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/SchoolYearManagementService.php

@@ -379,27 +379,20 @@ final class SchoolYearManagementService
             'school_year' => $name,
             'date_age_reference' => $ageReferenceDate,
             'refund_deadline' => $ageReferenceDate,
-            'year_start_date' => $yearStart,
-            'year_end_date' => $yearEnd,
             'school_year_start_date' => $yearStart,
             'school_year_end_date' => $yearEnd,
-            'registration_day' => $registrationDay,
             'registration_starts_on' => $registrationDay,
-            'end_of_registration' => $enrollmentDeadline,
             'enrollment_deadline' => $enrollmentDeadline,
-            '1st_day_of_school' => $firstDay,
             'first_day_of_school' => $firstDay,
             'Installment_date' => $installment,
             'installment_date' => $installment,
-            'fall_semester_start' => $firstDay,
+            'fall_semester_start' => $yearStart,
             'school_start_date' => $firstDay,
             'Due_date' => $firstDay,
             'due_date' => $firstDay,
             'last_day_of_school' => $lastDay,
-            'last_school_day' => $lastDay,
             'Final_Exam_day' => $finalExam,
             'final_exam_day' => $finalExam,
-            'Make_up_exam' => $makeupExam,
             'make_up_exam' => $makeupExam,
             'makeup_exam_day' => $makeupExam,
             'Orientation_day' => $orientation,
@@ -448,10 +441,8 @@ final class SchoolYearManagementService
             'fall_makeup_exam_on' => $firstDay->modify('-1 week')->format('Y-m-d'),
             'orientation_day' => $firstDay->modify('-2 weeks')->format('Y-m-d'),
             'first_day_of_school' => $firstDay->format('Y-m-d'),
-            '1st_day_of_school' => $firstDay->format('Y-m-d'),
             'installment_date' => sprintf('%04d-03-01', $endYear),
             'last_day_of_school' => $finalExam->modify('+2 weeks')->format('Y-m-d'),
-            'last_school_day' => $finalExam->modify('+2 weeks')->format('Y-m-d'),
             'final_exam_day' => $finalExam->format('Y-m-d'),
             'midterm_exam_day' => $midterm->format('Y-m-d'),
             'spring_semester_start' => $midterm->modify('+1 week')->format('Y-m-d'),