Fixed Lock for Field expert + user view of files

src/helpers/iran-mobile.ts

@@ -44,3 +44,28 @@ export function buildUserLookupByPhone(
     $or: variants.flatMap((v) => [{ username: v }, { mobile: v }]),
   };
 }
+
+/** True when a blame party person row belongs to the authenticated user. */
+export function partyPersonMatchesUser(
+  person:
+    | { userId?: unknown; phoneNumber?: string }
+    | null
+    | undefined,
+  user: { sub?: string; username?: string } | null | undefined,
+): boolean {
+  if (!person || !user) return false;
+  if (
+    person.userId != null &&
+    user.sub &&
+    String(person.userId) === String(user.sub)
+  ) {
+    return true;
+  }
+  if (!person.phoneNumber || !user.username) return false;
+  const stored =
+    normalizeIranMobile(person.phoneNumber) ?? person.phoneNumber;
+  const variants = iranMobileLookupVariants(user.username);
+  return variants.some(
+    (v) => v === stored || v === person.phoneNumber,
+  );
+}