succeed when testflight is only uploaded to internal testers

Author: tommasini

ios/fastlane/Fastfile

@@ -94,17 +94,23 @@ platform :ios do
     )
 
     # Upload to TestFlight with API key from app_store_connect_api_key action.
-    # Only include groups when distributing externally -- passing groups with
-    # distribute_external=false still triggers the groups API, which fails if
-    # the API key lacks external-distribution permissions.
+    # When distribute_external is false we skip_submission so the action only
+    # uploads the IPA binary. This avoids TestFlight management API calls that
+    # require an App Manager (or higher) role API key — a Developer role key
+    # can upload builds but cannot manage distribution.
     testflight_options = {
       api_key: api_key,
       ipa: ipa_path,
-      distribute_external: distribute_external,
-      notify_external_testers: notify_external_testers,
       changelog: changelog_message
     }
-    testflight_options[:groups] = groups if distribute_external
+
+    if distribute_external
+      testflight_options[:distribute_external] = true
+      testflight_options[:notify_external_testers] = true
+      testflight_options[:groups] = groups
+    else
+      testflight_options[:skip_submission] = true
+    end
 
     upload_to_testflight(testflight_options)
   end