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/core/widgets/prayer_time_card.dart

@@ -0,0 +1,68 @@
+import 'package:flutter/material.dart';
+import '../../app/theme/app_colors.dart';
+
+/// Reusable prayer time card widget for the horizontal scroll on Dashboard.
+/// Will be fully implemented in Phase 3.
+class PrayerTimeCard extends StatelessWidget {
+  const PrayerTimeCard({
+    super.key,
+    required this.prayerName,
+    required this.time,
+    required this.icon,
+    this.isActive = false,
+  });
+
+  final String prayerName;
+  final String time;
+  final IconData icon;
+  final bool isActive;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+
+    return Container(
+      width: 112,
+      padding: const EdgeInsets.symmetric(vertical: 16, horizontal: 12),
+      decoration: BoxDecoration(
+        color: isActive
+            ? AppColors.primary.withValues(alpha: 0.1)
+            : theme.cardTheme.color,
+        borderRadius: BorderRadius.circular(16),
+        border: Border.all(
+          color: isActive
+              ? AppColors.primary
+              : AppColors.primary.withValues(alpha: 0.1),
+          width: isActive ? 2 : 1,
+        ),
+      ),
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Icon(
+            icon,
+            size: 24,
+            color: isActive ? AppColors.primary : AppColors.sage,
+          ),
+          const SizedBox(height: 8),
+          Text(
+            prayerName,
+            style: theme.textTheme.bodySmall?.copyWith(
+              fontWeight: FontWeight.bold,
+              color: isActive ? AppColors.primary : null,
+            ),
+          ),
+          const SizedBox(height: 4),
+          Text(
+            time,
+            style: theme.textTheme.bodySmall?.copyWith(
+              color: isActive
+                  ? AppColors.primary
+                  : theme.textTheme.bodySmall?.color,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}