feat: add user dropdown menu with sign-out to top bar

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

it0-web-admin/src/presentation/components/layout/top-bar.tsx

@@ -1,10 +1,53 @@
 'use client';
 
+import { useState, useEffect, useRef } from 'react';
+import { useRouter } from 'next/navigation';
 import { useTenantStore } from '@/stores/zustand/tenant-store';
-import { Search, Bell } from 'lucide-react';
+import { Search, Bell, LogOut, User, Settings } from 'lucide-react';
+
+interface StoredUser {
+  id: string;
+  email: string;
+  name: string;
+  roles: string[];
+}
 
 export function TopBar() {
+  const router = useRouter();
   const { currentTenant } = useTenantStore();
+  const [menuOpen, setMenuOpen] = useState(false);
+  const [user, setUser] = useState<StoredUser | null>(null);
+  const menuRef = useRef<HTMLDivElement>(null);
+
+  useEffect(() => {
+    try {
+      const raw = localStorage.getItem('user');
+      if (raw) setUser(JSON.parse(raw));
+    } catch { /* ignore */ }
+  }, []);
+
+  // Close menu on outside click
+  useEffect(() => {
+    function handleClick(e: MouseEvent) {
+      if (menuRef.current && !menuRef.current.contains(e.target as Node)) {
+        setMenuOpen(false);
+      }
+    }
+    if (menuOpen) document.addEventListener('mousedown', handleClick);
+    return () => document.removeEventListener('mousedown', handleClick);
+  }, [menuOpen]);
+
+  const handleLogout = () => {
+    localStorage.removeItem('access_token');
+    localStorage.removeItem('refresh_token');
+    localStorage.removeItem('user');
+    localStorage.removeItem('current_tenant');
+    router.replace('/login');
+  };
+
+  const initials = user?.name
+    ? user.name.split(' ').map((w) => w[0]).join('').toUpperCase().slice(0, 2)
+    : 'U';
 
   return (
     <header className="h-12 border-b bg-card/50 backdrop-blur-sm flex items-center justify-between px-4 shrink-0">
@@ -37,13 +80,54 @@ export function TopBar() {
         {/* Tenant indicator */}
         <div className="text-xs">
           <span className="text-muted-foreground">Tenant: </span>
-          <span className="font-medium">{currentTenant?.name || 'Not selected'}</span>
+          <span className="font-medium">{currentTenant?.name || currentTenant?.id || 'Not selected'}</span>
         </div>
 
-        {/* User avatar */}
-        <button className="w-7 h-7 rounded-full bg-primary/15 border border-primary/20 flex items-center justify-center text-xs font-semibold text-primary hover:bg-primary/25 transition-colors">
-          A
-        </button>
+        {/* User avatar + dropdown */}
+        <div className="relative" ref={menuRef}>
+          <button
+            onClick={() => setMenuOpen(!menuOpen)}
+            className="w-7 h-7 rounded-full bg-primary/15 border border-primary/20 flex items-center justify-center text-xs font-semibold text-primary hover:bg-primary/25 transition-colors"
+          >
+            {initials}
+          </button>
+
+          {menuOpen && (
+            <div className="absolute right-0 top-full mt-1.5 w-56 bg-card border rounded-lg shadow-lg py-1 z-50">
+              {/* User info */}
+              <div className="px-3 py-2 border-b">
+                <p className="text-sm font-medium truncate">{user?.name || 'User'}</p>
+                <p className="text-xs text-muted-foreground truncate">{user?.email}</p>
+              </div>
+
+              {/* Menu items */}
+              <button
+                onClick={() => { setMenuOpen(false); router.push('/settings'); }}
+                className="w-full flex items-center gap-2 px-3 py-2 text-sm text-muted-foreground hover:text-foreground hover:bg-accent transition-colors"
+              >
+                <Settings className="h-3.5 w-3.5" />
+                Settings
+              </button>
+              <button
+                onClick={() => { setMenuOpen(false); router.push('/users'); }}
+                className="w-full flex items-center gap-2 px-3 py-2 text-sm text-muted-foreground hover:text-foreground hover:bg-accent transition-colors"
+              >
+                <User className="h-3.5 w-3.5" />
+                Users
+              </button>
+
+              <div className="border-t my-1" />
+
+              <button
+                onClick={handleLogout}
+                className="w-full flex items-center gap-2 px-3 py-2 text-sm text-red-500 hover:bg-red-500/10 transition-colors"
+              >
+                <LogOut className="h-3.5 w-3.5" />
+                Sign out
+              </button>
+            </div>
+          )}
+        </div>
       </div>
     </header>
   );