feat(auth): implement better authentication system with user sessions and password management

- Added user, session, account, and verification models to Prisma schema.
- Integrated better-auth for user authentication with email and password.
- Created auth middleware for session validation.
- Implemented auth context and client in frontend for managing user sessions.
- Added login and settings pages for user authentication and password management.
- Updated routes to include authentication checks and user-specific content.
- Enhanced UI components to reflect authentication state.

apps/frontend/src/components/layout/Sidebar.tsx

@@ -1,5 +1,5 @@
 import { Link } from "@tanstack/react-router";
-import { FileText, LayoutDashboard, TrendingUp, Wallet } from "lucide-react";
+import { FileText, LayoutDashboard, Settings, TrendingUp, Wallet } from "lucide-react";
 import { cn } from "@/lib/utils";
 
 const navItems = [
@@ -9,6 +9,10 @@ const navItems = [
   { to: "/quotes/belo", label: "BELO", icon: TrendingUp },
 ];
 
+const bottomItems = [
+  { to: "/settings", label: "Configuración", icon: Settings },
+];
+
 interface SidebarProps {
   open: boolean;
   onClose: () => void;
@@ -48,6 +52,20 @@ export function Sidebar({ open, onClose }: SidebarProps) {
             </Link>
           ))}
         </nav>
+        <div className="border-t p-3">
+          {bottomItems.map((item) => (
+            <Link
+              key={item.to}
+              to={item.to}
+              activeProps={{ className: "bg-sidebar-accent text-sidebar-accent-foreground font-medium" }}
+              className="flex items-center gap-3 rounded-lg px-3 py-2 text-sm text-sidebar-foreground/70 transition-colors hover:bg-sidebar-accent hover:text-sidebar-accent-foreground"
+              onClick={onClose}
+            >
+              <item.icon className="size-4" />
+              {item.label}
+            </Link>
+          ))}
+        </div>
       </aside>
     </>
   );