Initial commit with .gitignore

database/fix_alfa_rollback.sql

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+-- =====================================================
+-- FIX ALFA ROLLBACK SCRIPT
+-- Tanggal: 2026-01-12
+-- Tujuan: Menghapus record ALFA yang salah terekap
+-- =====================================================
+-- 
+-- INSTRUKSI:
+-- 1. Jalankan STEP 1 dulu untuk melihat data yang akan dihapus
+-- 2. Verifikasi outputnya benar (hanya record bukan XII-B)
+-- 3. Jalankan STEP 2 untuk menghapus data
+-- 4. Jalankan STEP 3 untuk verifikasi hasil
+-- =====================================================
+
+-- =====================================================
+-- STEP 1: PREVIEW - Lihat data yang akan dihapus
+-- Jalankan query ini PERTAMA untuk memastikan data benar
+-- =====================================================
+SELECT 
+    class_name AS 'Kelas',
+    COUNT(*) AS 'Jumlah Siswa'
+FROM attendance 
+WHERE date_str = '2026-01-12' 
+  AND status = 'ALFA' 
+  AND ai_verification = 'Otomatis dari Sistem'
+  AND class_name != 'XII-B'
+GROUP BY class_name
+ORDER BY class_name;
+
+-- =====================================================
+-- STEP 2: HAPUS DATA - Jalankan setelah preview benar
+-- =====================================================
+DELETE FROM attendance 
+WHERE date_str = '2026-01-12' 
+  AND status = 'ALFA' 
+  AND ai_verification = 'Otomatis dari Sistem'
+  AND class_name != 'XII-B';
+
+-- =====================================================
+-- STEP 3: VERIFIKASI - Pastikan hanya XII-B tersisa
+-- =====================================================
+SELECT 
+    class_name AS 'Kelas',
+    COUNT(*) AS 'Jumlah ALFA Tersisa'
+FROM attendance 
+WHERE date_str = '2026-01-12' 
+  AND status = 'ALFA'
+GROUP BY class_name
+ORDER BY class_name;