fix(form-builder): FormFailureRetryService writes failure_response_code + apply_completed_at on retry failure

Per ARCH-BINDINGS §7.1 v1.2 retry-service asymmetry note + RFC-WS-6 §Q3 v1.3 addition 2.

recordFailure() now mirrors ApplyBindingsOnFormSubmit's outer-transaction
failure path:

1. failure_response_code via FormBindingExceptionClassifier::classify($e).
   Same classification logic as the listener — single behaviour-change
   point per the v1.3-delta D1 design.
2. apply_completed_at = now() — closes the asymmetry where the listener
   wrote this column on both happy and failure paths but the retry
   service only wrote it on the success path.

recordSuccess() unchanged — already writes apply_completed_at via the
shared transaction block in retry().

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

api/app/Services/FormBuilder/FormFailureRetryService.php

@@ -8,6 +8,7 @@ use App\Enums\FormBuilder\ApplyStatus;
 use App\Exceptions\FormBuilder\FailureNotRetriableException;
 use App\Exceptions\FormBuilder\ParentSubmissionGoneException;
 use App\FormBuilder\Bindings\FormBindingApplicator;
+use App\FormBuilder\Bindings\FormBindingExceptionClassifier;
 use App\Models\FormBuilder\FormSubmission;
 use App\Models\FormBuilder\FormSubmissionActionFailure;
 use App\Models\FormBuilder\FormSubmissionActionFailureRetryAttempt;
@@ -30,6 +31,13 @@ use Throwable;
  *      exception details, increment retry_count. Parent's own
  *      exception_class / exception_message stay audit-immutable —
  *      they represent the FIRST failure.
+ *
+ * v1.3-delta D2 (per ARCH-BINDINGS §7.1 v1.2 + RFC-WS-6 §Q3 v1.3 addition 2):
+ *   - recordFailure now mirrors ApplyBindingsOnFormSubmit's outer-txn path:
+ *     writes failure_response_code via FormBindingExceptionClassifier and
+ *     apply_completed_at = now() (closes the asymmetry where the listener
+ *     wrote this column on both happy and failure paths but the retry
+ *     service only wrote it on the success path).
  */
 final readonly class FormFailureRetryService
 {
@@ -125,9 +133,18 @@ final readonly class FormFailureRetryService
                 ->whereKey($failure->id)
                 ->update(['retry_count' => DB::raw('retry_count + 1')]);
 
+            // Per ARCH-BINDINGS §7.1 v1.2 retry-service asymmetry note +
+            // RFC-WS-6 §Q3 v1.3 addition 2 — mirror ApplyBindingsOnFormSubmit's
+            // outer-transaction failure path: same failure_response_code
+            // classifier + apply_completed_at write. Single behaviour-change
+            // point per the v1.3-delta D1 design.
             FormSubmission::query()
                 ->whereKey($submission->id)
-                ->update(['apply_status' => ApplyStatus::FAILED->value]);
+                ->update([
+                    'apply_status' => ApplyStatus::FAILED->value,
+                    'apply_completed_at' => now(),
+                    'failure_response_code' => FormBindingExceptionClassifier::classify($e),
+                ]);
 
             return $attempt;
         });