fix teacher pages and adopt the school year

app/Controllers/View/InventoryController.php

@@ -3,6 +3,7 @@
 namespace App\Controllers\View;
 
 use App\Controllers\BaseController;
+use App\Exceptions\SchoolYear\SchoolYearWriteConflictException;
 use App\Models\ClassSectionModel;
 use App\Models\InventoryItemModel;
 use App\Models\InventoryCategoryModel;
@@ -713,6 +714,8 @@ class InventoryController extends BaseController
      */
     public function teacherDistributeForm()
     {
+        $schoolYearContext = $this->resolveSchoolYearContext();
+
         // 1) Build teacher/class context (auth/role/no-class handled inside)
         $ctx = $this->buildTeacherClassContext();
         if ($ctx instanceof \CodeIgniter\HTTP\RedirectResponse) {
@@ -858,11 +861,19 @@ class InventoryController extends BaseController
 
             'schoolYear'       => $ctx['schoolYear'],
             'semester'         => $ctx['semester'],
+            'isEditable'       => ! $schoolYearContext->isReadonly(),
         ]);
     }
 
     public function teacherDistributeStore()
     {
+        $schoolYearContext = $this->resolveSchoolYearContext();
+        try {
+            $this->assertSchoolYearWritable($schoolYearContext);
+        } catch (SchoolYearWriteConflictException $e) {
+            return redirect()->back()->withInput()->with('error', $e->getMessage());
+        }
+
         $ctx = $this->buildTeacherClassContext();
         if ($ctx instanceof \CodeIgniter\HTTP\RedirectResponse) {
             return $ctx;