Preserve detail panel and range circle across score updates

- Add phx-update="ignore" to detail-panel so LiveView patches don't wipe it
- Re-request point_detail after scores update to refresh with new data
- Range circles persist across updates since they're on a separate layer

assets/js/propagation_map_hook.js

@@ -329,6 +329,11 @@ export const PropagationMap = {
     this.handleEvent("update_scores", ({ scores }) => {
       topbar.hide()
       this.renderScores(scores)
+
+      // If a point was selected, refresh its detail with the new data
+      if (this.clickedLatLng && this.detailPanel && this.detailPanel.style.display !== "none") {
+        this.pushEvent("point_detail", { lat: this.clickedLatLng[0], lon: this.clickedLatLng[1] })
+      }
     })
 
     this.bandInfo = JSON.parse(this.el.dataset.bandInfo || "{}")

lib/microwaveprop_web/live/map_live.ex

@@ -280,9 +280,10 @@ defmodule MicrowavepropWeb.MapLive do
           </div>
         </div>
 
-        <%!-- Point detail panel (populated by JS on click) --%>
+        <%!-- Point detail panel (populated by JS on click, ignored by LiveView patches) --%>
         <div
           id="detail-panel"
+          phx-update="ignore"
           class="bg-neutral text-neutral-content shadow rounded-box border border-base-300 overflow-hidden"
           style="display:none;"
         >