fix(shadcn): isolate Nexus CSS vars with --nx- prefix + admin password reset endpoint

frontend/src/components/ModuleView.vue

@@ -361,7 +361,7 @@ async function sendMessage() {
   opacity: 1;
 }
 .task-edit-btn:hover {
-  color: var(--accent);
+  color: var(--nx-accent);
 }
 .task-delete-btn {
   background: none;
@@ -411,7 +411,7 @@ async function sendMessage() {
   align-items: center;
   gap: 0.25rem;
   padding: 0.25rem 0.5rem;
-  background: var(--accent);
+  background: var(--nx-accent);
   color: #fff;
   border: none;
   border-radius: 4px;
@@ -499,7 +499,7 @@ async function sendMessage() {
   color: var(--text-secondary);
 }
 .settings-redirect a {
-  color: var(--accent);
+  color: var(--nx-accent);
   text-decoration: none;
 }
 .settings-redirect a:hover {