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

app/Services/FinancialAidService.php

@@ -147,7 +147,6 @@ final class FinancialAidService
         $classSectionModel = $this->classSectionModel ?? new ClassSectionModel();
         $eventChargesModel = $this->eventChargesModel ?? new EventChargesModel();
         $configurationModel = $this->configurationModel ?? new ConfigurationModel();
-        $userModel = $this->userModel ?? new UserModel();
         $invoiceIssuanceService = $this->invoiceIssuanceService ?? new InvoiceIssuanceService(
             $this->requestModel->db,
             $this->invoiceModel,
@@ -155,7 +154,7 @@ final class FinancialAidService
             $this->invoiceLedgerService
         );
 
-        $semester = (string) ($configurationModel->getConfig('semester') ?: '');
+        $semester = (string) (getSemester() ?: '');
         $enrollments = $enrollmentModel
             ->where('parent_id', $parentId)
             ->where('school_year', $schoolYear)
@@ -199,16 +198,12 @@ final class FinancialAidService
             throw new RuntimeException('Invoice could not be created because this parent has no billable tuition or event charges.');
         }
 
-        $schoolId = $userModel->getSchoolIdByUserId($parentId);
-        $invoiceNumber = !empty($schoolId)
-            ? 'INV-' . $schoolId . '-' . uniqid()
-            : uniqid('INV-');
         $issueUtc = (new DateTime('now', new DateTimeZone('UTC')))->format('Y-m-d H:i:s');
         $dueUtc = $this->invoiceDueUtc($configurationModel);
 
         $result = $invoiceIssuanceService->issueInvoice(new IssueInvoiceCommand([
             'parent_id' => $parentId,
-            'invoice_number' => $invoiceNumber,
+            'invoice_number' => $invoiceIssuanceService->generateInvoiceNumber($schoolYear, $parentId),
             'total_amount' => $totalAmount,
             'paid_amount' => 0,
             'balance' => $totalAmount,