Initial commit: Aplikasi Ketertiban Siswa

- Fitur: input pelanggaran, sistem poin, surat peringatan otomatis, SP progress
- Realtime notifikasi via Laravel Reverb + Echo
- Dashboard statistik, manajemen user, manajemen master data
- Login 2 kolom premium, user dropdown, pengaturan akun
- Tema biru kalem, logo sekolah dinamis, sidebar brand dinamis
- Sinkronisasi siswa dari Database Kesiswaan via API

app/Models/Student.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class Student extends Model
+{
+    protected $fillable = [
+        'source_id', 'nisn', 'student_number', 'full_name',
+        'gender', 'place_of_birth', 'date_of_birth', 'address',
+        'phone_number', 'email', 'class_name', 'class_level',
+        'department_code', 'department_name', 'academic_year_name',
+        'status', 'photo_path', 'class_id', 'is_active',
+        'metadata', 'synced_at',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'date_of_birth' => 'date',
+            'is_active' => 'boolean',
+            'metadata' => 'json',
+            'synced_at' => 'datetime',
+        ];
+    }
+
+    public function violations(): HasMany
+    {
+        return $this->hasMany(Violation::class);
+    }
+
+    public function spLetters(): HasMany
+    {
+        return $this->hasMany(SpLetter::class);
+    }
+
+    public function class()
+    {
+        return $this->belongsTo(Classes::class, 'class_id');
+    }
+
+    public function getTotalPointsAttribute(): int
+    {
+        return $this->violations()
+            ->whereNull('deleted_at')
+            ->sum('points');
+    }
+}