feat: add window with profile and logout buttons. add notification component

src/widgets/wallet-header/ui/WalletHeader.module.css

@@ -39,10 +39,55 @@
   color: #ff4d4d;
 }
 
+.accountWrapper {
+  position: relative;
+}
+
 .account {
   display: flex;
   align-items: center;
   gap: 10px;
+  background: none;
+  border: none;
+  cursor: pointer;
+  padding: 0;
+}
+
+.dropdown {
+  position: absolute;
+  top: calc(100% + 12px);
+  right: 0;
+  background: var(--bg-card, #1a1a2e);
+  border: 1px solid var(--glass-border);
+  border-radius: 10px;
+  overflow: hidden;
+  min-width: 180px;
+  z-index: 100;
+  display: flex;
+  flex-direction: column;
+}
+
+.dropdownItem {
+  display: block;
+  padding: 12px 16px;
+  font-size: 14px;
+  color: var(--text-secondary);
+  text-decoration: none;
+  background: none;
+  border: none;
+  cursor: pointer;
+  text-align: left;
+  width: 100%;
+  transition: background 0.15s, color 0.15s;
+}
+
+.dropdownItem:hover {
+  background: var(--glass-border);
+  color: var(--text-primary);
+}
+
+.dropdownItem.danger:hover {
+  color: var(--error);
 }
 
 .avatar {