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.

lib/hooks/use-session-query.ts

@@ -6,6 +6,7 @@ export interface SessionUser {
   userId: number;
   username: string;
   email: string;
+  characterName: string | null;
 }
 
 interface SessionResponse {