feat: Add auto-sync, fix partner linking UI, update sharing settings

- Add 10-second periodic auto-sync to CycleEntriesNotifier
- Fix husband_devotional_screen: use partnerId for isConnected check, navigate to SharingSettingsScreen instead of legacy mock dialog
- Remove obsolete _showConnectDialog method and mock data import
- Update husband_settings_screen: show 'Partner Settings' with linked partner name when connected
- Add SharingSettingsScreen: Pad Supplies toggle (disabled when pad tracking off), Intimacy always enabled
- Add CORS OPTIONS handler to backend server
- Add _ensureServerRegistration for reliable partner linking
- Add copy button to Invite Partner dialog
- Dynamic base URL for web (uses window.location.hostname)

lib/models/prayer_request.g.dart

@@ -0,0 +1,53 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'prayer_request.dart';
+
+// **************************************************************************
+// TypeAdapterGenerator
+// **************************************************************************
+
+class PrayerRequestAdapter extends TypeAdapter<PrayerRequest> {
+  @override
+  final int typeId = 15;
+
+  @override
+  PrayerRequest read(BinaryReader reader) {
+    final numOfFields = reader.readByte();
+    final fields = <int, dynamic>{
+      for (int i = 0; i < numOfFields; i++) reader.readByte(): reader.read(),
+    };
+    return PrayerRequest(
+      id: fields[0] as String,
+      request: fields[1] as String,
+      isAnswered: fields[2] as bool,
+      createdAt: fields[3] as DateTime,
+      updatedAt: fields[4] as DateTime,
+    );
+  }
+
+  @override
+  void write(BinaryWriter writer, PrayerRequest obj) {
+    writer
+      ..writeByte(5)
+      ..writeByte(0)
+      ..write(obj.id)
+      ..writeByte(1)
+      ..write(obj.request)
+      ..writeByte(2)
+      ..write(obj.isAnswered)
+      ..writeByte(3)
+      ..write(obj.createdAt)
+      ..writeByte(4)
+      ..write(obj.updatedAt);
+  }
+
+  @override
+  int get hashCode => typeId.hashCode;
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is PrayerRequestAdapter &&
+          runtimeType == other.runtimeType &&
+          typeId == other.typeId;
+}