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

composer.json

@@ -10,6 +10,7 @@
         "barryvdh/laravel-dompdf": "^3.1",
         "laravel/framework": "^13.8",
         "laravel/reverb": "^1.10",
+        "laravel/sanctum": "^4.3",
         "laravel/tinker": "^3.0",
         "phpoffice/phpspreadsheet": "^5.9"
     },