Merge pull request #105 from Ark0N/beta/settings-toggles

feat(settings): toggle gesture control + multi-monitor button (off by default)

src/web/public/styles.css

@@ -846,6 +846,13 @@ body {
   transform: rotate(45deg);
 }
 
+/* Multi-monitor header button: hidden by default (opt-in via App Settings →
+   Display → "Header Displays"). The server strips this class at render when the
+   setting is on; the client toggles it live on save. */
+.btn-multimonitor--hidden {
+  display: none !important;
+}
+
 .btn-icon-header.btn-settings {
   width: 30px;
   height: 30px;