feat: implement core ERP modules, multi-tenant architecture, and comprehensive system workflow documentation.

app/Http/Middleware/HandleInertiaRequests.php

@@ -8,6 +8,7 @@ use Modules\ApprovalWorkflow\Models\ApprovalChain;
 use Modules\ContractorManagement\Models\Contractor;
 use Modules\MaterialLogistics\Models\MaterialRequisition;
 use Modules\MaterialLogistics\Models\PurchaseOrder;
+use Modules\ProjectManagement\Models\Project;
 
 class HandleInertiaRequests extends Middleware
 {
@@ -44,12 +45,46 @@ class HandleInertiaRequests extends Middleware
                 'success' => $request->session()->get('success'),
                 'error' => $request->session()->get('error'),
             ],
-            'sidebarBadges' => fn () => $request->user() ? [
-                'pending_requisitions' => MaterialRequisition::where('status', 'draft')->count(),
-                'pending_purchase_orders' => PurchaseOrder::where('status', 'draft')->count(),
-                'pending_approvals' => ApprovalChain::where('status', 'pending')->count(),
-            ] : null,
+            'sidebarBadges' => fn () => $request->user() ? (function () use ($request) {
+                $user = $request->user();
+
+                // Drafts belong to their creator. Submitted requests are
+                // relevant only when the current user is an assigned approver.
+                $ownDraftRequisitions = MaterialRequisition::where('status', 'draft')
+                    ->where('requested_by', $user->id)
+                    ->count();
+
+                $assignedRequisitionApprovals = ApprovalChain::where('status', 'pending')
+                    ->where('type', 'material_requisition')
+                    ->whereHas('steps', function ($query) use ($user) {
+                        $query->where('approver_id', $user->id)
+                            ->where('status', 'pending');
+                    })
+                    ->count();
+
+                $ownDraftPurchaseOrders = PurchaseOrder::where('status', 'draft')
+                    ->where('requested_by', $user->id)
+                    ->count();
+
+                $assignedApprovals = ApprovalChain::where('status', 'pending')
+                    ->whereHas('steps', function ($query) use ($user) {
+                        $query->where('approver_id', $user->id)
+                            ->where('status', 'pending');
+                    })
+                    ->count();
+
+                return [
+                    'pending_requisitions' => $ownDraftRequisitions + $assignedRequisitionApprovals,
+                    'pending_purchase_orders' => $ownDraftPurchaseOrders,
+                    'pending_approvals' => $assignedApprovals,
+                ];
+            })() : null,
+            'projectOptions' => fn () => $request->user()
+                ? Project::where('current_wizard_step', '>=', 7)
+                    ->whereHas('bidPackages')
+                    ->with('parentProject:id,ulid,name,code')
+                    ->get(['id', 'ulid', 'name', 'code', 'project_type', 'parent_project_id', 'status'])
+                : [],
         ];
     }
 }
-