div class="text-sm text-base-content/50 italic">
+          <%= if @weather_status == :queued do %>
+            <span class="flex items-center gap-2">
+              <span class="loading loading-spinner loading-sm"></span>
+              Fetching surface observations from nearby stations...
+            </span>
+          <% else %>
+            No surface observations found nearby.
+          <% end %>
+        </div>
       <% else %>
         <div class="overflow-x-auto">
           <table class="table table-xs table-zebra">