feat: auto-generate self-signed certs, hoover modal processing guard, refactor backends/proxy pages

webui/static/style.css

@@ -699,6 +699,42 @@ body {
     text-align: center;
 }
 
+/* Spinner animation for buttons during pending operations */
+@keyframes btn-spin {
+    to { transform: rotate(360deg); }
+}
+
+.btn-spinner {
+    display: inline-block;
+    width: 1em;
+    height: 1em;
+    margin: 0 0.5em;
+    border: 2px solid currentColor;
+    border-right-color: transparent;
+    border-radius: 50%;
+    animation: btn-spin 0.5s linear infinite;
+    vertical-align: middle;
+}
+
+/* Pending deletion row indicator */
+.pending-delete td {
+    opacity: 0.5;
+}
+
+.pending-delete td:last-child {
+    border-left: 3px solid var(--danger);
+}
+
+.pending-delete td:first-child {
+    border-left: 0;
+}
+
+/* Disabled button styling */
+.btn:disabled {
+    opacity: 0.6;
+    cursor: not-allowed;
+}
+
 /* ApplyConfirm modal */
 .apply-subsystem-row {
     display: flex;