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.

lib/redis/session.ts

@@ -9,21 +9,29 @@ const SESSION_PREFIX = "session:";
 const USER_SESSION_PREFIX = "user_session:";
 const SESSION_TTL = 60 * 60 * 24 * 7; // 7 dias (mesmo que refresh token)
 
+export interface SessionTierInfo {
+  subscriptionTierId: number | null;
+  subscriptionTierSlug: string | null;
+  subscriptionTierName: string | null;
+  subscriptionTierLevel: number | null;
+}
+
 export interface SessionData {
   userId: number;
   username: string;
   email: string;
   accessToken: string;
   createdAt: number;
+  subscriptionTierId: number | null;
+  subscriptionTierSlug: string | null;
+  subscriptionTierName: string | null;
+  subscriptionTierLevel: number | null;
 }
 
 /**
  * Cria ou atualiza uma sessão
  */
-export async function setSession(
-  sessionId: string,
-  data: SessionData
-): Promise<void> {
+export async function setSession(sessionId: string, data: SessionData): Promise<void> {
   try {
     const client = getRedisClient();
     if (!client.isOpen) {
@@ -46,9 +54,7 @@ export async function setSession(
 /**
  * Obtém dados de uma sessão
  */
-export async function getSession(
-  sessionId: string
-): Promise<SessionData | null> {
+export async function getSession(sessionId: string): Promise<SessionData | null> {
   try {
     const client = getRedisClient();
     if (!client.isOpen) {