fix: make personal data editable in bookings as permitted by bpn

src/Form/Service/EditFieldStateProvider.php

@@ -65,23 +65,20 @@ class EditFieldStateProvider extends AbstractFieldStateProvider
             $personalDataMutabilityCondition
         );
 
-        // Render all personal data fields as static text if first participant in non-internal agency OR BPN indicates not mutable
-        // Using 'static_text' state (not 'hidden') so template renders values as static text
-        $personalDataFields = [
-            'firstName',
-            'lastName',
-            'dateOfBirth',
-            'gender',
-            'nationality',
-            'email',
-            'mobile',
-        ];
-        foreach ($personalDataFields as $field) {
+        // Core identity fields: static text if first participant in non-internal agency OR BPN indicates not mutable
+        foreach (['firstName', 'lastName', 'dateOfBirth', 'gender', 'nationality'] as $field) {
             $this->fieldStateConditions[$field] = [
                 'static_text' => $personalDataHiddenCondition,
             ];
         }
 
+        // Contact fields: only the applicant (index 0) is read-only — participants can always update email/phone
+        foreach (['email', 'mobile'] as $field) {
+            $this->fieldStateConditions[$field] = [
+                'static_text' => $firstParticipantReadOnlyCondition,
+            ];
+        }
+
         // Address fields - render as static text if first participant in non-internal agency OR participant not mutable
         $this->fieldStateConditions['address'] = [
             'static_text' => $personalDataHiddenCondition,