Update connection status indicator

src/web/public/css/theme-custom.css

@@ -285,23 +285,14 @@
   flex: 0 0 auto;
 }
 
-.status-dot::after {
-  content: '';
-  position: absolute;
-  inset: -0.28rem;
-  border-radius: inherit;
-  opacity: 0;
-  transform: scale(0.7);
-}
-
 .status-dot--online {
   background: #28a745;
   box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.2);
 }
 
-.status-dot--online::after {
-  background: rgba(40, 167, 69, 0.32);
-  animation: status-dot-pulse 1.8s ease-out infinite;
+.status-dot--idle {
+  background: #0d6efd;
+  box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.2);
 }
 
 .status-dot--offline {
@@ -314,28 +305,6 @@
   box-shadow: 0 0 0 0.2rem rgba(173, 181, 189, 0.18);
 }
 
-.status-dot--unknown::after {
-  background: rgba(173, 181, 189, 0.26);
-  animation: status-dot-pulse 1.8s ease-out infinite;
-}
-
-@keyframes status-dot-pulse {
-  0% {
-    opacity: 0.55;
-    transform: scale(0.7);
-  }
-
-  70% {
-    opacity: 0;
-    transform: scale(1.75);
-  }
-
-  100% {
-    opacity: 0;
-    transform: scale(1.75);
-  }
-}
-
 /* Account menu */
 
 .user-menu-avatar {