feat: Implement husband features and fix iOS Safari web startup

Implement initial features for husband's companion app, including mock data
service and husband notes screen. Refactor scripture and cycle services
for improved stability and testability. Address iOS Safari web app
startup issue by removing deprecated initialization.

- Implemented MockDataService and HusbandNotesScreen.
- Converted _DashboardTab and DevotionalScreen to StatefulWidgets for robust
  scripture provider initialization.
- Refactored CycleService to use immutable CycleInfo class, reducing UI rebuilds.
- Removed deprecated window.flutterConfiguration from index.html, resolving
  Flutter web app startup failure on iOS Safari.
- Updated and fixed related tests.

lib/services/cycle_service.dart

@@ -1,16 +1,47 @@
 import '../models/user_profile.dart';
 import '../models/cycle_entry.dart';
 
+class CycleInfo {
+  final CyclePhase phase;
+  final int dayOfCycle;
+  final int daysUntilPeriod;
+  final bool isPeriodExpected;
+
+  CycleInfo({
+    required this.phase,
+    required this.dayOfCycle,
+    required this.daysUntilPeriod,
+    required this.isPeriodExpected,
+  });
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is CycleInfo &&
+          runtimeType == other.runtimeType &&
+          phase == other.phase &&
+          dayOfCycle == other.dayOfCycle &&
+          daysUntilPeriod == other.daysUntilPeriod &&
+          isPeriodExpected == other.isPeriodExpected;
+
+  @override
+  int get hashCode =>
+      phase.hashCode ^
+      dayOfCycle.hashCode ^
+      daysUntilPeriod.hashCode ^
+      isPeriodExpected.hashCode;
+}
+
 class CycleService {
   /// Calculates the current cycle information based on user profile
-  static Map<String, dynamic> calculateCycleInfo(UserProfile? user) {
+  static CycleInfo calculateCycleInfo(UserProfile? user) {
     if (user?.lastPeriodStartDate == null) {
-      return {
-        'phase': CyclePhase.follicular,
-        'dayOfCycle': 1,
-        'daysUntilPeriod': user?.averageCycleLength ?? 28,
-        'isPeriodExpected': false,
-      };
+      return CycleInfo(
+        phase: CyclePhase.follicular,
+        dayOfCycle: 1,
+        daysUntilPeriod: user?.averageCycleLength ?? 28,
+        isPeriodExpected: false,
+      );
     }
 
     final lastPeriod = user!.lastPeriodStartDate!;
@@ -38,12 +69,12 @@ class CycleService {
       phase = CyclePhase.luteal;
     }
 
-    return {
-      'phase': phase,
-      'dayOfCycle': dayOfCycle,
-      'daysUntilPeriod': daysUntilPeriod,
-      'isPeriodExpected': daysUntilPeriod <= 0 || dayOfCycle <= 5,
-    };
+    return CycleInfo(
+      phase: phase,
+      dayOfCycle: dayOfCycle,
+      daysUntilPeriod: daysUntilPeriod,
+      isPeriodExpected: daysUntilPeriod <= 0 || dayOfCycle <= 5,
+    );
   }
 
   /// Format cycle day for display