Fix semester context, attendance rosters, and billing workflows

- load global semester helpers consistently and use date-based semester defaults
- fix grading and daily attendance duplicate student/section rows
- keep attendance violations scoped to the current semester by default
- update invoice, refund, discount, payment, and financial aid flows
- add configuration cleanup migrations for duplicate calendar/semester keys
- refresh parent registration/report-card and print request handling
- update related models, services, views, cron notes, and test coverage

tests/app/Controllers/Administrator/FinancialAidControllerTest.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace Tests\App\Controllers\Administrator;
+
+use App\Controllers\Administrator\FinancialAidController;
+use CodeIgniter\Test\CIUnitTestCase;
+
+class FinancialAidRequestStub
+{
+    public function __construct(private array $post = [])
+    {
+    }
+
+    public function getPost(?string $key = null)
+    {
+        if ($key === null) {
+            return $this->post;
+        }
+
+        return $this->post[$key] ?? null;
+    }
+}
+
+class TestableFinancialAidController extends FinancialAidController
+{
+    public function __construct()
+    {
+    }
+
+    public function setRequestObject($request): self
+    {
+        $this->request = $request;
+        return $this;
+    }
+}
+
+class FinancialAidControllerTest extends CIUnitTestCase
+{
+    public function testPostedAdminAmountWinsOverRequestedAmount(): void
+    {
+        $controller = (new TestableFinancialAidController())
+            ->setRequestObject(new FinancialAidRequestStub(['admin_amount' => '175.50']));
+
+        $this->assertSame(175.50, $this->approvalAmount($controller, [
+            'requested_amount' => '250.00',
+        ]));
+    }
+
+    public function testBlankAdminAmountFallsBackToRequestedAmount(): void
+    {
+        $controller = (new TestableFinancialAidController())
+            ->setRequestObject(new FinancialAidRequestStub(['admin_amount' => '']));
+
+        $this->assertSame(250.00, $this->approvalAmount($controller, [
+            'requested_amount' => '250.00',
+        ]));
+    }
+
+    private function approvalAmount(FinancialAidController $controller, array $request): float
+    {
+        $reflection = new \ReflectionMethod($controller, 'approvalAmount');
+        $reflection->setAccessible(true);
+
+        return $reflection->invoke($controller, $request);
+    }
+}