fix: complete InvesteMoz validation and error corrections

app/Services/SimulationFiscalQaPreview.php

@@ -7,11 +7,16 @@ namespace App\Services;
 use App\Models\InvestmentLegalSource;
 use App\Models\User;
 use App\Support\IsolatedQaDatabase;
+use App\Support\StructuredData;
 use Illuminate\Support\Facades\DB;
 
 /** Exact operation-level IVA calculation against an explicit QA draft; never a payment/return total. */
 final class SimulationFiscalQaPreview
 {
+    /**
+     * @param  array<array-key, mixed>  $input
+     * @return array<array-key, mixed>
+     */
     public function create(User $actor, string $ruleId, array $input, string $key): array
     {
         abort_unless(IsolatedQaDatabase::allowsSchemaChanges(), 404);
@@ -20,7 +25,7 @@ final class SimulationFiscalQaPreview
             $rule = app(SimulationTaxRuleGovernance::class)->show($actor, $ruleId);
             abort_unless($rule->status === 'draft' && $rule->rule_code === 'IVA-GERAL-BASE-LIQUIDA', 422,
                 'Seleccione o rascunho do primeiro lote fiscal.');
-            abort_if(collect($rule->rule_definition['nodes'] ?? [])->contains(fn (array $node): bool => ($node['op'] ?? null) === 'round'), 422,
+            abort_if(collect(StructuredData::collectionItems($rule->rule_definition['nodes'] ?? []))->contains(fn (array $node): bool => ($node['op'] ?? null) === 'round'), 422,
                 'Este percurso preserva o valor exacto e não aplica arredondamento automático.');
             $source = InvestmentLegalSource::findOrFail($rule->legal_source_id);
             $version = $rule->attributesToArray();