fix(mobile): address Apple review onboarding flows

apps/mobile/src/lib/appleProfileName.ts

@@ -0,0 +1,24 @@
+export interface AppleProfileName {
+    givenName?: string | null;
+    middleName?: string | null;
+    familyName?: string | null;
+}
+
+const MAX_PROFILE_NAME_LENGTH = 100;
+
+/**
+ * Apple supplies its name fields only on the first authorization. Keep that
+ * user-provided value as the Sauci display name without retaining email or
+ * other Apple credential fields outside the existing profile contract.
+ */
+export function formatAppleProfileName(fullName: AppleProfileName | null | undefined): string | null {
+    const name = [fullName?.givenName, fullName?.middleName, fullName?.familyName]
+        .filter((part): part is string => typeof part === "string")
+        .join(" ")
+        .normalize("NFKC")
+        .replace(/[\u0000-\u001F\u007F-\u009F]/g, "")
+        .replace(/\s+/gu, " ")
+        .trim();
+
+    return name.length > 0 ? name.slice(0, MAX_PROFILE_NAME_LENGTH) : null;
+}