add support for badges and notifications, adjust nav pages

lib/objects/objects.dart

@@ -750,3 +750,80 @@ class EventField {
     );
   }
 }
+
+class UserNotification {
+  final int id;
+  final String title;
+  final String body;
+  final DateTime? createdAt;
+  final bool dismissed;
+
+  UserNotification({
+    required this.id,
+    required this.title,
+    required this.body,
+    required this.createdAt,
+    required this.dismissed,
+  });
+
+  factory UserNotification.fromJson(Map<String, dynamic> json) {
+    final created = json['created_at'] ?? json['createdAt'];
+    DateTime? createdAt;
+    if (created is String) {
+      createdAt = DateTime.tryParse(created);
+    } else if (created is DateTime) {
+      createdAt = created;
+    }
+    return UserNotification(
+      id: _asInt(json['notification_id'] ?? json['id']),
+      title: _asString(json['title']),
+      body: _asString(json['body']),
+      createdAt: createdAt,
+      dismissed: _asBool(json['dismissed'] ?? false, false),
+    );
+  }
+}
+
+class BadgeAward {
+  final int id;
+  final int badgeId;
+  final String badgeCode;
+  final String badgeTier;
+  final String? scopeValue;
+  final DateTime? awardedAt;
+  final LocoSummary? loco;
+
+  BadgeAward({
+    required this.id,
+    required this.badgeId,
+    required this.badgeCode,
+    required this.badgeTier,
+    this.scopeValue,
+    this.awardedAt,
+    this.loco,
+  });
+
+  factory BadgeAward.fromJson(Map<String, dynamic> json) {
+    final awarded = json['awarded_at'] ?? json['awardedAt'];
+    DateTime? awardedAt;
+    if (awarded is String) {
+      awardedAt = DateTime.tryParse(awarded);
+    } else if (awarded is DateTime) {
+      awardedAt = awarded;
+    }
+    final locoJson = json['loco'];
+    LocoSummary? loco;
+    if (locoJson is Map<String, dynamic>) {
+      loco = LocoSummary.fromJson(Map<String, dynamic>.from(locoJson));
+    }
+    return BadgeAward(
+      id: _asInt(json['award_id'] ?? json['id']),
+      badgeId: _asInt(json['badge_id'] ?? 0),
+      badgeCode: _asString(json['badge_code']),
+      badgeTier: _asString(json['badge_tier']),
+      scopeValue: _asString(json['scope_value']),
+      awardedAt: awardedAt,
+      loco: loco,
+    );
+  }
+}