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/services/dzikir_service.dart

@@ -0,0 +1,107 @@
+import 'dart:convert';
+import 'package:flutter/services.dart';
+import 'package:hive_flutter/hive_flutter.dart';
+import '../local/hive_boxes.dart';
+import '../local/models/dzikir_counter.dart';
+import 'package:intl/intl.dart';
+
+/// Represents a single dzikir item from the bundled JSON.
+class DzikirItem {
+  final String id;
+  final String arabic;
+  final String transliteration;
+  final String translation;
+  final int targetCount;
+  final String? source;
+
+  DzikirItem({
+    required this.id,
+    required this.arabic,
+    required this.transliteration,
+    required this.translation,
+    required this.targetCount,
+    this.source,
+  });
+
+  factory DzikirItem.fromJson(Map<String, dynamic> json) {
+    return DzikirItem(
+      id: json['id'] as String,
+      arabic: json['arabic'] as String? ?? '',
+      transliteration: json['transliteration'] as String? ?? '',
+      translation: json['translation'] as String? ?? '',
+      targetCount: json['target_count'] as int? ?? 1,
+      source: json['source'] as String?,
+    );
+  }
+}
+
+/// Types of dzikir sessions.
+enum DzikirType { pagi, petang }
+
+/// Service to load dzikir data and manage counters.
+class DzikirService {
+  DzikirService._();
+  static final DzikirService instance = DzikirService._();
+
+  final Map<DzikirType, List<DzikirItem>> _cache = {};
+
+  /// Load dzikir items from bundled JSON.
+  Future<List<DzikirItem>> getDzikir(DzikirType type) async {
+    if (_cache.containsKey(type)) return _cache[type]!;
+
+    final path = type == DzikirType.pagi
+        ? 'assets/dzikir/dzikir_pagi.json'
+        : 'assets/dzikir/dzikir_petang.json';
+
+    try {
+      final jsonString = await rootBundle.loadString(path);
+      final List<dynamic> data = json.decode(jsonString);
+      _cache[type] =
+          data.map((d) => DzikirItem.fromJson(d as Map<String, dynamic>)).toList();
+    } catch (_) {
+      _cache[type] = [];
+    }
+
+    return _cache[type]!;
+  }
+
+  /// Get counters for a specific date from Hive.
+  Map<String, int> getCountersForDate(String date) {
+    final box = Hive.box<DzikirCounter>(HiveBoxes.dzikirCounters);
+    final result = <String, int>{};
+
+    for (final key in box.keys) {
+      final counter = box.get(key);
+      if (counter != null && counter.date == date) {
+        result[counter.dzikirId] = counter.count;
+      }
+    }
+
+    return result;
+  }
+
+  /// Increment a dzikir counter for a specific ID on a specific date.
+  Future<void> increment(String dzikirId, String date, int target) async {
+    final box = Hive.box<DzikirCounter>(HiveBoxes.dzikirCounters);
+    final key = '${dzikirId}_$date';
+
+    final existing = box.get(key);
+    if (existing != null) {
+      existing.count = (existing.count + 1).clamp(0, target);
+      await existing.save();
+    } else {
+      await box.put(
+        key,
+        DzikirCounter(
+          dzikirId: dzikirId,
+          date: date,
+          count: 1,
+          target: target,
+        ),
+      );
+    }
+  }
+
+  /// Get today's date string.
+  String get todayKey => DateFormat('yyyy-MM-dd').format(DateTime.now());
+}