feat: API wali murid (Sanctum) + verifikasi admin

- Pasang laravel/sanctum, routes/api.php (prefix api/v1, 10 endpoint)
- Migrasi: parent_name di students, parent_students (pivot wali↔anak),
  parent_devices (token FCM), permission parents-verify
- Auth wali: registrasi NISN+HP (auto-verify jika HP cocok data siswa,
  pending jika tidak) + login token Sanctum
- Endpoint: me, logout, students, link anak, violations, sp-letters,
  notifications, register device
- Halaman admin Verifikasi Wali (approve/reject) + menu sidebar
- Sync kesiswaan: tarik data orang tua (student_parents) ke students
- 8 feature test baru (ParentApiTest) — total suite 39 test hijau

app/Models/Student.php

@@ -10,7 +10,7 @@ class Student extends Model
     protected $fillable = [
         'source_id', 'nisn', 'student_number', 'full_name',
         'gender', 'place_of_birth', 'date_of_birth', 'address',
-        'phone_number', 'parent_phone', 'email', 'class_name', 'class_level',
+        'phone_number', 'parent_phone', 'parent_name', 'email', 'class_name', 'class_level',
         'department_code', 'department_name', 'academic_year_name',
         'status', 'photo_path', 'class_id', 'is_active',
         'metadata', 'synced_at',
@@ -41,6 +41,11 @@ class Student extends Model
         return $this->belongsTo(Classes::class, 'class_id');
     }
 
+    public function parentLinks()
+    {
+        return $this->hasMany(\App\Models\ParentStudent::class, 'student_id');
+    }
+
     public function getTotalPointsAttribute(): int
     {
         return $this->violations()