theme switched disabled using theme option

glance-system/glance-kisfenyo.yaml

@@ -47,6 +47,7 @@ data:
       hide-footer: true
 
     theme:
+      disable-picker: true
       background-color: 210 35 12      # Was: 280 30 15 (purple → blue)
       primary-color: 200 70 60         # Was: 280 60 70 (purple → cyan-blue)
       positive-color: 150 55 50        # Was: 120 50 50 (green → teal-green, matches better)
@@ -692,21 +693,6 @@ data:
       background-color: transparent !important;
     }
 
-    /* =========================================================================
-       HIDE THEME SWITCHER
-       ========================================================================= */
-    .theme-picker,
-    .theme-picker.self-center,
-    .current-theme-preview,
-    div[class*="theme-picker"] {
-      display: none !important;
-      visibility: hidden !important;
-      opacity: 0 !important;
-      width: 0 !important;
-      height: 0 !important;
-      overflow: hidden !important;
-    }
-
     /* =========================================================================
        WIDGET TITLES
        The "WEATHER", "NEWS & FEEDS", etc. headers on each widget