Add player onboarding and tactical viewer updates

apps/viewer/src/contractsAuth.ts

@@ -8,6 +8,12 @@ export interface AuthSessionResponse {
   refreshTokenExpiresAtUtc: string;
 }
 
+export interface RegisterResponse {
+  userId: string;
+  email: string;
+  requiresLogin: boolean;
+}
+
 export interface ForgotPasswordResponse {
   accepted: boolean;
   resetToken?: string | null;