feat: centralize application framework primitives

packages/auth/src/validation.ts

@@ -160,11 +160,7 @@ export const mfaOtpRequestSchema = v.object({
 });
 
 export const mfaSchema = v.object({
-  mfaToken: v
-    .string()
-    .required("MFA transaction is missing")
-    .min(20, "MFA transaction is invalid")
-    .max(512),
+  mfaToken: v.string().min(20, "MFA transaction is invalid").max(512).optional(),
   method: v
     .string()
     .required("Choose a verification method")