feat: complete GSB construction ERP implementation with dual-mode MR, capitalization cap engine, single PM rule, and system sign-off documentation

Modules/ProjectManagement/app/Services/ProjectWorkflowService.php

@@ -55,13 +55,10 @@ class ProjectWorkflowService
      */
     public function canCreatePurchaseOrder(Project $project): bool
     {
-        // Requisition must exist and be approved
-        $hasApprovedMr = \Modules\MaterialLogistics\Models\MaterialRequisition::whereHas('items.material', function ($q) use ($project) {
-            // Check if the material is associated with this project's estimates
-            $q->whereIn('materials.id', $project->materialsEstimates()->pluck('material_id'));
-        })
-        ->where('status', 'approved')
-        ->exists();
+        // Requisition must exist and be approved for this project
+        $hasApprovedMr = \Modules\MaterialLogistics\Models\MaterialRequisition::where('project_id', $project->id)
+            ->where('status', 'approved')
+            ->exists();
 
         return $hasApprovedMr || $project->status === ProjectStatus::InProgress;
     }