feat: Murattal player enhancements & prayer schedule auto-scroll

- Murattal: Spotify-style 5-button controls [Shuffle, Prev, Play, Next, Playlist]
- Murattal: Animated 7-bar equalizer visualization in player circle
- Murattal: Unsplash API background with frosted glass player overlay
- Murattal: Transparent AppBar with backdrop blur
- Murattal: Surah playlist bottom sheet with full 114 Surah list
- Murattal: Auto-play disabled on screen open, enabled on navigation
- Murattal: Shuffle mode for random Surah playback
- Murattal: Photographer attribution per Unsplash guidelines
- Dashboard: Auto-scroll prayer schedule to next active prayer
- Fix: setState lifecycle errors on Reading & Murattal screens
- Setup: flutter_dotenv, cached_network_image, url_launcher deps

lib/data/local/models/app_settings.dart

@@ -0,0 +1,101 @@
+import 'package:hive_flutter/hive_flutter.dart';
+
+part 'app_settings.g.dart';
+
+/// User settings stored in Hive.
+@HiveType(typeId: 0)
+class AppSettings extends HiveObject {
+  @HiveField(0)
+  String userName;
+
+  @HiveField(1)
+  String userEmail;
+
+  @HiveField(2)
+  int themeModeIndex; // 0=system, 1=light, 2=dark
+
+  @HiveField(3)
+  double arabicFontSize;
+
+  @HiveField(4)
+  String uiLanguage; // 'id' or 'en'
+
+  @HiveField(5)
+  Map<String, bool> adhanEnabled;
+
+  @HiveField(6)
+  Map<String, int> iqamahOffset; // minutes
+
+  @HiveField(7)
+  String? checklistReminderTime; // HH:mm format
+
+  @HiveField(8)
+  double? lastLat;
+
+  @HiveField(9)
+  double? lastLng;
+
+  @HiveField(10)
+  String? lastCityName;
+
+  @HiveField(11)
+  int rawatibLevel; // 0 = Off, 1 = Muakkad Only, 2 = Full
+
+  @HiveField(12)
+  int tilawahTargetValue;
+
+  @HiveField(13)
+  String tilawahTargetUnit; // 'Juz', 'Halaman', 'Ayat'
+
+  @HiveField(14)
+  bool tilawahAutoSync;
+
+  @HiveField(15)
+  bool trackDzikir;
+
+  @HiveField(16)
+  bool trackPuasa;
+
+  @HiveField(17)
+  bool showLatin;
+
+  @HiveField(18)
+  bool showTerjemahan;
+
+  AppSettings({
+    this.userName = 'User',
+    this.userEmail = '',
+    this.themeModeIndex = 0,
+    this.arabicFontSize = 24.0,
+    this.uiLanguage = 'id',
+    Map<String, bool>? adhanEnabled,
+    Map<String, int>? iqamahOffset,
+    this.checklistReminderTime = '09:00',
+    this.lastLat,
+    this.lastLng,
+    this.lastCityName,
+    this.rawatibLevel = 1, // Default to Muakkad
+    this.tilawahTargetValue = 1,
+    this.tilawahTargetUnit = 'Juz',
+    this.tilawahAutoSync = false,
+    this.trackDzikir = true,
+    this.trackPuasa = false,
+    this.showLatin = true,
+    this.showTerjemahan = true,
+  })  : adhanEnabled = adhanEnabled ??
+            {
+              'fajr': true,
+              'dhuhr': true,
+              'asr': true,
+              'maghrib': true,
+              'isha': true,
+            },
+        iqamahOffset = iqamahOffset ??
+            {
+              'fajr': 15,
+              'dhuhr': 10,
+              'asr': 10,
+              'maghrib': 5,
+              'isha': 10,
+            };
+}