feat(auth): include subscription tier in token and session payload

- Adds subscription tier info to access/refresh tokens.
- Stores tier details in session Redis record.
- Returns tier data in login/register response.
- Uses default tier when user has none.

components/Header.tsx

@@ -31,6 +31,7 @@ import { useSession } from "@/lib/hooks/use-session";
 import Link from "next/link";
 import { useState, useEffect } from "react";
 import { LogOut, User } from "lucide-react";
+import { Badge } from "@/components/ui/badge";
 
 export default function Header() {
   const t = useTranslations("header.nav");
@@ -53,6 +54,13 @@ export default function Header() {
     { href: `/${locale}/apoiar`, label: t("support"), highlight: true },
   ];
 
+  const navLinks = [
+    ...links,
+    ...(isAuthenticated && user?.userId === 1
+      ? [{ href: `/${locale}/admin/subscriptions`, label: "Admin" }]
+      : []),
+  ];
+
   const handleLogout = async () => {
     await logout();
   };
@@ -73,7 +81,7 @@ export default function Header() {
         {/* Desktop Navigation */}
         <NavigationMenu className="hidden md:flex">
           <NavigationMenuList>
-            {links.map(({ href, label, highlight }) => (
+            {navLinks.map(({ href, label, highlight }) => (
               <NavigationMenuItem key={href}>
                 <NavigationMenuLink asChild>
                   <Link
@@ -103,6 +111,11 @@ export default function Header() {
           
           {/* Notifications */}
           {mounted && isAuthenticated && <NotificationBell />}
+          {mounted && isAuthenticated && user?.subscriptionTier && (
+            <Badge variant="outline" className="uppercase">
+              {user.subscriptionTier.slug}
+            </Badge>
+          )}
           
           {/* Auth Section */}
           {!mounted ? (
@@ -172,7 +185,7 @@ export default function Header() {
 
         {/* Mobile Menu */}
         <div className="md:hidden">
-          <MobileMenu links={links} />
+          <MobileMenu links={navLinks} />
         </div>
       </div>