feat: rebuild admin account management and ticket assignment

src/styles/global.css

@@ -1117,3 +1117,15 @@ textarea.form-control {
 .wrap { flex-wrap: wrap; }
 .mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }
 .text-ellipsis { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+
+.automatic-assignment-note {
+  padding: 12px 14px;
+  border-left: 2px solid var(--accent);
+  background: var(--surface-2);
+}
+.automatic-assignment-note p {
+  margin: 5px 0 0;
+  color: var(--text-muted);
+  font-size: 13px;
+  line-height: 1.45;
+}