refactor: revew all design of services, clients, deadcode, ...

components/login/login-loading.tsx

@@ -0,0 +1,17 @@
+export function LoginLoading() {
+  return (
+    <div className="min-h-screen bg-gradient-to-br from-slate-950 via-slate-900 to-slate-950 relative overflow-hidden">
+      <div className="absolute inset-0 bg-[radial-gradient(ellipse_at_top,_var(--tw-gradient-stops))] from-blue-900/20 via-slate-900 to-slate-950" />
+      <div className="absolute inset-0 bg-grid-white/5 bg-[size:50px_50px]" />
+
+      <div className="relative z-10 container mx-auto py-16 px-6">
+        <div className="flex items-center justify-center min-h-[400px]">
+          <div className="text-center">
+            <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-blue-400 mx-auto mb-4"></div>
+            <p className="text-white">Chargement...</p>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}