feat(market): add Minha Intenções tab with panel, hook, and badge

- Introduced "Minhas Intenções" tab visible only to logged-in users.
- Integrated MyPurchaseIntentionsPanel and useMyPurchaseIntentions hook.
- Added tab badge showing count of pending intentions.
- Extended session API to include user’s main character for downstream features.

app/api/auth/session/route.ts

@@ -3,6 +3,7 @@ import { cookies } from "next/headers";
 import { secureLogger } from "@/lib/secure-logger";
 import { getSession, refreshSession, deleteSession } from "@/lib/redis/session";
 import { verifyAccessToken } from "@/lib/auth/jwt";
+import { getMainCharacter } from "@/lib/prisma/queries/characters";
 
 /**
  * GET /api/auth/session
@@ -65,6 +66,9 @@ export async function GET(request: NextRequest) {
     // Atualizar TTL da sessão
     await refreshSession(sessionId);
 
+    // Buscar personagem principal do usuário
+    const mainCharacter = await getMainCharacter(session.userId);
+
     return NextResponse.json(
       {
         success: true,
@@ -73,6 +77,7 @@ export async function GET(request: NextRequest) {
           userId: session.userId,
           username: session.username,
           email: session.email,
+          characterName: mainCharacter?.character_name || null,
         },
       },
       { status: 200 }