feat(ui): add AreaDropdown and exclusive toggle with layers panel

New AreaDropdown component for quick station selection (filters by allowed systems, ESC to close)
MapComponent: toggle AreaDropdown via MapMarkerIcon; auto-hide MapLayersControlPanel when dropdown is open and vice versa
fix(alarms): hasActiveAlarm now checks Statis[].Alarm for both array and object shapes
fix(panel): Kabelstrecken now auto-enables TALAS (system-1) when turned on; keeps behavior to disable polylines when TALAS is unchecked; persists visibility to localStorage and emits visibilityChanged
Minor: imports, state wiring, and render guards updated
Affected files:

MapComponent.js
MapLayersControlPanel.js
AreaDropdown.js (new)

components/mainComponent/MapComponent.js

@@ -1160,7 +1160,13 @@ const MapComponent = ({ locations, onLocationUpdate, lineCoordinates }) => {
         )}
         {/* Marker-Icon (line-md) */}
         <button
-          onClick={() => setShowAreaDropdown(v => !v)}
+          onClick={() =>
+            setShowAreaDropdown(v => {
+              const next = !v;
+              if (next) setShowLayersPanel(false); // Dropdown öffnen -> Panel schließen
+              return next;
+            })
+          }
           aria-label="Marker"
           className="rounded-full bg-white/90 hover:bg-white shadow p-1"
           title="Marker"
@@ -1211,7 +1217,13 @@ const MapComponent = ({ locations, onLocationUpdate, lineCoordinates }) => {
         </button>
         {/* Lupe: Koordinaten-Suche ein-/ausblenden */}
         <button
-          onClick={() => setShowLayersPanel(v => !v)}
+          onClick={() =>
+            setShowLayersPanel(v => {
+              const next = !v;
+              if (next) setShowAreaDropdown(false); // Panel öffnen -> Dropdown schließen
+              return next;
+            })
+          }
           aria-label={showLayersPanel ? "Layer-Panel ausblenden" : "Layer-Panel einblenden"}
           className="rounded-full bg-white/90 hover:bg-white shadow p-1"
           title={showLayersPanel ? "Layer-Panel ausblenden" : "Layer-Panel einblenden"}