diff --git a/build.yaml b/build.yaml
index dcc8576..4205425 100644
--- a/build.yaml
+++ b/build.yaml
@@ -4,4 +4,5 @@ targets:
       json_serializable:
         options:
           explicit_to_json: false
+          checked: true
           generic_argument_factories: true
\ No newline at end of file
diff --git a/lib/api/api_response.dart b/lib/api/api_response.dart
index cef5697..17470f8 100644
--- a/lib/api/api_response.dart
+++ b/lib/api/api_response.dart
@@ -7,4 +7,9 @@ abstract class ApiResponse {
 
   @JsonKey(includeIfNull: false)
   Map<String, String>? headers;
+
+  /// Entries the decoder skipped (see `decodeListLenient`), reported by the
+  /// API layer once the response is back on the main isolate.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  List<String> parseWarnings = const [];
 }
diff --git a/lib/api/json_lenient.dart b/lib/api/json_lenient.dart
new file mode 100644
index 0000000..b291d2f
--- /dev/null
+++ b/lib/api/json_lenient.dart
@@ -0,0 +1,46 @@
+import 'package:json_annotation/json_annotation.dart';
+
+/// Decodes server lists element by element so one entry the model cannot map
+/// (a field the server dropped, an enum value it added) is skipped and
+/// recorded instead of failing the whole response and with it the screen.
+///
+/// Skipped entries are collected per isolate; the API layer drains them with
+/// [drainDecodeWarnings] and reports them, so a drift in the server's format
+/// still reaches us without taking the feature down for the user.
+final List<String> _warnings = [];
+
+List<T> decodeListLenient<T>(
+  Object? raw,
+  T Function(Map<String, dynamic>) fromJson, {
+  required String what,
+}) {
+  final items = <T>[];
+  if (raw is! List<dynamic>) {
+    throw FormatException(
+      'expected a list of ${what}s, got ${raw.runtimeType}',
+    );
+  }
+  for (final entry in raw) {
+    try {
+      items.add(fromJson(entry as Map<String, dynamic>));
+    } on CheckedFromJsonException catch (e) {
+      _warnings.add('$what: $e');
+    } on TypeError catch (e) {
+      _warnings.add('$what: $e');
+    }
+  }
+  return items;
+}
+
+Set<T> decodeSetLenient<T>(
+  Object? raw,
+  T Function(Map<String, dynamic>) fromJson, {
+  required String what,
+}) => decodeListLenient(raw, fromJson, what: what).toSet();
+
+/// Returns and clears the entries skipped since the last call.
+List<String> drainDecodeWarnings() {
+  final out = List<String>.of(_warnings);
+  _warnings.clear();
+  return out;
+}
diff --git a/lib/api/marianumcloud/autocomplete/autocomplete_api.dart b/lib/api/marianumcloud/autocomplete/autocomplete_api.dart
index 0394871..ae083ff 100644
--- a/lib/api/marianumcloud/autocomplete/autocomplete_api.dart
+++ b/lib/api/marianumcloud/autocomplete/autocomplete_api.dart
@@ -5,6 +5,8 @@ import 'package:http/http.dart' as http;
 import '../../../model/endpoint_data.dart';
 import '../../errors/server_exception.dart';
 import '../../http_errors.dart';
+import '../../json_lenient.dart';
+import '../../marianumconnect/queries/report_client_error/client_error_reporter.dart';
 import '../nextcloud_ocs.dart';
 import 'autocomplete_response.dart';
 
@@ -43,6 +45,13 @@ class AutocompleteApi {
         technicalDetails: 'core/autocomplete/get: ${response.body}',
       );
     }
-    return AutocompleteResponse.fromJson(NextcloudOcs.decode(response.body));
+    final result = AutocompleteResponse.fromJson(
+      NextcloudOcs.decode(response.body),
+    );
+    ClientErrorReporter.reportDecodeWarnings(
+      'Autocomplete',
+      drainDecodeWarnings(),
+    );
+    return result;
   }
 }
diff --git a/lib/api/marianumcloud/autocomplete/autocomplete_response.dart b/lib/api/marianumcloud/autocomplete/autocomplete_response.dart
index 28dcbf1..eb463de 100644
--- a/lib/api/marianumcloud/autocomplete/autocomplete_response.dart
+++ b/lib/api/marianumcloud/autocomplete/autocomplete_response.dart
@@ -1,5 +1,6 @@
 import 'package:json_annotation/json_annotation.dart';
 
+import '../../json_lenient.dart';
 import '../files_sharing/queries/share/share.dart';
 
 part 'autocomplete_response.g.dart';
@@ -14,6 +15,7 @@ int shareTypeFromSource(String? source) {
 
 @JsonSerializable(explicitToJson: true)
 class AutocompleteResponse {
+  @JsonKey(fromJson: _entriesFromJson)
   List<AutocompleteResponseObject> data;
 
   AutocompleteResponse(this.data);
@@ -23,15 +25,31 @@ class AutocompleteResponse {
   Map<String, dynamic> toJson() => _$AutocompleteResponseToJson(this);
 }
 
+List<AutocompleteResponseObject> _entriesFromJson(Object? raw) =>
+    decodeListLenient(
+      raw,
+      AutocompleteResponseObject.fromJson,
+      what: 'autocomplete entry',
+    );
+
+/// The server sends a user-status object for users that have one and an empty
+/// string otherwise; only the status string itself is kept.
+String? _statusFromJson(Object? raw) => switch (raw) {
+  Map<String, dynamic> status => status['status']?.toString(),
+  String status when status.isNotEmpty => status,
+  _ => null,
+};
+
 @JsonSerializable()
 class AutocompleteResponseObject {
   String id;
   String label;
   String? icon;
   String? source;
+  @JsonKey(fromJson: _statusFromJson)
   String? status;
   String? subline;
-  String? shareWithDisplayNameUniqe;
+  String? shareWithDisplayNameUnique;
 
   AutocompleteResponseObject(
     this.id,
@@ -40,7 +58,7 @@ class AutocompleteResponseObject {
     this.source,
     this.status,
     this.subline,
-    this.shareWithDisplayNameUniqe,
+    this.shareWithDisplayNameUnique,
   );
 
   factory AutocompleteResponseObject.fromJson(Map<String, dynamic> json) =>
diff --git a/lib/api/marianumcloud/autocomplete/autocomplete_response.g.dart b/lib/api/marianumcloud/autocomplete/autocomplete_response.g.dart
index 65b9863..50f7394 100644
--- a/lib/api/marianumcloud/autocomplete/autocomplete_response.g.dart
+++ b/lib/api/marianumcloud/autocomplete/autocomplete_response.g.dart
@@ -8,13 +8,12 @@ part of 'autocomplete_response.dart';
 
 AutocompleteResponse _$AutocompleteResponseFromJson(
   Map<String, dynamic> json,
-) => AutocompleteResponse(
-  (json['data'] as List<dynamic>)
-      .map(
-        (e) => AutocompleteResponseObject.fromJson(e as Map<String, dynamic>),
-      )
-      .toList(),
-);
+) => $checkedCreate('AutocompleteResponse', json, ($checkedConvert) {
+  final val = AutocompleteResponse(
+    $checkedConvert('data', (v) => _entriesFromJson(v)),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$AutocompleteResponseToJson(
   AutocompleteResponse instance,
@@ -22,15 +21,18 @@ Map<String, dynamic> _$AutocompleteResponseToJson(
 
 AutocompleteResponseObject _$AutocompleteResponseObjectFromJson(
   Map<String, dynamic> json,
-) => AutocompleteResponseObject(
-  json['id'] as String,
-  json['label'] as String,
-  json['icon'] as String?,
-  json['source'] as String?,
-  json['status'] as String?,
-  json['subline'] as String?,
-  json['shareWithDisplayNameUniqe'] as String?,
-);
+) => $checkedCreate('AutocompleteResponseObject', json, ($checkedConvert) {
+  final val = AutocompleteResponseObject(
+    $checkedConvert('id', (v) => v as String),
+    $checkedConvert('label', (v) => v as String),
+    $checkedConvert('icon', (v) => v as String?),
+    $checkedConvert('source', (v) => v as String?),
+    $checkedConvert('status', (v) => _statusFromJson(v)),
+    $checkedConvert('subline', (v) => v as String?),
+    $checkedConvert('shareWithDisplayNameUnique', (v) => v as String?),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$AutocompleteResponseObjectToJson(
   AutocompleteResponseObject instance,
@@ -41,5 +43,5 @@ Map<String, dynamic> _$AutocompleteResponseObjectToJson(
   'source': instance.source,
   'status': instance.status,
   'subline': instance.subline,
-  'shareWithDisplayNameUniqe': instance.shareWithDisplayNameUniqe,
+  'shareWithDisplayNameUnique': instance.shareWithDisplayNameUnique,
 };
diff --git a/lib/api/marianumcloud/files_sharing/file_sharing_api_params.g.dart b/lib/api/marianumcloud/files_sharing/file_sharing_api_params.g.dart
index e1d482e..6da8b4d 100644
--- a/lib/api/marianumcloud/files_sharing/file_sharing_api_params.g.dart
+++ b/lib/api/marianumcloud/files_sharing/file_sharing_api_params.g.dart
@@ -8,16 +8,19 @@ part of 'file_sharing_api_params.dart';
 
 FileSharingApiParams _$FileSharingApiParamsFromJson(
   Map<String, dynamic> json,
-) => FileSharingApiParams(
-  shareType: (json['shareType'] as num).toInt(),
-  shareWith: json['shareWith'] as String,
-  path: json['path'] as String,
-  referenceId: json['referenceId'] as String?,
-  talkMetaData: json['talkMetaData'] as String?,
-  permissions: (json['permissions'] as num?)?.toInt(),
-  password: json['password'] as String?,
-  expireDate: json['expireDate'] as String?,
-);
+) => $checkedCreate('FileSharingApiParams', json, ($checkedConvert) {
+  final val = FileSharingApiParams(
+    shareType: $checkedConvert('shareType', (v) => (v as num).toInt()),
+    shareWith: $checkedConvert('shareWith', (v) => v as String),
+    path: $checkedConvert('path', (v) => v as String),
+    referenceId: $checkedConvert('referenceId', (v) => v as String?),
+    talkMetaData: $checkedConvert('talkMetaData', (v) => v as String?),
+    permissions: $checkedConvert('permissions', (v) => (v as num?)?.toInt()),
+    password: $checkedConvert('password', (v) => v as String?),
+    expireDate: $checkedConvert('expireDate', (v) => v as String?),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$FileSharingApiParamsToJson(
   FileSharingApiParams instance,
diff --git a/lib/api/marianumcloud/search/search_files_response.g.dart b/lib/api/marianumcloud/search/search_files_response.g.dart
index 64dbe45..d4558ee 100644
--- a/lib/api/marianumcloud/search/search_files_response.g.dart
+++ b/lib/api/marianumcloud/search/search_files_response.g.dart
@@ -7,14 +7,20 @@ part of 'search_files_response.dart';
 // **************************************************************************
 
 SearchFilesResponse _$SearchFilesResponseFromJson(Map<String, dynamic> json) =>
-    SearchFilesResponse(
-      name: json['name'] as String,
-      isPaginated: json['isPaginated'] as bool,
-      cursor: (json['cursor'] as num?)?.toInt(),
-      entries: (json['entries'] as List<dynamic>)
-          .map((e) => SearchFilesEntry.fromJson(e as Map<String, dynamic>))
-          .toList(),
-    );
+    $checkedCreate('SearchFilesResponse', json, ($checkedConvert) {
+      final val = SearchFilesResponse(
+        name: $checkedConvert('name', (v) => v as String),
+        isPaginated: $checkedConvert('isPaginated', (v) => v as bool),
+        cursor: $checkedConvert('cursor', (v) => (v as num?)?.toInt()),
+        entries: $checkedConvert(
+          'entries',
+          (v) => (v as List<dynamic>)
+              .map((e) => SearchFilesEntry.fromJson(e as Map<String, dynamic>))
+              .toList(),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$SearchFilesResponseToJson(
   SearchFilesResponse instance,
@@ -26,13 +32,19 @@ Map<String, dynamic> _$SearchFilesResponseToJson(
 };
 
 SearchFilesEntry _$SearchFilesEntryFromJson(Map<String, dynamic> json) =>
-    SearchFilesEntry(
-      title: json['title'] as String,
-      subline: json['subline'] as String?,
-      icon: json['icon'] as String?,
-      resourceUrl: json['resourceUrl'] as String?,
-      attributes: json['attributes'] as Map<String, dynamic>?,
-    );
+    $checkedCreate('SearchFilesEntry', json, ($checkedConvert) {
+      final val = SearchFilesEntry(
+        title: $checkedConvert('title', (v) => v as String),
+        subline: $checkedConvert('subline', (v) => v as String?),
+        icon: $checkedConvert('icon', (v) => v as String?),
+        resourceUrl: $checkedConvert('resourceUrl', (v) => v as String?),
+        attributes: $checkedConvert(
+          'attributes',
+          (v) => v as Map<String, dynamic>?,
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$SearchFilesEntryToJson(SearchFilesEntry instance) =>
     <String, dynamic>{
diff --git a/lib/api/marianumcloud/talk/chat/get_chat_params.g.dart b/lib/api/marianumcloud/talk/chat/get_chat_params.g.dart
index b318eb6..ede348d 100644
--- a/lib/api/marianumcloud/talk/chat/get_chat_params.g.dart
+++ b/lib/api/marianumcloud/talk/chat/get_chat_params.g.dart
@@ -7,24 +7,33 @@ part of 'get_chat_params.dart';
 // **************************************************************************
 
 GetChatParams _$GetChatParamsFromJson(Map<String, dynamic> json) =>
-    GetChatParams(
-      lookIntoFuture: $enumDecode(
-        _$GetChatParamsSwitchEnumMap,
-        json['lookIntoFuture'],
-      ),
-      limit: (json['limit'] as num?)?.toInt(),
-      lastKnownMessageId: (json['lastKnownMessageId'] as num?)?.toInt(),
-      lastCommonReadId: (json['lastCommonReadId'] as num?)?.toInt(),
-      timeout: (json['timeout'] as num?)?.toInt(),
-      setReadMarker: $enumDecodeNullable(
-        _$GetChatParamsSwitchEnumMap,
-        json['setReadMarker'],
-      ),
-      includeLastKnown: $enumDecodeNullable(
-        _$GetChatParamsSwitchEnumMap,
-        json['includeLastKnown'],
-      ),
-    );
+    $checkedCreate('GetChatParams', json, ($checkedConvert) {
+      final val = GetChatParams(
+        lookIntoFuture: $checkedConvert(
+          'lookIntoFuture',
+          (v) => $enumDecode(_$GetChatParamsSwitchEnumMap, v),
+        ),
+        limit: $checkedConvert('limit', (v) => (v as num?)?.toInt()),
+        lastKnownMessageId: $checkedConvert(
+          'lastKnownMessageId',
+          (v) => (v as num?)?.toInt(),
+        ),
+        lastCommonReadId: $checkedConvert(
+          'lastCommonReadId',
+          (v) => (v as num?)?.toInt(),
+        ),
+        timeout: $checkedConvert('timeout', (v) => (v as num?)?.toInt()),
+        setReadMarker: $checkedConvert(
+          'setReadMarker',
+          (v) => $enumDecodeNullable(_$GetChatParamsSwitchEnumMap, v),
+        ),
+        includeLastKnown: $checkedConvert(
+          'includeLastKnown',
+          (v) => $enumDecodeNullable(_$GetChatParamsSwitchEnumMap, v),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$GetChatParamsToJson(
   GetChatParams instance,
diff --git a/lib/api/marianumcloud/talk/chat/get_chat_response.dart b/lib/api/marianumcloud/talk/chat/get_chat_response.dart
index 7dc5acc..7cb5afd 100644
--- a/lib/api/marianumcloud/talk/chat/get_chat_response.dart
+++ b/lib/api/marianumcloud/talk/chat/get_chat_response.dart
@@ -2,12 +2,14 @@ import 'package:json_annotation/json_annotation.dart';
 
 import '../../../../extensions/date_time.dart';
 import '../../../api_response.dart';
+import '../../../json_lenient.dart';
 import '../room/get_room_response.dart';
 
 part 'get_chat_response.g.dart';
 
 @JsonSerializable(explicitToJson: true)
 class GetChatResponse extends ApiResponse {
+  @JsonKey(fromJson: _messagesFromJson)
   Set<GetChatResponseObject> data;
 
   GetChatResponse(this.data);
@@ -23,15 +25,20 @@ class GetChatResponse extends ApiResponse {
   }
 }
 
+Set<GetChatResponseObject> _messagesFromJson(Object? raw) =>
+    decodeSetLenient(raw, GetChatResponseObject.fromJson, what: 'message');
+
 @JsonSerializable(explicitToJson: true)
 class GetChatResponseObject {
   int id;
   String token;
+  @JsonKey(unknownEnumValue: GetRoomResponseObjectMessageActorType.unknown)
   GetRoomResponseObjectMessageActorType actorType;
   String actorId;
   String actorDisplayName;
   int timestamp;
   String systemMessage;
+  @JsonKey(unknownEnumValue: GetRoomResponseObjectMessageType.unknown)
   GetRoomResponseObjectMessageType messageType;
   bool isReplyable;
   String referenceId;
@@ -40,6 +47,11 @@ class GetChatResponseObject {
   List<String>? reactionsSelf;
   @JsonKey(fromJson: _fromJson)
   Map<String, RichObjectString>? messageParameters;
+
+  /// The quoted message. When the original is no longer available (expired,
+  /// purged) the server only sends `{id, deleted: true}`; that becomes a
+  /// deleted-comment placeholder so the quote still renders.
+  @JsonKey(fromJson: _parentFromJson)
   GetChatResponseObject? parent;
 
   /// Whether the server flagged this message to be rendered as Markdown
@@ -73,11 +85,29 @@ class GetChatResponseObject {
   /// [timestamp] is in seconds.
   DateTime get sentAt => DateTime.fromMillisecondsSinceEpoch(timestamp * 1000);
 
-  static GetChatResponseObject getDateDummy(int timestamp) =>
-      getTextDummy(
-        DateTime.fromMillisecondsSinceEpoch(
-          timestamp * 1000,
-        ).formatDateRelativeShort(),
+  static GetChatResponseObject getDateDummy(int timestamp) => getTextDummy(
+    DateTime.fromMillisecondsSinceEpoch(
+      timestamp * 1000,
+    ).formatDateRelativeShort(),
+  );
+
+  static GetChatResponseObject deletedPlaceholder(int id) =>
+      GetChatResponseObject(
+        id,
+        '',
+        GetRoomResponseObjectMessageActorType.user,
+        '',
+        '',
+        0,
+        '',
+        GetRoomResponseObjectMessageType.deletedComment,
+        false,
+        '',
+        'Nachricht wurde gelöscht',
+        null,
+        null,
+        null,
+        null,
       );
 
   static GetChatResponseObject getTextDummy(String text) =>
@@ -100,14 +130,24 @@ class GetChatResponseObject {
       );
 }
 
+GetChatResponseObject? _parentFromJson(Object? json) {
+  if (json is! Map<String, dynamic>) return null;
+  if (json['deleted'] == true) {
+    return GetChatResponseObject.deletedPlaceholder(
+      (json['id'] as num?)?.toInt() ?? 0,
+    );
+  }
+  return GetChatResponseObject.fromJson(json);
+}
+
 Map<String, RichObjectString>? _fromJson(dynamic json) {
   if (json is Map<String, dynamic>) {
     final data = <String, RichObjectString>{};
-    for (final element in json.keys) {
-      data.putIfAbsent(
-        element,
-        () => RichObjectString.fromJson(json[element] as Map<String, dynamic>),
-      );
+    for (final entry in json.entries) {
+      final value = entry.value;
+      if (value is Map<String, dynamic>) {
+        data[entry.key] = RichObjectString.fromJson(value);
+      }
     }
     return data;
   }
@@ -117,6 +157,7 @@ Map<String, RichObjectString>? _fromJson(dynamic json) {
 
 @JsonSerializable(explicitToJson: true)
 class RichObjectString {
+  @JsonKey(unknownEnumValue: RichObjectStringObjectType.unknown)
   RichObjectStringObjectType type;
   String id;
   String name;
@@ -148,4 +189,14 @@ enum RichObjectStringObjectType {
   geoLocation,
   @JsonValue('call')
   call,
+  @JsonValue('user-group')
+  userGroup,
+  @JsonValue('circle')
+  circle,
+  @JsonValue('email')
+  email,
+
+  /// Anything else (deck cards, contacts, calendar events, ...); the
+  /// placeholder still resolves to the object's name.
+  unknown,
 }
diff --git a/lib/api/marianumcloud/talk/chat/get_chat_response.g.dart b/lib/api/marianumcloud/talk/chat/get_chat_response.g.dart
index 9d48637..b3080ea 100644
--- a/lib/api/marianumcloud/talk/chat/get_chat_response.g.dart
+++ b/lib/api/marianumcloud/talk/chat/get_chat_response.g.dart
@@ -7,16 +7,18 @@ part of 'get_chat_response.dart';
 // **************************************************************************
 
 GetChatResponse _$GetChatResponseFromJson(Map<String, dynamic> json) =>
-    GetChatResponse(
-        (json['data'] as List<dynamic>)
-            .map(
-              (e) => GetChatResponseObject.fromJson(e as Map<String, dynamic>),
-            )
-            .toSet(),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
+    $checkedCreate('GetChatResponse', json, ($checkedConvert) {
+      final val = GetChatResponse(
+        $checkedConvert('data', (v) => _messagesFromJson(v)),
       );
+      $checkedConvert(
+        'headers',
+        (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+          (k, e) => MapEntry(k, e as String),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$GetChatResponseToJson(GetChatResponse instance) =>
     <String, dynamic>{
@@ -26,31 +28,49 @@ Map<String, dynamic> _$GetChatResponseToJson(GetChatResponse instance) =>
 
 GetChatResponseObject _$GetChatResponseObjectFromJson(
   Map<String, dynamic> json,
-) => GetChatResponseObject(
-  (json['id'] as num).toInt(),
-  json['token'] as String,
-  $enumDecode(
-    _$GetRoomResponseObjectMessageActorTypeEnumMap,
-    json['actorType'],
-  ),
-  json['actorId'] as String,
-  json['actorDisplayName'] as String,
-  (json['timestamp'] as num).toInt(),
-  json['systemMessage'] as String,
-  $enumDecode(_$GetRoomResponseObjectMessageTypeEnumMap, json['messageType']),
-  json['isReplyable'] as bool,
-  json['referenceId'] as String,
-  json['message'] as String,
-  _fromJson(json['messageParameters']),
-  (json['reactions'] as Map<String, dynamic>?)?.map(
-    (k, e) => MapEntry(k, (e as num).toInt()),
-  ),
-  (json['reactionsSelf'] as List<dynamic>?)?.map((e) => e as String).toList(),
-  json['parent'] == null
-      ? null
-      : GetChatResponseObject.fromJson(json['parent'] as Map<String, dynamic>),
-  json['markdown'] as bool? ?? false,
-);
+) => $checkedCreate('GetChatResponseObject', json, ($checkedConvert) {
+  final val = GetChatResponseObject(
+    $checkedConvert('id', (v) => (v as num).toInt()),
+    $checkedConvert('token', (v) => v as String),
+    $checkedConvert(
+      'actorType',
+      (v) => $enumDecode(
+        _$GetRoomResponseObjectMessageActorTypeEnumMap,
+        v,
+        unknownValue: GetRoomResponseObjectMessageActorType.unknown,
+      ),
+    ),
+    $checkedConvert('actorId', (v) => v as String),
+    $checkedConvert('actorDisplayName', (v) => v as String),
+    $checkedConvert('timestamp', (v) => (v as num).toInt()),
+    $checkedConvert('systemMessage', (v) => v as String),
+    $checkedConvert(
+      'messageType',
+      (v) => $enumDecode(
+        _$GetRoomResponseObjectMessageTypeEnumMap,
+        v,
+        unknownValue: GetRoomResponseObjectMessageType.unknown,
+      ),
+    ),
+    $checkedConvert('isReplyable', (v) => v as bool),
+    $checkedConvert('referenceId', (v) => v as String),
+    $checkedConvert('message', (v) => v as String),
+    $checkedConvert('messageParameters', (v) => _fromJson(v)),
+    $checkedConvert(
+      'reactions',
+      (v) => (v as Map<String, dynamic>?)?.map(
+        (k, e) => MapEntry(k, (e as num).toInt()),
+      ),
+    ),
+    $checkedConvert(
+      'reactionsSelf',
+      (v) => (v as List<dynamic>?)?.map((e) => e as String).toList(),
+    ),
+    $checkedConvert('parent', (v) => _parentFromJson(v)),
+    $checkedConvert('markdown', (v) => v as bool? ?? false),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$GetChatResponseObjectToJson(
   GetChatResponseObject instance,
@@ -83,6 +103,12 @@ const _$GetRoomResponseObjectMessageActorTypeEnumMap = {
   GetRoomResponseObjectMessageActorType.guest: 'guests',
   GetRoomResponseObjectMessageActorType.bot: 'bots',
   GetRoomResponseObjectMessageActorType.bridge: 'bridged',
+  GetRoomResponseObjectMessageActorType.group: 'groups',
+  GetRoomResponseObjectMessageActorType.email: 'emails',
+  GetRoomResponseObjectMessageActorType.circle: 'circles',
+  GetRoomResponseObjectMessageActorType.federatedUser: 'federated_users',
+  GetRoomResponseObjectMessageActorType.phone: 'phones',
+  GetRoomResponseObjectMessageActorType.unknown: 'unknown',
 };
 
 const _$GetRoomResponseObjectMessageTypeEnumMap = {
@@ -91,16 +117,27 @@ const _$GetRoomResponseObjectMessageTypeEnumMap = {
   GetRoomResponseObjectMessageType.deletedComment: 'comment_deleted',
   GetRoomResponseObjectMessageType.system: 'system',
   GetRoomResponseObjectMessageType.command: 'command',
+  GetRoomResponseObjectMessageType.unknown: 'unknown',
 };
 
 RichObjectString _$RichObjectStringFromJson(Map<String, dynamic> json) =>
-    RichObjectString(
-      $enumDecode(_$RichObjectStringObjectTypeEnumMap, json['type']),
-      json['id'] as String,
-      json['name'] as String,
-      json['path'] as String?,
-      json['link'] as String?,
-    );
+    $checkedCreate('RichObjectString', json, ($checkedConvert) {
+      final val = RichObjectString(
+        $checkedConvert(
+          'type',
+          (v) => $enumDecode(
+            _$RichObjectStringObjectTypeEnumMap,
+            v,
+            unknownValue: RichObjectStringObjectType.unknown,
+          ),
+        ),
+        $checkedConvert('id', (v) => v as String),
+        $checkedConvert('name', (v) => v as String),
+        $checkedConvert('path', (v) => v as String?),
+        $checkedConvert('link', (v) => v as String?),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$RichObjectStringToJson(RichObjectString instance) =>
     <String, dynamic>{
@@ -120,4 +157,8 @@ const _$RichObjectStringObjectTypeEnumMap = {
   RichObjectStringObjectType.talkPoll: 'talk-poll',
   RichObjectStringObjectType.geoLocation: 'geo-location',
   RichObjectStringObjectType.call: 'call',
+  RichObjectStringObjectType.userGroup: 'user-group',
+  RichObjectStringObjectType.circle: 'circle',
+  RichObjectStringObjectType.email: 'email',
+  RichObjectStringObjectType.unknown: 'unknown',
 };
diff --git a/lib/api/marianumcloud/talk/create_poll/create_poll_params.g.dart b/lib/api/marianumcloud/talk/create_poll/create_poll_params.g.dart
index 46dc517..7eacc8e 100644
--- a/lib/api/marianumcloud/talk/create_poll/create_poll_params.g.dart
+++ b/lib/api/marianumcloud/talk/create_poll/create_poll_params.g.dart
@@ -7,14 +7,18 @@ part of 'create_poll_params.dart';
 // **************************************************************************
 
 CreatePollParams _$CreatePollParamsFromJson(Map<String, dynamic> json) =>
-    CreatePollParams(
-      question: json['question'] as String,
-      options: (json['options'] as List<dynamic>)
-          .map((e) => e as String)
-          .toList(),
-      resultMode: (json['resultMode'] as num).toInt(),
-      maxVotes: (json['maxVotes'] as num).toInt(),
-    );
+    $checkedCreate('CreatePollParams', json, ($checkedConvert) {
+      final val = CreatePollParams(
+        question: $checkedConvert('question', (v) => v as String),
+        options: $checkedConvert(
+          'options',
+          (v) => (v as List<dynamic>).map((e) => e as String).toList(),
+        ),
+        resultMode: $checkedConvert('resultMode', (v) => (v as num).toInt()),
+        maxVotes: $checkedConvert('maxVotes', (v) => (v as num).toInt()),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$CreatePollParamsToJson(CreatePollParams instance) =>
     <String, dynamic>{
diff --git a/lib/api/marianumcloud/talk/create_room/create_room_params.g.dart b/lib/api/marianumcloud/talk/create_room/create_room_params.g.dart
index b873df4..0855d25 100644
--- a/lib/api/marianumcloud/talk/create_room/create_room_params.g.dart
+++ b/lib/api/marianumcloud/talk/create_room/create_room_params.g.dart
@@ -7,14 +7,17 @@ part of 'create_room_params.dart';
 // **************************************************************************
 
 CreateRoomParams _$CreateRoomParamsFromJson(Map<String, dynamic> json) =>
-    CreateRoomParams(
-      roomType: (json['roomType'] as num).toInt(),
-      invite: json['invite'] as String,
-      source: json['source'] as String?,
-      roomName: json['roomName'] as String?,
-      objectType: json['objectType'] as String?,
-      objectId: json['objectId'] as String?,
-    );
+    $checkedCreate('CreateRoomParams', json, ($checkedConvert) {
+      final val = CreateRoomParams(
+        roomType: $checkedConvert('roomType', (v) => (v as num).toInt()),
+        invite: $checkedConvert('invite', (v) => v as String),
+        source: $checkedConvert('source', (v) => v as String?),
+        roomName: $checkedConvert('roomName', (v) => v as String?),
+        objectType: $checkedConvert('objectType', (v) => v as String?),
+        objectId: $checkedConvert('objectId', (v) => v as String?),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$CreateRoomParamsToJson(CreateRoomParams instance) =>
     <String, dynamic>{
diff --git a/lib/api/marianumcloud/talk/create_room/create_room_response.g.dart b/lib/api/marianumcloud/talk/create_room/create_room_response.g.dart
index f079e1c..4db5d69 100644
--- a/lib/api/marianumcloud/talk/create_room/create_room_response.g.dart
+++ b/lib/api/marianumcloud/talk/create_room/create_room_response.g.dart
@@ -7,12 +7,21 @@ part of 'create_room_response.dart';
 // **************************************************************************
 
 CreateRoomResponse _$CreateRoomResponseFromJson(Map<String, dynamic> json) =>
-    CreateRoomResponse(
-        CreateRoomResponseData.fromJson(json['data'] as Map<String, dynamic>),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
+    $checkedCreate('CreateRoomResponse', json, ($checkedConvert) {
+      final val = CreateRoomResponse(
+        $checkedConvert(
+          'data',
+          (v) => CreateRoomResponseData.fromJson(v as Map<String, dynamic>),
+        ),
       );
+      $checkedConvert(
+        'headers',
+        (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+          (k, e) => MapEntry(k, e as String),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$CreateRoomResponseToJson(CreateRoomResponse instance) =>
     <String, dynamic>{
@@ -22,7 +31,12 @@ Map<String, dynamic> _$CreateRoomResponseToJson(CreateRoomResponse instance) =>
 
 CreateRoomResponseData _$CreateRoomResponseDataFromJson(
   Map<String, dynamic> json,
-) => CreateRoomResponseData(json['token'] as String);
+) => $checkedCreate('CreateRoomResponseData', json, ($checkedConvert) {
+  final val = CreateRoomResponseData(
+    $checkedConvert('token', (v) => v as String),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$CreateRoomResponseDataToJson(
   CreateRoomResponseData instance,
diff --git a/lib/api/marianumcloud/talk/delete_react_message/delete_react_message_params.g.dart b/lib/api/marianumcloud/talk/delete_react_message/delete_react_message_params.g.dart
index 9f50520..01d66c9 100644
--- a/lib/api/marianumcloud/talk/delete_react_message/delete_react_message_params.g.dart
+++ b/lib/api/marianumcloud/talk/delete_react_message/delete_react_message_params.g.dart
@@ -8,7 +8,12 @@ part of 'delete_react_message_params.dart';
 
 DeleteReactMessageParams _$DeleteReactMessageParamsFromJson(
   Map<String, dynamic> json,
-) => DeleteReactMessageParams(json['reaction'] as String);
+) => $checkedCreate('DeleteReactMessageParams', json, ($checkedConvert) {
+  final val = DeleteReactMessageParams(
+    $checkedConvert('reaction', (v) => v as String),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$DeleteReactMessageParamsToJson(
   DeleteReactMessageParams instance,
diff --git a/lib/api/marianumcloud/talk/get_participants/get_participants_response.dart b/lib/api/marianumcloud/talk/get_participants/get_participants_response.dart
index 12a362b..1fea2d7 100644
--- a/lib/api/marianumcloud/talk/get_participants/get_participants_response.dart
+++ b/lib/api/marianumcloud/talk/get_participants/get_participants_response.dart
@@ -1,11 +1,13 @@
 import 'package:json_annotation/json_annotation.dart';
 
 import '../../../api_response.dart';
+import '../../../json_lenient.dart';
 
 part 'get_participants_response.g.dart';
 
 @JsonSerializable(explicitToJson: true)
 class GetParticipantsResponse extends ApiResponse {
+  @JsonKey(fromJson: _participantsFromJson)
   Set<GetParticipantsResponseObject> data;
 
   GetParticipantsResponse(this.data);
@@ -15,15 +17,25 @@ class GetParticipantsResponse extends ApiResponse {
   Map<String, dynamic> toJson() => _$GetParticipantsResponseToJson(this);
 }
 
+Set<GetParticipantsResponseObject> _participantsFromJson(Object? raw) =>
+    decodeSetLenient(
+      raw,
+      GetParticipantsResponseObject.fromJson,
+      what: 'participant',
+    );
+
 @JsonSerializable(explicitToJson: true)
 class GetParticipantsResponseObject {
   int attendeeId;
   String actorType;
   String actorId;
   String displayName;
+  @JsonKey(unknownEnumValue: GetParticipantsResponseObjectParticipantType.user)
   GetParticipantsResponseObjectParticipantType participantType;
   int lastPing;
-  GetParticipantsResponseObjectParticipantsInCallFlags inCall;
+
+  /// Bitmask: 1 = in call, 2 = with audio, 4 = with video, 8 = via phone.
+  int inCall;
   int permissions;
   int attendeePermissions;
   String? sessionId;
@@ -54,6 +66,11 @@ class GetParticipantsResponseObject {
   factory GetParticipantsResponseObject.fromJson(Map<String, dynamic> json) =>
       _$GetParticipantsResponseObjectFromJson(json);
   Map<String, dynamic> toJson() => _$GetParticipantsResponseObjectToJson(this);
+
+  bool get isInCall => inCall & 1 != 0;
+  bool get inCallWithAudio => inCall & 2 != 0;
+  bool get inCallWithVideo => inCall & 4 != 0;
+  bool get inCallViaPhone => inCall & 8 != 0;
 }
 
 enum GetParticipantsResponseObjectParticipantType {
@@ -73,16 +90,3 @@ enum GetParticipantsResponseObjectParticipantType {
   const GetParticipantsResponseObjectParticipantType(this.prettyName);
   final String prettyName;
 }
-
-enum GetParticipantsResponseObjectParticipantsInCallFlags {
-  @JsonValue(0)
-  disconnected,
-  @JsonValue(1)
-  inCall,
-  @JsonValue(2)
-  providesAudio,
-  @JsonValue(3)
-  providesVideo,
-  @JsonValue(4)
-  usesSipDialIn,
-}
diff --git a/lib/api/marianumcloud/talk/get_participants/get_participants_response.g.dart b/lib/api/marianumcloud/talk/get_participants/get_participants_response.g.dart
index f3fd7cb..d44746c 100644
--- a/lib/api/marianumcloud/talk/get_participants/get_participants_response.g.dart
+++ b/lib/api/marianumcloud/talk/get_participants/get_participants_response.g.dart
@@ -8,19 +8,18 @@ part of 'get_participants_response.dart';
 
 GetParticipantsResponse _$GetParticipantsResponseFromJson(
   Map<String, dynamic> json,
-) =>
-    GetParticipantsResponse(
-        (json['data'] as List<dynamic>)
-            .map(
-              (e) => GetParticipantsResponseObject.fromJson(
-                e as Map<String, dynamic>,
-              ),
-            )
-            .toSet(),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
-      );
+) => $checkedCreate('GetParticipantsResponse', json, ($checkedConvert) {
+  final val = GetParticipantsResponse(
+    $checkedConvert('data', (v) => _participantsFromJson(v)),
+  );
+  $checkedConvert(
+    'headers',
+    (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+      (k, e) => MapEntry(k, e as String),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$GetParticipantsResponseToJson(
   GetParticipantsResponse instance,
@@ -31,29 +30,36 @@ Map<String, dynamic> _$GetParticipantsResponseToJson(
 
 GetParticipantsResponseObject _$GetParticipantsResponseObjectFromJson(
   Map<String, dynamic> json,
-) => GetParticipantsResponseObject(
-  (json['attendeeId'] as num).toInt(),
-  json['actorType'] as String,
-  json['actorId'] as String,
-  json['displayName'] as String,
-  $enumDecode(
-    _$GetParticipantsResponseObjectParticipantTypeEnumMap,
-    json['participantType'],
-  ),
-  (json['lastPing'] as num).toInt(),
-  $enumDecode(
-    _$GetParticipantsResponseObjectParticipantsInCallFlagsEnumMap,
-    json['inCall'],
-  ),
-  (json['permissions'] as num).toInt(),
-  (json['attendeePermissions'] as num).toInt(),
-  json['sessionId'] as String?,
-  (json['sessionIds'] as List<dynamic>).map((e) => e as String).toList(),
-  json['status'] as String?,
-  json['statusIcon'] as String?,
-  json['statusMessage'] as String?,
-  json['roomToken'] as String?,
-);
+) => $checkedCreate('GetParticipantsResponseObject', json, ($checkedConvert) {
+  final val = GetParticipantsResponseObject(
+    $checkedConvert('attendeeId', (v) => (v as num).toInt()),
+    $checkedConvert('actorType', (v) => v as String),
+    $checkedConvert('actorId', (v) => v as String),
+    $checkedConvert('displayName', (v) => v as String),
+    $checkedConvert(
+      'participantType',
+      (v) => $enumDecode(
+        _$GetParticipantsResponseObjectParticipantTypeEnumMap,
+        v,
+        unknownValue: GetParticipantsResponseObjectParticipantType.user,
+      ),
+    ),
+    $checkedConvert('lastPing', (v) => (v as num).toInt()),
+    $checkedConvert('inCall', (v) => (v as num).toInt()),
+    $checkedConvert('permissions', (v) => (v as num).toInt()),
+    $checkedConvert('attendeePermissions', (v) => (v as num).toInt()),
+    $checkedConvert('sessionId', (v) => v as String?),
+    $checkedConvert(
+      'sessionIds',
+      (v) => (v as List<dynamic>).map((e) => e as String).toList(),
+    ),
+    $checkedConvert('status', (v) => v as String?),
+    $checkedConvert('statusIcon', (v) => v as String?),
+    $checkedConvert('statusMessage', (v) => v as String?),
+    $checkedConvert('roomToken', (v) => v as String?),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$GetParticipantsResponseObjectToJson(
   GetParticipantsResponseObject instance,
@@ -66,9 +72,7 @@ Map<String, dynamic> _$GetParticipantsResponseObjectToJson(
       _$GetParticipantsResponseObjectParticipantTypeEnumMap[instance
           .participantType]!,
   'lastPing': instance.lastPing,
-  'inCall':
-      _$GetParticipantsResponseObjectParticipantsInCallFlagsEnumMap[instance
-          .inCall]!,
+  'inCall': instance.inCall,
   'permissions': instance.permissions,
   'attendeePermissions': instance.attendeePermissions,
   'sessionId': instance.sessionId,
@@ -87,11 +91,3 @@ const _$GetParticipantsResponseObjectParticipantTypeEnumMap = {
   GetParticipantsResponseObjectParticipantType.userFollowingPublicLink: 5,
   GetParticipantsResponseObjectParticipantType.guestWithModeratorPermissions: 6,
 };
-
-const _$GetParticipantsResponseObjectParticipantsInCallFlagsEnumMap = {
-  GetParticipantsResponseObjectParticipantsInCallFlags.disconnected: 0,
-  GetParticipantsResponseObjectParticipantsInCallFlags.inCall: 1,
-  GetParticipantsResponseObjectParticipantsInCallFlags.providesAudio: 2,
-  GetParticipantsResponseObjectParticipantsInCallFlags.providesVideo: 3,
-  GetParticipantsResponseObjectParticipantsInCallFlags.usesSipDialIn: 4,
-};
diff --git a/lib/api/marianumcloud/talk/get_poll/get_poll_state_response.g.dart b/lib/api/marianumcloud/talk/get_poll/get_poll_state_response.g.dart
index c81d2f5..8c6f4f2 100644
--- a/lib/api/marianumcloud/talk/get_poll/get_poll_state_response.g.dart
+++ b/lib/api/marianumcloud/talk/get_poll/get_poll_state_response.g.dart
@@ -8,15 +8,21 @@ part of 'get_poll_state_response.dart';
 
 GetPollStateResponse _$GetPollStateResponseFromJson(
   Map<String, dynamic> json,
-) =>
-    GetPollStateResponse(
-        GetPollStateResponseObject.fromJson(
-          json['data'] as Map<String, dynamic>,
-        ),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
-      );
+) => $checkedCreate('GetPollStateResponse', json, ($checkedConvert) {
+  final val = GetPollStateResponse(
+    $checkedConvert(
+      'data',
+      (v) => GetPollStateResponseObject.fromJson(v as Map<String, dynamic>),
+    ),
+  );
+  $checkedConvert(
+    'headers',
+    (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+      (k, e) => MapEntry(k, e as String),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$GetPollStateResponseToJson(
   GetPollStateResponse instance,
@@ -27,21 +33,30 @@ Map<String, dynamic> _$GetPollStateResponseToJson(
 
 GetPollStateResponseObject _$GetPollStateResponseObjectFromJson(
   Map<String, dynamic> json,
-) => GetPollStateResponseObject(
-  (json['id'] as num).toInt(),
-  json['question'] as String,
-  (json['options'] as List<dynamic>).map((e) => e as String).toList(),
-  json['votes'],
-  json['actorType'] as String,
-  json['actorId'] as String,
-  json['actorDisplayName'] as String,
-  (json['status'] as num).toInt(),
-  (json['resultMode'] as num).toInt(),
-  (json['maxVotes'] as num).toInt(),
-  (json['votedSelf'] as List<dynamic>).map((e) => (e as num).toInt()).toList(),
-  (json['numVoters'] as num?)?.toInt(),
-  json['details'] as List<dynamic>?,
-);
+) => $checkedCreate('GetPollStateResponseObject', json, ($checkedConvert) {
+  final val = GetPollStateResponseObject(
+    $checkedConvert('id', (v) => (v as num).toInt()),
+    $checkedConvert('question', (v) => v as String),
+    $checkedConvert(
+      'options',
+      (v) => (v as List<dynamic>).map((e) => e as String).toList(),
+    ),
+    $checkedConvert('votes', (v) => v),
+    $checkedConvert('actorType', (v) => v as String),
+    $checkedConvert('actorId', (v) => v as String),
+    $checkedConvert('actorDisplayName', (v) => v as String),
+    $checkedConvert('status', (v) => (v as num).toInt()),
+    $checkedConvert('resultMode', (v) => (v as num).toInt()),
+    $checkedConvert('maxVotes', (v) => (v as num).toInt()),
+    $checkedConvert(
+      'votedSelf',
+      (v) => (v as List<dynamic>).map((e) => (e as num).toInt()).toList(),
+    ),
+    $checkedConvert('numVoters', (v) => (v as num?)?.toInt()),
+    $checkedConvert('details', (v) => v as List<dynamic>?),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$GetPollStateResponseObjectToJson(
   GetPollStateResponseObject instance,
diff --git a/lib/api/marianumcloud/talk/get_reactions/get_reactions_response.dart b/lib/api/marianumcloud/talk/get_reactions/get_reactions_response.dart
index 1f58dfc..78c9727 100644
--- a/lib/api/marianumcloud/talk/get_reactions/get_reactions_response.dart
+++ b/lib/api/marianumcloud/talk/get_reactions/get_reactions_response.dart
@@ -17,6 +17,7 @@ class GetReactionsResponse extends ApiResponse {
 
 @JsonSerializable()
 class GetReactionsResponseObject {
+  @JsonKey(unknownEnumValue: GetReactionsResponseObjectActorType.unknown)
   GetReactionsResponseObjectActorType actorType;
   String actorId;
   String actorDisplayName;
@@ -39,4 +40,11 @@ enum GetReactionsResponseObjectActorType {
   guests,
   @JsonValue('users')
   users,
+  @JsonValue('emails')
+  emails,
+  @JsonValue('bots')
+  bots,
+  @JsonValue('federated_users')
+  federatedUsers,
+  unknown,
 }
diff --git a/lib/api/marianumcloud/talk/get_reactions/get_reactions_response.g.dart b/lib/api/marianumcloud/talk/get_reactions/get_reactions_response.g.dart
index a050c59..77a8c3b 100644
--- a/lib/api/marianumcloud/talk/get_reactions/get_reactions_response.g.dart
+++ b/lib/api/marianumcloud/talk/get_reactions/get_reactions_response.g.dart
@@ -8,24 +8,32 @@ part of 'get_reactions_response.dart';
 
 GetReactionsResponse _$GetReactionsResponseFromJson(
   Map<String, dynamic> json,
-) =>
-    GetReactionsResponse(
-        (json['data'] as Map<String, dynamic>).map(
-          (k, e) => MapEntry(
-            k,
-            (e as List<dynamic>)
-                .map(
-                  (e) => GetReactionsResponseObject.fromJson(
-                    e as Map<String, dynamic>,
-                  ),
-                )
-                .toList(),
-          ),
+) => $checkedCreate('GetReactionsResponse', json, ($checkedConvert) {
+  final val = GetReactionsResponse(
+    $checkedConvert(
+      'data',
+      (v) => (v as Map<String, dynamic>).map(
+        (k, e) => MapEntry(
+          k,
+          (e as List<dynamic>)
+              .map(
+                (e) => GetReactionsResponseObject.fromJson(
+                  e as Map<String, dynamic>,
+                ),
+              )
+              .toList(),
         ),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
-      );
+      ),
+    ),
+  );
+  $checkedConvert(
+    'headers',
+    (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+      (k, e) => MapEntry(k, e as String),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$GetReactionsResponseToJson(
   GetReactionsResponse instance,
@@ -38,12 +46,22 @@ Map<String, dynamic> _$GetReactionsResponseToJson(
 
 GetReactionsResponseObject _$GetReactionsResponseObjectFromJson(
   Map<String, dynamic> json,
-) => GetReactionsResponseObject(
-  $enumDecode(_$GetReactionsResponseObjectActorTypeEnumMap, json['actorType']),
-  json['actorId'] as String,
-  json['actorDisplayName'] as String,
-  (json['timestamp'] as num).toInt(),
-);
+) => $checkedCreate('GetReactionsResponseObject', json, ($checkedConvert) {
+  final val = GetReactionsResponseObject(
+    $checkedConvert(
+      'actorType',
+      (v) => $enumDecode(
+        _$GetReactionsResponseObjectActorTypeEnumMap,
+        v,
+        unknownValue: GetReactionsResponseObjectActorType.unknown,
+      ),
+    ),
+    $checkedConvert('actorId', (v) => v as String),
+    $checkedConvert('actorDisplayName', (v) => v as String),
+    $checkedConvert('timestamp', (v) => (v as num).toInt()),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$GetReactionsResponseObjectToJson(
   GetReactionsResponseObject instance,
@@ -58,4 +76,8 @@ Map<String, dynamic> _$GetReactionsResponseObjectToJson(
 const _$GetReactionsResponseObjectActorTypeEnumMap = {
   GetReactionsResponseObjectActorType.guests: 'guests',
   GetReactionsResponseObjectActorType.users: 'users',
+  GetReactionsResponseObjectActorType.emails: 'emails',
+  GetReactionsResponseObjectActorType.bots: 'bots',
+  GetReactionsResponseObjectActorType.federatedUsers: 'federated_users',
+  GetReactionsResponseObjectActorType.unknown: 'unknown',
 };
diff --git a/lib/api/marianumcloud/talk/react_message/react_message_params.g.dart b/lib/api/marianumcloud/talk/react_message/react_message_params.g.dart
index 054b0c6..cff54bf 100644
--- a/lib/api/marianumcloud/talk/react_message/react_message_params.g.dart
+++ b/lib/api/marianumcloud/talk/react_message/react_message_params.g.dart
@@ -7,7 +7,12 @@ part of 'react_message_params.dart';
 // **************************************************************************
 
 ReactMessageParams _$ReactMessageParamsFromJson(Map<String, dynamic> json) =>
-    ReactMessageParams(json['reaction'] as String);
+    $checkedCreate('ReactMessageParams', json, ($checkedConvert) {
+      final val = ReactMessageParams(
+        $checkedConvert('reaction', (v) => v as String),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$ReactMessageParamsToJson(ReactMessageParams instance) =>
     <String, dynamic>{'reaction': instance.reaction};
diff --git a/lib/api/marianumcloud/talk/room/get_room.dart b/lib/api/marianumcloud/talk/room/get_room.dart
index 7732ee8..352738d 100644
--- a/lib/api/marianumcloud/talk/room/get_room.dart
+++ b/lib/api/marianumcloud/talk/room/get_room.dart
@@ -1,5 +1,6 @@
 import 'package:flutter/foundation.dart';
 
+import '../../../json_lenient.dart';
 import '../../nextcloud_ocs.dart';
 import '../talk_api.dart';
 import 'get_room_params.dart';
@@ -19,4 +20,5 @@ class GetRoom extends TalkApi<GetRoomResponse> {
 }
 
 GetRoomResponse _parseRooms(String raw) =>
-    GetRoomResponse.fromJson(NextcloudOcs.decode(raw));
+    GetRoomResponse.fromJson(NextcloudOcs.decode(raw))
+      ..parseWarnings = drainDecodeWarnings();
diff --git a/lib/api/marianumcloud/talk/room/get_room_params.dart b/lib/api/marianumcloud/talk/room/get_room_params.dart
index 35dc4b8..f76e70b 100644
--- a/lib/api/marianumcloud/talk/room/get_room_params.dart
+++ b/lib/api/marianumcloud/talk/room/get_room_params.dart
@@ -4,7 +4,7 @@ import '../../../api_params.dart';
 
 part 'get_room_params.g.dart';
 
-@JsonSerializable(explicitToJson: true)
+@JsonSerializable(explicitToJson: true, includeIfNull: false)
 class GetRoomParams extends ApiParams {
   GetRoomParamsStatusUpdate? noStatusUpdate;
   @JsonKey(toJson: _format)
diff --git a/lib/api/marianumcloud/talk/room/get_room_params.g.dart b/lib/api/marianumcloud/talk/room/get_room_params.g.dart
index ceaa6b1..c28f4cb 100644
--- a/lib/api/marianumcloud/talk/room/get_room_params.g.dart
+++ b/lib/api/marianumcloud/talk/room/get_room_params.g.dart
@@ -7,22 +7,28 @@ part of 'get_room_params.dart';
 // **************************************************************************
 
 GetRoomParams _$GetRoomParamsFromJson(Map<String, dynamic> json) =>
-    GetRoomParams(
-      noStatusUpdate: $enumDecodeNullable(
-        _$GetRoomParamsStatusUpdateEnumMap,
-        json['noStatusUpdate'],
-      ),
-      includeStatus: json['includeStatus'] as bool?,
-      modifiedSince: (json['modifiedSince'] as num?)?.toInt(),
-    );
+    $checkedCreate('GetRoomParams', json, ($checkedConvert) {
+      final val = GetRoomParams(
+        noStatusUpdate: $checkedConvert(
+          'noStatusUpdate',
+          (v) => $enumDecodeNullable(_$GetRoomParamsStatusUpdateEnumMap, v),
+        ),
+        includeStatus: $checkedConvert('includeStatus', (v) => v as bool?),
+        modifiedSince: $checkedConvert(
+          'modifiedSince',
+          (v) => (v as num?)?.toInt(),
+        ),
+      );
+      return val;
+    });
 
-Map<String, dynamic> _$GetRoomParamsToJson(
-  GetRoomParams instance,
-) => <String, dynamic>{
-  'noStatusUpdate': _$GetRoomParamsStatusUpdateEnumMap[instance.noStatusUpdate],
-  'includeStatus': GetRoomParams._format(instance.includeStatus),
-  'modifiedSince': instance.modifiedSince,
-};
+Map<String, dynamic> _$GetRoomParamsToJson(GetRoomParams instance) =>
+    <String, dynamic>{
+      'noStatusUpdate':
+          ?_$GetRoomParamsStatusUpdateEnumMap[instance.noStatusUpdate],
+      'includeStatus': GetRoomParams._format(instance.includeStatus),
+      'modifiedSince': ?instance.modifiedSince,
+    };
 
 const _$GetRoomParamsStatusUpdateEnumMap = {
   GetRoomParamsStatusUpdate.defaults: 0,
diff --git a/lib/api/marianumcloud/talk/room/get_room_response.dart b/lib/api/marianumcloud/talk/room/get_room_response.dart
index 5610efa..c59ded3 100644
--- a/lib/api/marianumcloud/talk/room/get_room_response.dart
+++ b/lib/api/marianumcloud/talk/room/get_room_response.dart
@@ -1,12 +1,14 @@
 import 'package:json_annotation/json_annotation.dart';
 
 import '../../../api_response.dart';
+import '../../../json_lenient.dart';
 import '../chat/get_chat_response.dart';
 
 part 'get_room_response.g.dart';
 
 @JsonSerializable(explicitToJson: true)
 class GetRoomResponse extends ApiResponse {
+  @JsonKey(fromJson: _roomsFromJson)
   Set<GetRoomResponseObject> data;
 
   GetRoomResponse(this.data);
@@ -33,10 +35,14 @@ class GetRoomResponse extends ApiResponse {
   }
 }
 
+Set<GetRoomResponseObject> _roomsFromJson(Object? raw) =>
+    decodeSetLenient(raw, GetRoomResponseObject.fromJson, what: 'room');
+
 @JsonSerializable(explicitToJson: true)
 class GetRoomResponseObject {
   int id;
   String token;
+  @JsonKey(unknownEnumValue: GetRoomResponseObjectConversationType.unknown)
   GetRoomResponseObjectConversationType type;
   String name;
   String displayName;
@@ -55,13 +61,20 @@ class GetRoomResponseObject {
   bool canLeaveConversation;
   int lastActivity;
   bool isFavorite;
+  @JsonKey(
+    unknownEnumValue:
+        GetRoomResponseObjectParticipantNotificationLevel.defaultLevel,
+  )
   GetRoomResponseObjectParticipantNotificationLevel notificationLevel;
   int unreadMessages;
   bool unreadMention;
   bool unreadMentionDirect;
   int lastReadMessage;
   int lastCommonReadMessage;
-  GetChatResponseObject lastMessage;
+
+  /// Omitted by the server for rooms without a visible message (empty room,
+  /// last message expired or hidden from this user, federated conversation).
+  GetChatResponseObject? lastMessage;
   String? status;
   String? statusIcon;
   String? statusMessage;
@@ -117,6 +130,9 @@ enum GetRoomResponseObjectConversationType {
   deleted,
   @JsonValue(6)
   noteToSelf,
+
+  /// Fallback for types this app does not know yet; treated like a group.
+  unknown,
 }
 
 enum GetRoomResponseObjectParticipantNotificationLevel {
@@ -147,6 +163,17 @@ enum GetRoomResponseObjectMessageActorType {
   bot,
   @JsonValue('bridged')
   bridge,
+  @JsonValue('groups')
+  group,
+  @JsonValue('emails')
+  email,
+  @JsonValue('circles')
+  circle,
+  @JsonValue('federated_users')
+  federatedUser,
+  @JsonValue('phones')
+  phone,
+  unknown,
 }
 
 enum GetRoomResponseObjectMessageType {
@@ -160,4 +187,8 @@ enum GetRoomResponseObjectMessageType {
   system,
   @JsonValue('command')
   command,
+
+  /// Fallback for types this app does not know yet (e.g. call recordings);
+  /// rendered like a plain comment.
+  unknown,
 }
diff --git a/lib/api/marianumcloud/talk/room/get_room_response.g.dart b/lib/api/marianumcloud/talk/room/get_room_response.g.dart
index edda039..073a3cc 100644
--- a/lib/api/marianumcloud/talk/room/get_room_response.g.dart
+++ b/lib/api/marianumcloud/talk/room/get_room_response.g.dart
@@ -7,16 +7,18 @@ part of 'get_room_response.dart';
 // **************************************************************************
 
 GetRoomResponse _$GetRoomResponseFromJson(Map<String, dynamic> json) =>
-    GetRoomResponse(
-        (json['data'] as List<dynamic>)
-            .map(
-              (e) => GetRoomResponseObject.fromJson(e as Map<String, dynamic>),
-            )
-            .toSet(),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
+    $checkedCreate('GetRoomResponse', json, ($checkedConvert) {
+      final val = GetRoomResponse(
+        $checkedConvert('data', (v) => _roomsFromJson(v)),
       );
+      $checkedConvert(
+        'headers',
+        (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+          (k, e) => MapEntry(k, e as String),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$GetRoomResponseToJson(GetRoomResponse instance) =>
     <String, dynamic>{
@@ -26,41 +28,61 @@ Map<String, dynamic> _$GetRoomResponseToJson(GetRoomResponse instance) =>
 
 GetRoomResponseObject _$GetRoomResponseObjectFromJson(
   Map<String, dynamic> json,
-) => GetRoomResponseObject(
-  (json['id'] as num).toInt(),
-  json['token'] as String,
-  $enumDecode(_$GetRoomResponseObjectConversationTypeEnumMap, json['type']),
-  json['name'] as String,
-  json['displayName'] as String,
-  json['description'] as String,
-  (json['participantType'] as num).toInt(),
-  (json['participantFlags'] as num).toInt(),
-  (json['readOnly'] as num).toInt(),
-  (json['listable'] as num).toInt(),
-  (json['lastPing'] as num).toInt(),
-  json['sessionId'] as String,
-  json['hasPassword'] as bool,
-  json['hasCall'] as bool,
-  (json['callFlag'] as num).toInt(),
-  json['canStartCall'] as bool,
-  json['canDeleteConversation'] as bool,
-  json['canLeaveConversation'] as bool,
-  (json['lastActivity'] as num).toInt(),
-  json['isFavorite'] as bool,
-  $enumDecode(
-    _$GetRoomResponseObjectParticipantNotificationLevelEnumMap,
-    json['notificationLevel'],
-  ),
-  (json['unreadMessages'] as num).toInt(),
-  json['unreadMention'] as bool,
-  json['unreadMentionDirect'] as bool,
-  (json['lastReadMessage'] as num).toInt(),
-  (json['lastCommonReadMessage'] as num).toInt(),
-  GetChatResponseObject.fromJson(json['lastMessage'] as Map<String, dynamic>),
-  json['status'] as String?,
-  json['statusIcon'] as String?,
-  json['statusMessage'] as String?,
-);
+) => $checkedCreate('GetRoomResponseObject', json, ($checkedConvert) {
+  final val = GetRoomResponseObject(
+    $checkedConvert('id', (v) => (v as num).toInt()),
+    $checkedConvert('token', (v) => v as String),
+    $checkedConvert(
+      'type',
+      (v) => $enumDecode(
+        _$GetRoomResponseObjectConversationTypeEnumMap,
+        v,
+        unknownValue: GetRoomResponseObjectConversationType.unknown,
+      ),
+    ),
+    $checkedConvert('name', (v) => v as String),
+    $checkedConvert('displayName', (v) => v as String),
+    $checkedConvert('description', (v) => v as String),
+    $checkedConvert('participantType', (v) => (v as num).toInt()),
+    $checkedConvert('participantFlags', (v) => (v as num).toInt()),
+    $checkedConvert('readOnly', (v) => (v as num).toInt()),
+    $checkedConvert('listable', (v) => (v as num).toInt()),
+    $checkedConvert('lastPing', (v) => (v as num).toInt()),
+    $checkedConvert('sessionId', (v) => v as String),
+    $checkedConvert('hasPassword', (v) => v as bool),
+    $checkedConvert('hasCall', (v) => v as bool),
+    $checkedConvert('callFlag', (v) => (v as num).toInt()),
+    $checkedConvert('canStartCall', (v) => v as bool),
+    $checkedConvert('canDeleteConversation', (v) => v as bool),
+    $checkedConvert('canLeaveConversation', (v) => v as bool),
+    $checkedConvert('lastActivity', (v) => (v as num).toInt()),
+    $checkedConvert('isFavorite', (v) => v as bool),
+    $checkedConvert(
+      'notificationLevel',
+      (v) => $enumDecode(
+        _$GetRoomResponseObjectParticipantNotificationLevelEnumMap,
+        v,
+        unknownValue:
+            GetRoomResponseObjectParticipantNotificationLevel.defaultLevel,
+      ),
+    ),
+    $checkedConvert('unreadMessages', (v) => (v as num).toInt()),
+    $checkedConvert('unreadMention', (v) => v as bool),
+    $checkedConvert('unreadMentionDirect', (v) => v as bool),
+    $checkedConvert('lastReadMessage', (v) => (v as num).toInt()),
+    $checkedConvert('lastCommonReadMessage', (v) => (v as num).toInt()),
+    $checkedConvert(
+      'lastMessage',
+      (v) => v == null
+          ? null
+          : GetChatResponseObject.fromJson(v as Map<String, dynamic>),
+    ),
+    $checkedConvert('status', (v) => v as String?),
+    $checkedConvert('statusIcon', (v) => v as String?),
+    $checkedConvert('statusMessage', (v) => v as String?),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$GetRoomResponseObjectToJson(
   GetRoomResponseObject instance,
@@ -93,7 +115,7 @@ Map<String, dynamic> _$GetRoomResponseObjectToJson(
   'unreadMentionDirect': instance.unreadMentionDirect,
   'lastReadMessage': instance.lastReadMessage,
   'lastCommonReadMessage': instance.lastCommonReadMessage,
-  'lastMessage': instance.lastMessage.toJson(),
+  'lastMessage': instance.lastMessage?.toJson(),
   'status': instance.status,
   'statusIcon': instance.statusIcon,
   'statusMessage': instance.statusMessage,
@@ -106,6 +128,7 @@ const _$GetRoomResponseObjectConversationTypeEnumMap = {
   GetRoomResponseObjectConversationType.changelog: 4,
   GetRoomResponseObjectConversationType.deleted: 5,
   GetRoomResponseObjectConversationType.noteToSelf: 6,
+  GetRoomResponseObjectConversationType.unknown: 'unknown',
 };
 
 const _$GetRoomResponseObjectParticipantNotificationLevelEnumMap = {
diff --git a/lib/api/marianumcloud/talk/send_message/send_message_params.g.dart b/lib/api/marianumcloud/talk/send_message/send_message_params.g.dart
index 34e1d0c..b4f60a9 100644
--- a/lib/api/marianumcloud/talk/send_message/send_message_params.g.dart
+++ b/lib/api/marianumcloud/talk/send_message/send_message_params.g.dart
@@ -7,10 +7,13 @@ part of 'send_message_params.dart';
 // **************************************************************************
 
 SendMessageParams _$SendMessageParamsFromJson(Map<String, dynamic> json) =>
-    SendMessageParams(
-      json['message'] as String,
-      replyTo: json['replyTo'] as String?,
-    );
+    $checkedCreate('SendMessageParams', json, ($checkedConvert) {
+      final val = SendMessageParams(
+        $checkedConvert('message', (v) => v as String),
+        replyTo: $checkedConvert('replyTo', (v) => v as String?),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$SendMessageParamsToJson(SendMessageParams instance) =>
     <String, dynamic>{
diff --git a/lib/api/marianumcloud/talk/set_read_marker/set_read_marker_params.g.dart b/lib/api/marianumcloud/talk/set_read_marker/set_read_marker_params.g.dart
index e6067b1..0dfe958 100644
--- a/lib/api/marianumcloud/talk/set_read_marker/set_read_marker_params.g.dart
+++ b/lib/api/marianumcloud/talk/set_read_marker/set_read_marker_params.g.dart
@@ -7,9 +7,15 @@ part of 'set_read_marker_params.dart';
 // **************************************************************************
 
 SetReadMarkerParams _$SetReadMarkerParamsFromJson(Map<String, dynamic> json) =>
-    SetReadMarkerParams(
-      lastReadMessage: (json['lastReadMessage'] as num?)?.toInt(),
-    );
+    $checkedCreate('SetReadMarkerParams', json, ($checkedConvert) {
+      final val = SetReadMarkerParams(
+        lastReadMessage: $checkedConvert(
+          'lastReadMessage',
+          (v) => (v as num?)?.toInt(),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$SetReadMarkerParamsToJson(
   SetReadMarkerParams instance,
diff --git a/lib/api/marianumcloud/talk/talk_api.dart b/lib/api/marianumcloud/talk/talk_api.dart
index 2d743e1..8206596 100644
--- a/lib/api/marianumcloud/talk/talk_api.dart
+++ b/lib/api/marianumcloud/talk/talk_api.dart
@@ -8,6 +8,8 @@ import '../../errors/network_exception.dart';
 import '../../errors/parse_exception.dart';
 import '../../errors/talk_exception.dart';
 import '../../http_errors.dart';
+import '../../json_lenient.dart';
+import '../../marianumconnect/queries/report_client_error/client_error_reporter.dart';
 import '../nextcloud_ocs.dart';
 import 'talk_error.dart';
 
@@ -73,12 +75,17 @@ abstract class TalkApi<T extends ApiResponse?> {
       throwForStatus(status, detail);
     }
 
+    final T assembled;
     try {
-      final assembled = await assembleAsync(data.body);
-      assembled?.headers = data.headers;
-      return assembled;
+      assembled = await assembleAsync(data.body);
     } catch (e) {
       throw ParseException(technicalDetails: 'Talk $endpoint assemble: $e');
     }
+    assembled?.headers = data.headers;
+    ClientErrorReporter.reportDecodeWarnings('Talk $path', [
+      ...?assembled?.parseWarnings,
+      ...drainDecodeWarnings(),
+    ]);
+    return assembled;
   }
 }
diff --git a/lib/api/marianumcloud/talk/vote_poll/vote_poll_params.g.dart b/lib/api/marianumcloud/talk/vote_poll/vote_poll_params.g.dart
index e97aa57..8905af1 100644
--- a/lib/api/marianumcloud/talk/vote_poll/vote_poll_params.g.dart
+++ b/lib/api/marianumcloud/talk/vote_poll/vote_poll_params.g.dart
@@ -7,11 +7,15 @@ part of 'vote_poll_params.dart';
 // **************************************************************************
 
 VotePollParams _$VotePollParamsFromJson(Map<String, dynamic> json) =>
-    VotePollParams(
-      optionIds: (json['optionIds'] as List<dynamic>)
-          .map((e) => (e as num).toInt())
-          .toList(),
-    );
+    $checkedCreate('VotePollParams', json, ($checkedConvert) {
+      final val = VotePollParams(
+        optionIds: $checkedConvert(
+          'optionIds',
+          (v) => (v as List<dynamic>).map((e) => (e as num).toInt()).toList(),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$VotePollParamsToJson(VotePollParams instance) =>
     <String, dynamic>{'optionIds': instance.optionIds};
diff --git a/lib/api/marianumcloud/webdav/queries/list_files/cacheable_file.g.dart b/lib/api/marianumcloud/webdav/queries/list_files/cacheable_file.g.dart
index c123d6c..03837d9 100644
--- a/lib/api/marianumcloud/webdav/queries/list_files/cacheable_file.g.dart
+++ b/lib/api/marianumcloud/webdav/queries/list_files/cacheable_file.g.dart
@@ -7,23 +7,28 @@ part of 'cacheable_file.dart';
 // **************************************************************************
 
 CacheableFile _$CacheableFileFromJson(Map<String, dynamic> json) =>
-    CacheableFile(
-      path: json['path'] as String,
-      isDirectory: json['isDirectory'] as bool,
-      name: json['name'] as String,
-      mimeType: json['mimeType'] as String?,
-      size: (json['size'] as num?)?.toInt(),
-      eTag: json['eTag'] as String?,
-      createdAt: json['createdAt'] == null
-          ? null
-          : DateTime.parse(json['createdAt'] as String),
-      modifiedAt: json['modifiedAt'] == null
-          ? null
-          : DateTime.parse(json['modifiedAt'] as String),
-      fileId: (json['fileId'] as num?)?.toInt(),
-      hasPreview: json['hasPreview'] as bool?,
-      isSharedWithMe: json['isSharedWithMe'] as bool?,
-    );
+    $checkedCreate('CacheableFile', json, ($checkedConvert) {
+      final val = CacheableFile(
+        path: $checkedConvert('path', (v) => v as String),
+        isDirectory: $checkedConvert('isDirectory', (v) => v as bool),
+        name: $checkedConvert('name', (v) => v as String),
+        mimeType: $checkedConvert('mimeType', (v) => v as String?),
+        size: $checkedConvert('size', (v) => (v as num?)?.toInt()),
+        eTag: $checkedConvert('eTag', (v) => v as String?),
+        createdAt: $checkedConvert(
+          'createdAt',
+          (v) => v == null ? null : DateTime.parse(v as String),
+        ),
+        modifiedAt: $checkedConvert(
+          'modifiedAt',
+          (v) => v == null ? null : DateTime.parse(v as String),
+        ),
+        fileId: $checkedConvert('fileId', (v) => (v as num?)?.toInt()),
+        hasPreview: $checkedConvert('hasPreview', (v) => v as bool?),
+        isSharedWithMe: $checkedConvert('isSharedWithMe', (v) => v as bool?),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$CacheableFileToJson(CacheableFile instance) =>
     <String, dynamic>{
diff --git a/lib/api/marianumcloud/webdav/queries/list_files/list_files_params.g.dart b/lib/api/marianumcloud/webdav/queries/list_files/list_files_params.g.dart
index 29f551f..2e9828b 100644
--- a/lib/api/marianumcloud/webdav/queries/list_files/list_files_params.g.dart
+++ b/lib/api/marianumcloud/webdav/queries/list_files/list_files_params.g.dart
@@ -7,7 +7,10 @@ part of 'list_files_params.dart';
 // **************************************************************************
 
 ListFilesParams _$ListFilesParamsFromJson(Map<String, dynamic> json) =>
-    ListFilesParams(json['path'] as String);
+    $checkedCreate('ListFilesParams', json, ($checkedConvert) {
+      final val = ListFilesParams($checkedConvert('path', (v) => v as String));
+      return val;
+    });
 
 Map<String, dynamic> _$ListFilesParamsToJson(ListFilesParams instance) =>
     <String, dynamic>{'path': instance.path};
diff --git a/lib/api/marianumcloud/webdav/queries/list_files/list_files_response.g.dart b/lib/api/marianumcloud/webdav/queries/list_files/list_files_response.g.dart
index 09123cc..c915e84 100644
--- a/lib/api/marianumcloud/webdav/queries/list_files/list_files_response.g.dart
+++ b/lib/api/marianumcloud/webdav/queries/list_files/list_files_response.g.dart
@@ -7,14 +7,23 @@ part of 'list_files_response.dart';
 // **************************************************************************
 
 ListFilesResponse _$ListFilesResponseFromJson(Map<String, dynamic> json) =>
-    ListFilesResponse(
-        (json['files'] as List<dynamic>)
-            .map((e) => CacheableFile.fromJson(e as Map<String, dynamic>))
-            .toSet(),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
+    $checkedCreate('ListFilesResponse', json, ($checkedConvert) {
+      final val = ListFilesResponse(
+        $checkedConvert(
+          'files',
+          (v) => (v as List<dynamic>)
+              .map((e) => CacheableFile.fromJson(e as Map<String, dynamic>))
+              .toSet(),
+        ),
       );
+      $checkedConvert(
+        'headers',
+        (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+          (k, e) => MapEntry(k, e as String),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$ListFilesResponseToJson(ListFilesResponse instance) =>
     <String, dynamic>{
diff --git a/lib/api/marianumconnect/models/mc_holiday.g.dart b/lib/api/marianumconnect/models/mc_holiday.g.dart
index 4d52890..1fe887c 100644
--- a/lib/api/marianumconnect/models/mc_holiday.g.dart
+++ b/lib/api/marianumconnect/models/mc_holiday.g.dart
@@ -6,12 +6,22 @@ part of 'mc_holiday.dart';
 // JsonSerializableGenerator
 // **************************************************************************
 
-McHoliday _$McHolidayFromJson(Map<String, dynamic> json) => McHoliday(
-  shortName: json['shortName'] as String,
-  longName: json['longName'] as String,
-  startDate: McHoliday._dateFromJson(json['startDate'] as String),
-  endDate: McHoliday._dateFromJson(json['endDate'] as String),
-);
+McHoliday _$McHolidayFromJson(Map<String, dynamic> json) =>
+    $checkedCreate('McHoliday', json, ($checkedConvert) {
+      final val = McHoliday(
+        shortName: $checkedConvert('shortName', (v) => v as String),
+        longName: $checkedConvert('longName', (v) => v as String),
+        startDate: $checkedConvert(
+          'startDate',
+          (v) => McHoliday._dateFromJson(v as String),
+        ),
+        endDate: $checkedConvert(
+          'endDate',
+          (v) => McHoliday._dateFromJson(v as String),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$McHolidayToJson(McHoliday instance) => <String, dynamic>{
   'shortName': instance.shortName,
diff --git a/lib/api/marianumconnect/queries/absence/absence_prefill_response.g.dart b/lib/api/marianumconnect/queries/absence/absence_prefill_response.g.dart
index e8f5425..14ef1dd 100644
--- a/lib/api/marianumconnect/queries/absence/absence_prefill_response.g.dart
+++ b/lib/api/marianumconnect/queries/absence/absence_prefill_response.g.dart
@@ -8,12 +8,15 @@ part of 'absence_prefill_response.dart';
 
 AbsencePrefillResponse _$AbsencePrefillResponseFromJson(
   Map<String, dynamic> json,
-) => AbsencePrefillResponse(
-  firstName: json['firstName'] as String? ?? '',
-  lastName: json['lastName'] as String? ?? '',
-  className: json['className'] as String? ?? '',
-  phone: json['phone'] as String? ?? '',
-);
+) => $checkedCreate('AbsencePrefillResponse', json, ($checkedConvert) {
+  final val = AbsencePrefillResponse(
+    firstName: $checkedConvert('firstName', (v) => v as String? ?? ''),
+    lastName: $checkedConvert('lastName', (v) => v as String? ?? ''),
+    className: $checkedConvert('className', (v) => v as String? ?? ''),
+    phone: $checkedConvert('phone', (v) => v as String? ?? ''),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$AbsencePrefillResponseToJson(
   AbsencePrefillResponse instance,
diff --git a/lib/api/marianumconnect/queries/auth_login/auth_login_response.g.dart b/lib/api/marianumconnect/queries/auth_login/auth_login_response.g.dart
index 591ccc4..e8aabbe 100644
--- a/lib/api/marianumconnect/queries/auth_login/auth_login_response.g.dart
+++ b/lib/api/marianumconnect/queries/auth_login/auth_login_response.g.dart
@@ -7,14 +7,17 @@ part of 'auth_login_response.dart';
 // **************************************************************************
 
 AuthLoginUser _$AuthLoginUserFromJson(Map<String, dynamic> json) =>
-    AuthLoginUser(
-      id: json['id'] as String,
-      username: json['username'] as String,
-      firstName: json['firstName'] as String,
-      lastName: json['lastName'] as String,
-      userType: json['userType'] as String?,
-      className: json['className'] as String?,
-    );
+    $checkedCreate('AuthLoginUser', json, ($checkedConvert) {
+      final val = AuthLoginUser(
+        id: $checkedConvert('id', (v) => v as String),
+        username: $checkedConvert('username', (v) => v as String),
+        firstName: $checkedConvert('firstName', (v) => v as String),
+        lastName: $checkedConvert('lastName', (v) => v as String),
+        userType: $checkedConvert('userType', (v) => v as String?),
+        className: $checkedConvert('className', (v) => v as String?),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$AuthLoginUserToJson(AuthLoginUser instance) =>
     <String, dynamic>{
@@ -27,12 +30,21 @@ Map<String, dynamic> _$AuthLoginUserToJson(AuthLoginUser instance) =>
     };
 
 AuthLoginResponse _$AuthLoginResponseFromJson(Map<String, dynamic> json) =>
-    AuthLoginResponse(
-      token: json['token'] as String,
-      tokenId: json['tokenId'] as String,
-      expiresAt: AuthLoginResponse._expiresFromJson(json['expiresAt']),
-      user: AuthLoginUser.fromJson(json['user'] as Map<String, dynamic>),
-    );
+    $checkedCreate('AuthLoginResponse', json, ($checkedConvert) {
+      final val = AuthLoginResponse(
+        token: $checkedConvert('token', (v) => v as String),
+        tokenId: $checkedConvert('tokenId', (v) => v as String),
+        expiresAt: $checkedConvert(
+          'expiresAt',
+          (v) => AuthLoginResponse._expiresFromJson(v),
+        ),
+        user: $checkedConvert(
+          'user',
+          (v) => AuthLoginUser.fromJson(v as Map<String, dynamic>),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$AuthLoginResponseToJson(AuthLoginResponse instance) =>
     <String, dynamic>{
diff --git a/lib/api/marianumconnect/queries/get_breakers/get_breakers_response.dart b/lib/api/marianumconnect/queries/get_breakers/get_breakers_response.dart
index 8e36f9e..43e8c4c 100644
--- a/lib/api/marianumconnect/queries/get_breakers/get_breakers_response.dart
+++ b/lib/api/marianumconnect/queries/get_breakers/get_breakers_response.dart
@@ -25,6 +25,7 @@ class GetBreakersResponse extends ApiResponse {
 
 @JsonSerializable()
 class BreakerRule {
+  @JsonKey(unknownEnumValue: BreakerArea.unknown)
   List<BreakerArea> areas;
   String message;
 
@@ -69,4 +70,7 @@ enum BreakerArea {
   feedback,
   @JsonValue('MORE')
   more,
+
+  /// An area the backend added after this build; no module maps to it.
+  unknown,
 }
diff --git a/lib/api/marianumconnect/queries/get_breakers/get_breakers_response.g.dart b/lib/api/marianumconnect/queries/get_breakers/get_breakers_response.g.dart
index 9dcea44..16055a3 100644
--- a/lib/api/marianumconnect/queries/get_breakers/get_breakers_response.g.dart
+++ b/lib/api/marianumconnect/queries/get_breakers/get_breakers_response.g.dart
@@ -7,15 +7,25 @@ part of 'get_breakers_response.dart';
 // **************************************************************************
 
 GetBreakersResponse _$GetBreakersResponseFromJson(Map<String, dynamic> json) =>
-    GetBreakersResponse(
-        (json['rules'] as List<dynamic>?)
-                ?.map((e) => BreakerRule.fromJson(e as Map<String, dynamic>))
-                .toList() ??
-            [],
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
+    $checkedCreate('GetBreakersResponse', json, ($checkedConvert) {
+      final val = GetBreakersResponse(
+        $checkedConvert(
+          'rules',
+          (v) =>
+              (v as List<dynamic>?)
+                  ?.map((e) => BreakerRule.fromJson(e as Map<String, dynamic>))
+                  .toList() ??
+              [],
+        ),
       );
+      $checkedConvert(
+        'headers',
+        (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+          (k, e) => MapEntry(k, e as String),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$GetBreakersResponseToJson(
   GetBreakersResponse instance,
@@ -24,13 +34,26 @@ Map<String, dynamic> _$GetBreakersResponseToJson(
   'rules': instance.rules.map((e) => e.toJson()).toList(),
 };
 
-BreakerRule _$BreakerRuleFromJson(Map<String, dynamic> json) => BreakerRule(
-  (json['areas'] as List<dynamic>)
-      .map((e) => $enumDecode(_$BreakerAreaEnumMap, e))
-      .toList(),
-  json['message'] as String,
-  (json['maxBuild'] as num?)?.toInt(),
-);
+BreakerRule _$BreakerRuleFromJson(Map<String, dynamic> json) =>
+    $checkedCreate('BreakerRule', json, ($checkedConvert) {
+      final val = BreakerRule(
+        $checkedConvert(
+          'areas',
+          (v) => (v as List<dynamic>)
+              .map(
+                (e) => $enumDecode(
+                  _$BreakerAreaEnumMap,
+                  e,
+                  unknownValue: BreakerArea.unknown,
+                ),
+              )
+              .toList(),
+        ),
+        $checkedConvert('message', (v) => v as String),
+        $checkedConvert('maxBuild', (v) => (v as num?)?.toInt()),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$BreakerRuleToJson(BreakerRule instance) =>
     <String, dynamic>{
@@ -52,4 +75,5 @@ const _$BreakerAreaEnumMap = {
   BreakerArea.dates: 'DATES',
   BreakerArea.feedback: 'FEEDBACK',
   BreakerArea.more: 'MORE',
+  BreakerArea.unknown: 'unknown',
 };
diff --git a/lib/api/marianumconnect/queries/get_capabilities/get_capabilities_response.g.dart b/lib/api/marianumconnect/queries/get_capabilities/get_capabilities_response.g.dart
index 2f5ac3e..55689f6 100644
--- a/lib/api/marianumconnect/queries/get_capabilities/get_capabilities_response.g.dart
+++ b/lib/api/marianumconnect/queries/get_capabilities/get_capabilities_response.g.dart
@@ -8,13 +8,28 @@ part of 'get_capabilities_response.dart';
 
 CapabilitiesResponse _$CapabilitiesResponseFromJson(
   Map<String, dynamic> json,
-) => CapabilitiesResponse(
-  viewForeignTimetables: json['viewForeignTimetables'] as bool? ?? false,
-  pushNotifications: json['pushNotifications'] as bool? ?? false,
-  timetablePastDays: (json['timetablePastDays'] as num?)?.toInt(),
-  timetableFutureDays: (json['timetableFutureDays'] as num?)?.toInt(),
-  userType: json['userType'] as String?,
-);
+) => $checkedCreate('CapabilitiesResponse', json, ($checkedConvert) {
+  final val = CapabilitiesResponse(
+    viewForeignTimetables: $checkedConvert(
+      'viewForeignTimetables',
+      (v) => v as bool? ?? false,
+    ),
+    pushNotifications: $checkedConvert(
+      'pushNotifications',
+      (v) => v as bool? ?? false,
+    ),
+    timetablePastDays: $checkedConvert(
+      'timetablePastDays',
+      (v) => (v as num?)?.toInt(),
+    ),
+    timetableFutureDays: $checkedConvert(
+      'timetableFutureDays',
+      (v) => (v as num?)?.toInt(),
+    ),
+    userType: $checkedConvert('userType', (v) => v as String?),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$CapabilitiesResponseToJson(
   CapabilitiesResponse instance,
diff --git a/lib/api/marianumconnect/queries/get_ticker/get_ticker_response.g.dart b/lib/api/marianumconnect/queries/get_ticker/get_ticker_response.g.dart
index 57c74ae..00a2403 100644
--- a/lib/api/marianumconnect/queries/get_ticker/get_ticker_response.g.dart
+++ b/lib/api/marianumconnect/queries/get_ticker/get_ticker_response.g.dart
@@ -7,14 +7,20 @@ part of 'get_ticker_response.dart';
 // **************************************************************************
 
 TickerResponse _$TickerResponseFromJson(Map<String, dynamic> json) =>
-    TickerResponse(
-      schemaVersion: (json['schemaVersion'] as num?)?.toInt() ?? 1,
-      available: json['available'] as bool? ?? false,
-      hash: json['hash'] as String?,
-      publishedAt: json['publishedAt'] as String?,
-      webUrl: json['webUrl'] as String? ?? '/ticker',
-      content: json['content'] as Map<String, dynamic>?,
-    );
+    $checkedCreate('TickerResponse', json, ($checkedConvert) {
+      final val = TickerResponse(
+        schemaVersion: $checkedConvert(
+          'schemaVersion',
+          (v) => (v as num?)?.toInt() ?? 1,
+        ),
+        available: $checkedConvert('available', (v) => v as bool? ?? false),
+        hash: $checkedConvert('hash', (v) => v as String?),
+        publishedAt: $checkedConvert('publishedAt', (v) => v as String?),
+        webUrl: $checkedConvert('webUrl', (v) => v as String? ?? '/ticker'),
+        content: $checkedConvert('content', (v) => v as Map<String, dynamic>?),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$TickerResponseToJson(TickerResponse instance) =>
     <String, dynamic>{
diff --git a/lib/api/marianumconnect/queries/get_ticker_nav/get_ticker_nav_response.g.dart b/lib/api/marianumconnect/queries/get_ticker_nav/get_ticker_nav_response.g.dart
index 59247c2..77183f3 100644
--- a/lib/api/marianumconnect/queries/get_ticker_nav/get_ticker_nav_response.g.dart
+++ b/lib/api/marianumconnect/queries/get_ticker_nav/get_ticker_nav_response.g.dart
@@ -7,15 +7,26 @@ part of 'get_ticker_nav_response.dart';
 // **************************************************************************
 
 TickerNavResponse _$TickerNavResponseFromJson(Map<String, dynamic> json) =>
-    TickerNavResponse(
-      schemaVersion: (json['schemaVersion'] as num?)?.toInt() ?? 1,
-      navHash: json['navHash'] as String? ?? '',
-      sections:
-          (json['sections'] as List<dynamic>?)
-              ?.map((e) => TickerNavSection.fromJson(e as Map<String, dynamic>))
-              .toList() ??
-          [],
-    );
+    $checkedCreate('TickerNavResponse', json, ($checkedConvert) {
+      final val = TickerNavResponse(
+        schemaVersion: $checkedConvert(
+          'schemaVersion',
+          (v) => (v as num?)?.toInt() ?? 1,
+        ),
+        navHash: $checkedConvert('navHash', (v) => v as String? ?? ''),
+        sections: $checkedConvert(
+          'sections',
+          (v) =>
+              (v as List<dynamic>?)
+                  ?.map(
+                    (e) => TickerNavSection.fromJson(e as Map<String, dynamic>),
+                  )
+                  .toList() ??
+              [],
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$TickerNavResponseToJson(TickerNavResponse instance) =>
     <String, dynamic>{
@@ -25,14 +36,22 @@ Map<String, dynamic> _$TickerNavResponseToJson(TickerNavResponse instance) =>
     };
 
 TickerNavSection _$TickerNavSectionFromJson(Map<String, dynamic> json) =>
-    TickerNavSection(
-      title: json['title'] as String? ?? '',
-      pages:
-          (json['pages'] as List<dynamic>?)
-              ?.map((e) => TickerNavPage.fromJson(e as Map<String, dynamic>))
-              .toList() ??
-          [],
-    );
+    $checkedCreate('TickerNavSection', json, ($checkedConvert) {
+      final val = TickerNavSection(
+        title: $checkedConvert('title', (v) => v as String? ?? ''),
+        pages: $checkedConvert(
+          'pages',
+          (v) =>
+              (v as List<dynamic>?)
+                  ?.map(
+                    (e) => TickerNavPage.fromJson(e as Map<String, dynamic>),
+                  )
+                  .toList() ??
+              [],
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$TickerNavSectionToJson(TickerNavSection instance) =>
     <String, dynamic>{
@@ -41,15 +60,21 @@ Map<String, dynamic> _$TickerNavSectionToJson(TickerNavSection instance) =>
     };
 
 TickerNavPage _$TickerNavPageFromJson(Map<String, dynamic> json) =>
-    TickerNavPage(
-      title: json['title'] as String? ?? '',
-      slug: json['slug'] as String? ?? '',
-      kind: json['kind'] as String? ?? 'CONTENT',
-      hash: json['hash'] as String?,
-      externalUrl: json['externalUrl'] as String?,
-      externalUrlNewTab: json['externalUrlNewTab'] as bool?,
-      fileUrl: json['fileUrl'] as String?,
-    );
+    $checkedCreate('TickerNavPage', json, ($checkedConvert) {
+      final val = TickerNavPage(
+        title: $checkedConvert('title', (v) => v as String? ?? ''),
+        slug: $checkedConvert('slug', (v) => v as String? ?? ''),
+        kind: $checkedConvert('kind', (v) => v as String? ?? 'CONTENT'),
+        hash: $checkedConvert('hash', (v) => v as String?),
+        externalUrl: $checkedConvert('externalUrl', (v) => v as String?),
+        externalUrlNewTab: $checkedConvert(
+          'externalUrlNewTab',
+          (v) => v as bool?,
+        ),
+        fileUrl: $checkedConvert('fileUrl', (v) => v as String?),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$TickerNavPageToJson(TickerNavPage instance) =>
     <String, dynamic>{
diff --git a/lib/api/marianumconnect/queries/get_ticker_page/get_ticker_page_response.g.dart b/lib/api/marianumconnect/queries/get_ticker_page/get_ticker_page_response.g.dart
index 52e4c40..e60b15d 100644
--- a/lib/api/marianumconnect/queries/get_ticker_page/get_ticker_page_response.g.dart
+++ b/lib/api/marianumconnect/queries/get_ticker_page/get_ticker_page_response.g.dart
@@ -7,22 +7,31 @@ part of 'get_ticker_page_response.dart';
 // **************************************************************************
 
 TickerPageResponse _$TickerPageResponseFromJson(Map<String, dynamic> json) =>
-    TickerPageResponse(
-      schemaVersion: (json['schemaVersion'] as num?)?.toInt() ?? 1,
-      slug: json['slug'] as String?,
-      title: json['title'] as String?,
-      kind: json['kind'] as String? ?? 'CONTENT',
-      content: json['content'] as Map<String, dynamic>?,
-      externalUrl: json['externalUrl'] as String?,
-      externalUrlNewTab: json['externalUrlNewTab'] as bool?,
-      fileUrl: json['fileUrl'] as String?,
-      contentType: json['contentType'] as String?,
-      filename: json['filename'] as String?,
-      hash: json['hash'] as String?,
-      webUrl: json['webUrl'] as String?,
-      publishedAt: json['publishedAt'] as String?,
-      fileFetchedAt: json['fileFetchedAt'] as String?,
-    );
+    $checkedCreate('TickerPageResponse', json, ($checkedConvert) {
+      final val = TickerPageResponse(
+        schemaVersion: $checkedConvert(
+          'schemaVersion',
+          (v) => (v as num?)?.toInt() ?? 1,
+        ),
+        slug: $checkedConvert('slug', (v) => v as String?),
+        title: $checkedConvert('title', (v) => v as String?),
+        kind: $checkedConvert('kind', (v) => v as String? ?? 'CONTENT'),
+        content: $checkedConvert('content', (v) => v as Map<String, dynamic>?),
+        externalUrl: $checkedConvert('externalUrl', (v) => v as String?),
+        externalUrlNewTab: $checkedConvert(
+          'externalUrlNewTab',
+          (v) => v as bool?,
+        ),
+        fileUrl: $checkedConvert('fileUrl', (v) => v as String?),
+        contentType: $checkedConvert('contentType', (v) => v as String?),
+        filename: $checkedConvert('filename', (v) => v as String?),
+        hash: $checkedConvert('hash', (v) => v as String?),
+        webUrl: $checkedConvert('webUrl', (v) => v as String?),
+        publishedAt: $checkedConvert('publishedAt', (v) => v as String?),
+        fileFetchedAt: $checkedConvert('fileFetchedAt', (v) => v as String?),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$TickerPageResponseToJson(TickerPageResponse instance) =>
     <String, dynamic>{
diff --git a/lib/api/marianumconnect/queries/report_client_error/client_error_reporter.dart b/lib/api/marianumconnect/queries/report_client_error/client_error_reporter.dart
index 45bc93d..55f458f 100644
--- a/lib/api/marianumconnect/queries/report_client_error/client_error_reporter.dart
+++ b/lib/api/marianumconnect/queries/report_client_error/client_error_reporter.dart
@@ -36,6 +36,15 @@ class ClientErrorReporter {
     );
   }
 
+  /// Server entries the decoder could not map (see `decodeListLenient`): the
+  /// app keeps working without them, the report says which field drifted.
+  static void reportDecodeWarnings(String context, Iterable<String> warnings) {
+    for (final warning in warnings) {
+      log('$context: skipped entry: $warning');
+      _report(errorType: 'decode', message: warning, context: context);
+    }
+  }
+
   static void _report({
     required String errorType,
     required String message,
diff --git a/lib/api/marianumconnect/queries/timetable_get_classes/timetable_get_classes_response.g.dart b/lib/api/marianumconnect/queries/timetable_get_classes/timetable_get_classes_response.g.dart
index 86f23c2..0a0c045 100644
--- a/lib/api/marianumconnect/queries/timetable_get_classes/timetable_get_classes_response.g.dart
+++ b/lib/api/marianumconnect/queries/timetable_get_classes/timetable_get_classes_response.g.dart
@@ -7,11 +7,14 @@ part of 'timetable_get_classes_response.dart';
 // **************************************************************************
 
 McTimetableClass _$McTimetableClassFromJson(Map<String, dynamic> json) =>
-    McTimetableClass(
-      id: (json['id'] as num).toInt(),
-      shortName: json['shortName'] as String,
-      longName: json['longName'] as String,
-    );
+    $checkedCreate('McTimetableClass', json, ($checkedConvert) {
+      final val = McTimetableClass(
+        id: $checkedConvert('id', (v) => (v as num).toInt()),
+        shortName: $checkedConvert('shortName', (v) => v as String),
+        longName: $checkedConvert('longName', (v) => v as String),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$McTimetableClassToJson(McTimetableClass instance) =>
     <String, dynamic>{
@@ -22,15 +25,23 @@ Map<String, dynamic> _$McTimetableClassToJson(McTimetableClass instance) =>
 
 TimetableGetClassesResponse _$TimetableGetClassesResponseFromJson(
   Map<String, dynamic> json,
-) =>
-    TimetableGetClassesResponse(
-        result: (json['result'] as List<dynamic>)
-            .map((e) => McTimetableClass.fromJson(e as Map<String, dynamic>))
-            .toList(),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
-      );
+) => $checkedCreate('TimetableGetClassesResponse', json, ($checkedConvert) {
+  final val = TimetableGetClassesResponse(
+    result: $checkedConvert(
+      'result',
+      (v) => (v as List<dynamic>)
+          .map((e) => McTimetableClass.fromJson(e as Map<String, dynamic>))
+          .toList(),
+    ),
+  );
+  $checkedConvert(
+    'headers',
+    (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+      (k, e) => MapEntry(k, e as String),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$TimetableGetClassesResponseToJson(
   TimetableGetClassesResponse instance,
diff --git a/lib/api/marianumconnect/queries/timetable_get_holidays/timetable_get_holidays_response.g.dart b/lib/api/marianumconnect/queries/timetable_get_holidays/timetable_get_holidays_response.g.dart
index 6d094a4..a2c3085 100644
--- a/lib/api/marianumconnect/queries/timetable_get_holidays/timetable_get_holidays_response.g.dart
+++ b/lib/api/marianumconnect/queries/timetable_get_holidays/timetable_get_holidays_response.g.dart
@@ -8,15 +8,23 @@ part of 'timetable_get_holidays_response.dart';
 
 TimetableGetHolidaysResponse _$TimetableGetHolidaysResponseFromJson(
   Map<String, dynamic> json,
-) =>
-    TimetableGetHolidaysResponse(
-        result: (json['result'] as List<dynamic>)
-            .map((e) => McHoliday.fromJson(e as Map<String, dynamic>))
-            .toList(),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
-      );
+) => $checkedCreate('TimetableGetHolidaysResponse', json, ($checkedConvert) {
+  final val = TimetableGetHolidaysResponse(
+    result: $checkedConvert(
+      'result',
+      (v) => (v as List<dynamic>)
+          .map((e) => McHoliday.fromJson(e as Map<String, dynamic>))
+          .toList(),
+    ),
+  );
+  $checkedConvert(
+    'headers',
+    (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+      (k, e) => MapEntry(k, e as String),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$TimetableGetHolidaysResponseToJson(
   TimetableGetHolidaysResponse instance,
diff --git a/lib/api/marianumconnect/queries/timetable_get_rooms/timetable_get_rooms_response.g.dart b/lib/api/marianumconnect/queries/timetable_get_rooms/timetable_get_rooms_response.g.dart
index 3c0de3c..1026409 100644
--- a/lib/api/marianumconnect/queries/timetable_get_rooms/timetable_get_rooms_response.g.dart
+++ b/lib/api/marianumconnect/queries/timetable_get_rooms/timetable_get_rooms_response.g.dart
@@ -6,11 +6,15 @@ part of 'timetable_get_rooms_response.dart';
 // JsonSerializableGenerator
 // **************************************************************************
 
-McRoom _$McRoomFromJson(Map<String, dynamic> json) => McRoom(
-  id: (json['id'] as num).toInt(),
-  shortName: json['shortName'] as String,
-  longName: json['longName'] as String,
-);
+McRoom _$McRoomFromJson(Map<String, dynamic> json) =>
+    $checkedCreate('McRoom', json, ($checkedConvert) {
+      final val = McRoom(
+        id: $checkedConvert('id', (v) => (v as num).toInt()),
+        shortName: $checkedConvert('shortName', (v) => v as String),
+        longName: $checkedConvert('longName', (v) => v as String),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$McRoomToJson(McRoom instance) => <String, dynamic>{
   'id': instance.id,
@@ -20,15 +24,23 @@ Map<String, dynamic> _$McRoomToJson(McRoom instance) => <String, dynamic>{
 
 TimetableGetRoomsResponse _$TimetableGetRoomsResponseFromJson(
   Map<String, dynamic> json,
-) =>
-    TimetableGetRoomsResponse(
-        result: (json['result'] as List<dynamic>)
-            .map((e) => McRoom.fromJson(e as Map<String, dynamic>))
-            .toList(),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
-      );
+) => $checkedCreate('TimetableGetRoomsResponse', json, ($checkedConvert) {
+  final val = TimetableGetRoomsResponse(
+    result: $checkedConvert(
+      'result',
+      (v) => (v as List<dynamic>)
+          .map((e) => McRoom.fromJson(e as Map<String, dynamic>))
+          .toList(),
+    ),
+  );
+  $checkedConvert(
+    'headers',
+    (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+      (k, e) => MapEntry(k, e as String),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$TimetableGetRoomsResponseToJson(
   TimetableGetRoomsResponse instance,
diff --git a/lib/api/marianumconnect/queries/timetable_get_schoolyear/timetable_get_schoolyear_response.g.dart b/lib/api/marianumconnect/queries/timetable_get_schoolyear/timetable_get_schoolyear_response.g.dart
index 4046682..cb2137a 100644
--- a/lib/api/marianumconnect/queries/timetable_get_schoolyear/timetable_get_schoolyear_response.g.dart
+++ b/lib/api/marianumconnect/queries/timetable_get_schoolyear/timetable_get_schoolyear_response.g.dart
@@ -8,20 +8,27 @@ part of 'timetable_get_schoolyear_response.dart';
 
 TimetableGetSchoolyearResponse _$TimetableGetSchoolyearResponseFromJson(
   Map<String, dynamic> json,
-) =>
-    TimetableGetSchoolyearResponse(
-        id: (json['id'] as num).toInt(),
-        name: json['name'] as String,
-        startDate: TimetableGetSchoolyearResponse._dateFromJson(
-          json['startDate'] as String,
-        ),
-        endDate: TimetableGetSchoolyearResponse._dateFromJson(
-          json['endDate'] as String,
-        ),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
-      );
+) => $checkedCreate('TimetableGetSchoolyearResponse', json, ($checkedConvert) {
+  final val = TimetableGetSchoolyearResponse(
+    id: $checkedConvert('id', (v) => (v as num).toInt()),
+    name: $checkedConvert('name', (v) => v as String),
+    startDate: $checkedConvert(
+      'startDate',
+      (v) => TimetableGetSchoolyearResponse._dateFromJson(v as String),
+    ),
+    endDate: $checkedConvert(
+      'endDate',
+      (v) => TimetableGetSchoolyearResponse._dateFromJson(v as String),
+    ),
+  );
+  $checkedConvert(
+    'headers',
+    (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+      (k, e) => MapEntry(k, e as String),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$TimetableGetSchoolyearResponseToJson(
   TimetableGetSchoolyearResponse instance,
diff --git a/lib/api/marianumconnect/queries/timetable_get_students/timetable_get_students_response.g.dart b/lib/api/marianumconnect/queries/timetable_get_students/timetable_get_students_response.g.dart
index 8588de3..b28d30c 100644
--- a/lib/api/marianumconnect/queries/timetable_get_students/timetable_get_students_response.g.dart
+++ b/lib/api/marianumconnect/queries/timetable_get_students/timetable_get_students_response.g.dart
@@ -7,12 +7,15 @@ part of 'timetable_get_students_response.dart';
 // **************************************************************************
 
 McTimetableStudent _$McTimetableStudentFromJson(Map<String, dynamic> json) =>
-    McTimetableStudent(
-      id: (json['id'] as num).toInt(),
-      firstName: json['firstName'] as String,
-      lastName: json['lastName'] as String,
-      displayName: json['displayName'] as String,
-    );
+    $checkedCreate('McTimetableStudent', json, ($checkedConvert) {
+      final val = McTimetableStudent(
+        id: $checkedConvert('id', (v) => (v as num).toInt()),
+        firstName: $checkedConvert('firstName', (v) => v as String),
+        lastName: $checkedConvert('lastName', (v) => v as String),
+        displayName: $checkedConvert('displayName', (v) => v as String),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$McTimetableStudentToJson(McTimetableStudent instance) =>
     <String, dynamic>{
@@ -24,15 +27,23 @@ Map<String, dynamic> _$McTimetableStudentToJson(McTimetableStudent instance) =>
 
 TimetableGetStudentsResponse _$TimetableGetStudentsResponseFromJson(
   Map<String, dynamic> json,
-) =>
-    TimetableGetStudentsResponse(
-        result: (json['result'] as List<dynamic>)
-            .map((e) => McTimetableStudent.fromJson(e as Map<String, dynamic>))
-            .toList(),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
-      );
+) => $checkedCreate('TimetableGetStudentsResponse', json, ($checkedConvert) {
+  final val = TimetableGetStudentsResponse(
+    result: $checkedConvert(
+      'result',
+      (v) => (v as List<dynamic>)
+          .map((e) => McTimetableStudent.fromJson(e as Map<String, dynamic>))
+          .toList(),
+    ),
+  );
+  $checkedConvert(
+    'headers',
+    (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+      (k, e) => MapEntry(k, e as String),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$TimetableGetStudentsResponseToJson(
   TimetableGetStudentsResponse instance,
diff --git a/lib/api/marianumconnect/queries/timetable_get_subjects/timetable_get_subjects_response.g.dart b/lib/api/marianumconnect/queries/timetable_get_subjects/timetable_get_subjects_response.g.dart
index d7672af..635c1ba 100644
--- a/lib/api/marianumconnect/queries/timetable_get_subjects/timetable_get_subjects_response.g.dart
+++ b/lib/api/marianumconnect/queries/timetable_get_subjects/timetable_get_subjects_response.g.dart
@@ -6,12 +6,16 @@ part of 'timetable_get_subjects_response.dart';
 // JsonSerializableGenerator
 // **************************************************************************
 
-McSubject _$McSubjectFromJson(Map<String, dynamic> json) => McSubject(
-  id: (json['id'] as num).toInt(),
-  shortName: json['shortName'] as String,
-  longName: json['longName'] as String,
-  color: json['color'] as String?,
-);
+McSubject _$McSubjectFromJson(Map<String, dynamic> json) =>
+    $checkedCreate('McSubject', json, ($checkedConvert) {
+      final val = McSubject(
+        id: $checkedConvert('id', (v) => (v as num).toInt()),
+        shortName: $checkedConvert('shortName', (v) => v as String),
+        longName: $checkedConvert('longName', (v) => v as String),
+        color: $checkedConvert('color', (v) => v as String?),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$McSubjectToJson(McSubject instance) => <String, dynamic>{
   'id': instance.id,
@@ -22,15 +26,23 @@ Map<String, dynamic> _$McSubjectToJson(McSubject instance) => <String, dynamic>{
 
 TimetableGetSubjectsResponse _$TimetableGetSubjectsResponseFromJson(
   Map<String, dynamic> json,
-) =>
-    TimetableGetSubjectsResponse(
-        result: (json['result'] as List<dynamic>)
-            .map((e) => McSubject.fromJson(e as Map<String, dynamic>))
-            .toList(),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
-      );
+) => $checkedCreate('TimetableGetSubjectsResponse', json, ($checkedConvert) {
+  final val = TimetableGetSubjectsResponse(
+    result: $checkedConvert(
+      'result',
+      (v) => (v as List<dynamic>)
+          .map((e) => McSubject.fromJson(e as Map<String, dynamic>))
+          .toList(),
+    ),
+  );
+  $checkedConvert(
+    'headers',
+    (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+      (k, e) => MapEntry(k, e as String),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$TimetableGetSubjectsResponseToJson(
   TimetableGetSubjectsResponse instance,
diff --git a/lib/api/marianumconnect/queries/timetable_get_teachers/timetable_get_teachers_response.g.dart b/lib/api/marianumconnect/queries/timetable_get_teachers/timetable_get_teachers_response.g.dart
index ca72e62..5fdfd36 100644
--- a/lib/api/marianumconnect/queries/timetable_get_teachers/timetable_get_teachers_response.g.dart
+++ b/lib/api/marianumconnect/queries/timetable_get_teachers/timetable_get_teachers_response.g.dart
@@ -8,11 +8,14 @@ part of 'timetable_get_teachers_response.dart';
 
 McTimetableTeacherElement _$McTimetableTeacherElementFromJson(
   Map<String, dynamic> json,
-) => McTimetableTeacherElement(
-  id: (json['id'] as num).toInt(),
-  shortName: json['shortName'] as String,
-  displayName: json['displayName'] as String,
-);
+) => $checkedCreate('McTimetableTeacherElement', json, ($checkedConvert) {
+  final val = McTimetableTeacherElement(
+    id: $checkedConvert('id', (v) => (v as num).toInt()),
+    shortName: $checkedConvert('shortName', (v) => v as String),
+    displayName: $checkedConvert('displayName', (v) => v as String),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$McTimetableTeacherElementToJson(
   McTimetableTeacherElement instance,
@@ -24,18 +27,26 @@ Map<String, dynamic> _$McTimetableTeacherElementToJson(
 
 TimetableGetTeachersResponse _$TimetableGetTeachersResponseFromJson(
   Map<String, dynamic> json,
-) =>
-    TimetableGetTeachersResponse(
-        result: (json['result'] as List<dynamic>)
-            .map(
-              (e) =>
-                  McTimetableTeacherElement.fromJson(e as Map<String, dynamic>),
-            )
-            .toList(),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
-      );
+) => $checkedCreate('TimetableGetTeachersResponse', json, ($checkedConvert) {
+  final val = TimetableGetTeachersResponse(
+    result: $checkedConvert(
+      'result',
+      (v) => (v as List<dynamic>)
+          .map(
+            (e) =>
+                McTimetableTeacherElement.fromJson(e as Map<String, dynamic>),
+          )
+          .toList(),
+    ),
+  );
+  $checkedConvert(
+    'headers',
+    (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+      (k, e) => MapEntry(k, e as String),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$TimetableGetTeachersResponseToJson(
   TimetableGetTeachersResponse instance,
diff --git a/lib/api/marianumconnect/queries/timetable_get_timegrid/timetable_get_timegrid_response.g.dart b/lib/api/marianumconnect/queries/timetable_get_timegrid/timetable_get_timegrid_response.g.dart
index ff96032..a22695c 100644
--- a/lib/api/marianumconnect/queries/timetable_get_timegrid/timetable_get_timegrid_response.g.dart
+++ b/lib/api/marianumconnect/queries/timetable_get_timegrid/timetable_get_timegrid_response.g.dart
@@ -7,12 +7,24 @@ part of 'timetable_get_timegrid_response.dart';
 // **************************************************************************
 
 McTimegridUnit _$McTimegridUnitFromJson(Map<String, dynamic> json) =>
-    McTimegridUnit(
-      dayOfWeek: _dayFromJson(json['dayOfWeek'] as String),
-      label: json['label'] as String,
-      startTime: McTimegridUnit._timeFromJson(json['startTime'] as String),
-      endTime: McTimegridUnit._timeFromJson(json['endTime'] as String),
-    );
+    $checkedCreate('McTimegridUnit', json, ($checkedConvert) {
+      final val = McTimegridUnit(
+        dayOfWeek: $checkedConvert(
+          'dayOfWeek',
+          (v) => _dayFromJson(v as String),
+        ),
+        label: $checkedConvert('label', (v) => v as String),
+        startTime: $checkedConvert(
+          'startTime',
+          (v) => McTimegridUnit._timeFromJson(v as String),
+        ),
+        endTime: $checkedConvert(
+          'endTime',
+          (v) => McTimegridUnit._timeFromJson(v as String),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$McTimegridUnitToJson(McTimegridUnit instance) =>
     <String, dynamic>{
@@ -24,15 +36,23 @@ Map<String, dynamic> _$McTimegridUnitToJson(McTimegridUnit instance) =>
 
 TimetableGetTimegridResponse _$TimetableGetTimegridResponseFromJson(
   Map<String, dynamic> json,
-) =>
-    TimetableGetTimegridResponse(
-        result: (json['result'] as List<dynamic>)
-            .map((e) => McTimegridUnit.fromJson(e as Map<String, dynamic>))
-            .toList(),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
-      );
+) => $checkedCreate('TimetableGetTimegridResponse', json, ($checkedConvert) {
+  final val = TimetableGetTimegridResponse(
+    result: $checkedConvert(
+      'result',
+      (v) => (v as List<dynamic>)
+          .map((e) => McTimegridUnit.fromJson(e as Map<String, dynamic>))
+          .toList(),
+    ),
+  );
+  $checkedConvert(
+    'headers',
+    (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+      (k, e) => MapEntry(k, e as String),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$TimetableGetTimegridResponseToJson(
   TimetableGetTimegridResponse instance,
diff --git a/lib/api/marianumconnect/queries/timetable_get_week/timetable_get_week_response.g.dart b/lib/api/marianumconnect/queries/timetable_get_week/timetable_get_week_response.g.dart
index d32bd40..650a5d5 100644
--- a/lib/api/marianumconnect/queries/timetable_get_week/timetable_get_week_response.g.dart
+++ b/lib/api/marianumconnect/queries/timetable_get_week/timetable_get_week_response.g.dart
@@ -7,14 +7,23 @@ part of 'timetable_get_week_response.dart';
 // **************************************************************************
 
 McTimetableTeacher _$McTimetableTeacherFromJson(Map<String, dynamic> json) =>
-    McTimetableTeacher(
-      shortName: json['shortName'] as String,
-      displayName: json['displayName'] as String,
-      originalShortName: json['originalShortName'] as String?,
-      originalDisplayName: json['originalDisplayName'] as String?,
-      id: (json['id'] as num?)?.toInt(),
-      originalId: (json['originalId'] as num?)?.toInt(),
-    );
+    $checkedCreate('McTimetableTeacher', json, ($checkedConvert) {
+      final val = McTimetableTeacher(
+        shortName: $checkedConvert('shortName', (v) => v as String),
+        displayName: $checkedConvert('displayName', (v) => v as String),
+        originalShortName: $checkedConvert(
+          'originalShortName',
+          (v) => v as String?,
+        ),
+        originalDisplayName: $checkedConvert(
+          'originalDisplayName',
+          (v) => v as String?,
+        ),
+        id: $checkedConvert('id', (v) => (v as num?)?.toInt()),
+        originalId: $checkedConvert('originalId', (v) => (v as num?)?.toInt()),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$McTimetableTeacherToJson(McTimetableTeacher instance) =>
     <String, dynamic>{
@@ -26,31 +35,53 @@ Map<String, dynamic> _$McTimetableTeacherToJson(McTimetableTeacher instance) =>
       'originalId': instance.originalId,
     };
 
-McTimetableEntry _$McTimetableEntryFromJson(Map<String, dynamic> json) =>
-    McTimetableEntry(
-      id: (json['id'] as num).toInt(),
-      date: McTimetableEntry._dateFromJson(json['date'] as String),
-      startTime: McTimetableEntry._timeFromJson(json['startTime'] as String),
-      endTime: McTimetableEntry._timeFromJson(json['endTime'] as String),
-      subjects: (json['subjects'] as List<dynamic>)
-          .map((e) => e as String)
-          .toList(),
-      teachers: (json['teachers'] as List<dynamic>)
+McTimetableEntry _$McTimetableEntryFromJson(
+  Map<String, dynamic> json,
+) => $checkedCreate('McTimetableEntry', json, ($checkedConvert) {
+  final val = McTimetableEntry(
+    id: $checkedConvert('id', (v) => (v as num).toInt()),
+    date: $checkedConvert(
+      'date',
+      (v) => McTimetableEntry._dateFromJson(v as String),
+    ),
+    startTime: $checkedConvert(
+      'startTime',
+      (v) => McTimetableEntry._timeFromJson(v as String),
+    ),
+    endTime: $checkedConvert(
+      'endTime',
+      (v) => McTimetableEntry._timeFromJson(v as String),
+    ),
+    subjects: $checkedConvert(
+      'subjects',
+      (v) => (v as List<dynamic>).map((e) => e as String).toList(),
+    ),
+    teachers: $checkedConvert(
+      'teachers',
+      (v) => (v as List<dynamic>)
           .map((e) => McTimetableTeacher.fromJson(e as Map<String, dynamic>))
           .toList(),
-      rooms: (json['rooms'] as List<dynamic>).map((e) => e as String).toList(),
-      classNames: (json['classNames'] as List<dynamic>)
-          .map((e) => e as String)
-          .toList(),
-      lessonType: json['lessonType'] as String,
-      status: json['status'] as String,
-      substitutionText: json['substitutionText'] as String?,
-      lessonText: json['lessonText'] as String?,
-      infoText: json['infoText'] as String?,
-      classIds: (json['classIds'] as List<dynamic>?)
-          ?.map((e) => (e as num).toInt())
-          .toList(),
-    );
+    ),
+    rooms: $checkedConvert(
+      'rooms',
+      (v) => (v as List<dynamic>).map((e) => e as String).toList(),
+    ),
+    classNames: $checkedConvert(
+      'classNames',
+      (v) => (v as List<dynamic>).map((e) => e as String).toList(),
+    ),
+    lessonType: $checkedConvert('lessonType', (v) => v as String),
+    status: $checkedConvert('status', (v) => v as String),
+    substitutionText: $checkedConvert('substitutionText', (v) => v as String?),
+    lessonText: $checkedConvert('lessonText', (v) => v as String?),
+    infoText: $checkedConvert('infoText', (v) => v as String?),
+    classIds: $checkedConvert(
+      'classIds',
+      (v) => (v as List<dynamic>?)?.map((e) => (e as num).toInt()).toList(),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$McTimetableEntryToJson(McTimetableEntry instance) =>
     <String, dynamic>{
@@ -72,17 +103,31 @@ Map<String, dynamic> _$McTimetableEntryToJson(McTimetableEntry instance) =>
 
 TimetableGetWeekResponse _$TimetableGetWeekResponseFromJson(
   Map<String, dynamic> json,
-) =>
-    TimetableGetWeekResponse(
-        from: McTimetableEntry._dateFromJson(json['from'] as String),
-        until: McTimetableEntry._dateFromJson(json['until'] as String),
-        entries: (json['entries'] as List<dynamic>)
-            .map((e) => McTimetableEntry.fromJson(e as Map<String, dynamic>))
-            .toList(),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
-      );
+) => $checkedCreate('TimetableGetWeekResponse', json, ($checkedConvert) {
+  final val = TimetableGetWeekResponse(
+    from: $checkedConvert(
+      'from',
+      (v) => McTimetableEntry._dateFromJson(v as String),
+    ),
+    until: $checkedConvert(
+      'until',
+      (v) => McTimetableEntry._dateFromJson(v as String),
+    ),
+    entries: $checkedConvert(
+      'entries',
+      (v) => (v as List<dynamic>)
+          .map((e) => McTimetableEntry.fromJson(e as Map<String, dynamic>))
+          .toList(),
+    ),
+  );
+  $checkedConvert(
+    'headers',
+    (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+      (k, e) => MapEntry(k, e as String),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$TimetableGetWeekResponseToJson(
   TimetableGetWeekResponse instance,
diff --git a/lib/api/marianumconnect/queries/user_search/user_search_response.g.dart b/lib/api/marianumconnect/queries/user_search/user_search_response.g.dart
index d9f7e46..d12a916 100644
--- a/lib/api/marianumconnect/queries/user_search/user_search_response.g.dart
+++ b/lib/api/marianumconnect/queries/user_search/user_search_response.g.dart
@@ -7,13 +7,16 @@ part of 'user_search_response.dart';
 // **************************************************************************
 
 McUserSearchResult _$McUserSearchResultFromJson(Map<String, dynamic> json) =>
-    McUserSearchResult(
-      username: json['username'] as String,
-      firstName: json['firstName'] as String,
-      lastName: json['lastName'] as String,
-      userType: json['userType'] as String,
-      className: json['className'] as String?,
-    );
+    $checkedCreate('McUserSearchResult', json, ($checkedConvert) {
+      final val = McUserSearchResult(
+        username: $checkedConvert('username', (v) => v as String),
+        firstName: $checkedConvert('firstName', (v) => v as String),
+        lastName: $checkedConvert('lastName', (v) => v as String),
+        userType: $checkedConvert('userType', (v) => v as String),
+        className: $checkedConvert('className', (v) => v as String?),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$McUserSearchResultToJson(McUserSearchResult instance) =>
     <String, dynamic>{
@@ -25,14 +28,25 @@ Map<String, dynamic> _$McUserSearchResultToJson(McUserSearchResult instance) =>
     };
 
 UserSearchResponse _$UserSearchResponseFromJson(Map<String, dynamic> json) =>
-    UserSearchResponse(
-        result: (json['result'] as List<dynamic>)
-            .map((e) => McUserSearchResult.fromJson(e as Map<String, dynamic>))
-            .toList(),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
+    $checkedCreate('UserSearchResponse', json, ($checkedConvert) {
+      final val = UserSearchResponse(
+        result: $checkedConvert(
+          'result',
+          (v) => (v as List<dynamic>)
+              .map(
+                (e) => McUserSearchResult.fromJson(e as Map<String, dynamic>),
+              )
+              .toList(),
+        ),
       );
+      $checkedConvert(
+        'headers',
+        (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+          (k, e) => MapEntry(k, e as String),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$UserSearchResponseToJson(UserSearchResponse instance) =>
     <String, dynamic>{
diff --git a/lib/api/mhsl/custom_timetable_event/custom_timetable_event.g.dart b/lib/api/mhsl/custom_timetable_event/custom_timetable_event.g.dart
index bb4fffa..af4d87a 100644
--- a/lib/api/mhsl/custom_timetable_event/custom_timetable_event.g.dart
+++ b/lib/api/mhsl/custom_timetable_event/custom_timetable_event.g.dart
@@ -8,18 +8,33 @@ part of 'custom_timetable_event.dart';
 
 CustomTimetableEvent _$CustomTimetableEventFromJson(
   Map<String, dynamic> json,
-) => CustomTimetableEvent(
-  id: json['id'] as String,
-  title: json['title'] as String,
-  description: json['description'] as String,
-  startDate: CustomTimetableEvent._dateFromJson(json['startDate'] as String),
-  endDate: CustomTimetableEvent._dateFromJson(json['endDate'] as String),
-  color: json['color'] as String?,
-  rrule: json['rrule'] as String,
-  skipHolidays: json['skipHolidays'] as bool? ?? false,
-  createdAt: CustomTimetableEvent._dateFromJson(json['createdAt'] as String),
-  updatedAt: CustomTimetableEvent._dateFromJson(json['updatedAt'] as String),
-);
+) => $checkedCreate('CustomTimetableEvent', json, ($checkedConvert) {
+  final val = CustomTimetableEvent(
+    id: $checkedConvert('id', (v) => v as String),
+    title: $checkedConvert('title', (v) => v as String),
+    description: $checkedConvert('description', (v) => v as String),
+    startDate: $checkedConvert(
+      'startDate',
+      (v) => CustomTimetableEvent._dateFromJson(v as String),
+    ),
+    endDate: $checkedConvert(
+      'endDate',
+      (v) => CustomTimetableEvent._dateFromJson(v as String),
+    ),
+    color: $checkedConvert('color', (v) => v as String?),
+    rrule: $checkedConvert('rrule', (v) => v as String),
+    skipHolidays: $checkedConvert('skipHolidays', (v) => v as bool? ?? false),
+    createdAt: $checkedConvert(
+      'createdAt',
+      (v) => CustomTimetableEvent._dateFromJson(v as String),
+    ),
+    updatedAt: $checkedConvert(
+      'updatedAt',
+      (v) => CustomTimetableEvent._dateFromJson(v as String),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$CustomTimetableEventToJson(
   CustomTimetableEvent instance,
diff --git a/lib/api/mhsl/custom_timetable_event/get/get_custom_timetable_event_params.g.dart b/lib/api/mhsl/custom_timetable_event/get/get_custom_timetable_event_params.g.dart
index 01fc5a5..e19648d 100644
--- a/lib/api/mhsl/custom_timetable_event/get/get_custom_timetable_event_params.g.dart
+++ b/lib/api/mhsl/custom_timetable_event/get/get_custom_timetable_event_params.g.dart
@@ -8,7 +8,12 @@ part of 'get_custom_timetable_event_params.dart';
 
 GetCustomTimetableEventParams _$GetCustomTimetableEventParamsFromJson(
   Map<String, dynamic> json,
-) => GetCustomTimetableEventParams(json['user'] as String);
+) => $checkedCreate('GetCustomTimetableEventParams', json, ($checkedConvert) {
+  final val = GetCustomTimetableEventParams(
+    $checkedConvert('user', (v) => v as String),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$GetCustomTimetableEventParamsToJson(
   GetCustomTimetableEventParams instance,
diff --git a/lib/api/mhsl/custom_timetable_event/get/get_custom_timetable_event_response.g.dart b/lib/api/mhsl/custom_timetable_event/get/get_custom_timetable_event_response.g.dart
index 5bed445..3f7e510 100644
--- a/lib/api/mhsl/custom_timetable_event/get/get_custom_timetable_event_response.g.dart
+++ b/lib/api/mhsl/custom_timetable_event/get/get_custom_timetable_event_response.g.dart
@@ -8,17 +8,23 @@ part of 'get_custom_timetable_event_response.dart';
 
 GetCustomTimetableEventResponse _$GetCustomTimetableEventResponseFromJson(
   Map<String, dynamic> json,
-) =>
-    GetCustomTimetableEventResponse(
-        (json['events'] as List<dynamic>)
-            .map(
-              (e) => CustomTimetableEvent.fromJson(e as Map<String, dynamic>),
-            )
-            .toList(),
-      )
-      ..headers = (json['headers'] as Map<String, dynamic>?)?.map(
-        (k, e) => MapEntry(k, e as String),
-      );
+) => $checkedCreate('GetCustomTimetableEventResponse', json, ($checkedConvert) {
+  final val = GetCustomTimetableEventResponse(
+    $checkedConvert(
+      'events',
+      (v) => (v as List<dynamic>)
+          .map((e) => CustomTimetableEvent.fromJson(e as Map<String, dynamic>))
+          .toList(),
+    ),
+  );
+  $checkedConvert(
+    'headers',
+    (v) => val.headers = (v as Map<String, dynamic>?)?.map(
+      (k, e) => MapEntry(k, e as String),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$GetCustomTimetableEventResponseToJson(
   GetCustomTimetableEventResponse instance,
diff --git a/lib/api/mhsl/custom_timetable_event/remove/remove_custom_timetable_event_params.g.dart b/lib/api/mhsl/custom_timetable_event/remove/remove_custom_timetable_event_params.g.dart
index 4e85a31..d26aa24 100644
--- a/lib/api/mhsl/custom_timetable_event/remove/remove_custom_timetable_event_params.g.dart
+++ b/lib/api/mhsl/custom_timetable_event/remove/remove_custom_timetable_event_params.g.dart
@@ -8,7 +8,13 @@ part of 'remove_custom_timetable_event_params.dart';
 
 RemoveCustomTimetableEventParams _$RemoveCustomTimetableEventParamsFromJson(
   Map<String, dynamic> json,
-) => RemoveCustomTimetableEventParams(json['id'] as String);
+) =>
+    $checkedCreate('RemoveCustomTimetableEventParams', json, ($checkedConvert) {
+      final val = RemoveCustomTimetableEventParams(
+        $checkedConvert('id', (v) => v as String),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$RemoveCustomTimetableEventParamsToJson(
   RemoveCustomTimetableEventParams instance,
diff --git a/lib/routing/app_routes.dart b/lib/routing/app_routes.dart
index aa9ddb6..499d91b 100644
--- a/lib/routing/app_routes.dart
+++ b/lib/routing/app_routes.dart
@@ -407,7 +407,7 @@ class AppRoutes {
     // would race the fresh one and could regress the server cursor.
     context.read<ChatListBloc>().markRoomAsRead(
       room.token,
-      room.lastMessage.id,
+      room.lastMessage?.id ?? room.lastReadMessage,
     );
     NotificationTasks.clearNotificationsForChat(room.token);
     TalkNavigator.pushSplitView(
diff --git a/lib/state/app/infrastructure/utility_widgets/loadable_hydrated_bloc/loadable_save_context.g.dart b/lib/state/app/infrastructure/utility_widgets/loadable_hydrated_bloc/loadable_save_context.g.dart
index 99c92e8..cb6574e 100644
--- a/lib/state/app/infrastructure/utility_widgets/loadable_hydrated_bloc/loadable_save_context.g.dart
+++ b/lib/state/app/infrastructure/utility_widgets/loadable_hydrated_bloc/loadable_save_context.g.dart
@@ -7,7 +7,12 @@ part of 'loadable_save_context.dart';
 // **************************************************************************
 
 _LoadableSaveContext _$LoadableSaveContextFromJson(Map<String, dynamic> json) =>
-    _LoadableSaveContext(timestamp: (json['timestamp'] as num).toInt());
+    $checkedCreate('_LoadableSaveContext', json, ($checkedConvert) {
+      final val = _LoadableSaveContext(
+        timestamp: $checkedConvert('timestamp', (v) => (v as num).toInt()),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$LoadableSaveContextToJson(
   _LoadableSaveContext instance,
diff --git a/lib/state/app/modules/breaker/bloc/breaker_state.g.dart b/lib/state/app/modules/breaker/bloc/breaker_state.g.dart
index d47f3e3..7079f7d 100644
--- a/lib/state/app/modules/breaker/bloc/breaker_state.g.dart
+++ b/lib/state/app/modules/breaker/bloc/breaker_state.g.dart
@@ -7,13 +7,17 @@ part of 'breaker_state.dart';
 // **************************************************************************
 
 _BreakerState _$BreakerStateFromJson(Map<String, dynamic> json) =>
-    _BreakerState(
-      response: json['response'] == null
-          ? null
-          : GetBreakersResponse.fromJson(
-              json['response'] as Map<String, dynamic>,
-            ),
-    );
+    $checkedCreate('_BreakerState', json, ($checkedConvert) {
+      final val = _BreakerState(
+        response: $checkedConvert(
+          'response',
+          (v) => v == null
+              ? null
+              : GetBreakersResponse.fromJson(v as Map<String, dynamic>),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$BreakerStateToJson(_BreakerState instance) =>
     <String, dynamic>{'response': instance.response};
diff --git a/lib/state/app/modules/capabilities/bloc/capabilities_state.g.dart b/lib/state/app/modules/capabilities/bloc/capabilities_state.g.dart
index c50fed3..420dda3 100644
--- a/lib/state/app/modules/capabilities/bloc/capabilities_state.g.dart
+++ b/lib/state/app/modules/capabilities/bloc/capabilities_state.g.dart
@@ -7,14 +7,29 @@ part of 'capabilities_state.dart';
 // **************************************************************************
 
 _CapabilitiesState _$CapabilitiesStateFromJson(Map<String, dynamic> json) =>
-    _CapabilitiesState(
-      viewForeignTimetables: json['viewForeignTimetables'] as bool? ?? false,
-      pushNotifications: json['pushNotifications'] as bool? ?? false,
-      timetablePastDays: (json['timetablePastDays'] as num?)?.toInt(),
-      timetableFutureDays: (json['timetableFutureDays'] as num?)?.toInt(),
-      userType: json['userType'] as String?,
-      loaded: json['loaded'] as bool? ?? false,
-    );
+    $checkedCreate('_CapabilitiesState', json, ($checkedConvert) {
+      final val = _CapabilitiesState(
+        viewForeignTimetables: $checkedConvert(
+          'viewForeignTimetables',
+          (v) => v as bool? ?? false,
+        ),
+        pushNotifications: $checkedConvert(
+          'pushNotifications',
+          (v) => v as bool? ?? false,
+        ),
+        timetablePastDays: $checkedConvert(
+          'timetablePastDays',
+          (v) => (v as num?)?.toInt(),
+        ),
+        timetableFutureDays: $checkedConvert(
+          'timetableFutureDays',
+          (v) => (v as num?)?.toInt(),
+        ),
+        userType: $checkedConvert('userType', (v) => v as String?),
+        loaded: $checkedConvert('loaded', (v) => v as bool? ?? false),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$CapabilitiesStateToJson(_CapabilitiesState instance) =>
     <String, dynamic>{
diff --git a/lib/state/app/modules/chat/bloc/chat_bloc.dart b/lib/state/app/modules/chat/bloc/chat_bloc.dart
index 83b2bc8..e2b9a1a 100644
--- a/lib/state/app/modules/chat/bloc/chat_bloc.dart
+++ b/lib/state/app/modules/chat/bloc/chat_bloc.dart
@@ -411,6 +411,7 @@ class ChatBloc
         case GetRoomResponseObjectMessageType.deletedComment:
         case GetRoomResponseObjectMessageType.system:
         case GetRoomResponseObjectMessageType.command:
+        case GetRoomResponseObjectMessageType.unknown:
           break;
       }
     }
diff --git a/lib/state/app/modules/chat/bloc/chat_state.g.dart b/lib/state/app/modules/chat/bloc/chat_state.g.dart
index abf6a7c..c3d21c4 100644
--- a/lib/state/app/modules/chat/bloc/chat_state.g.dart
+++ b/lib/state/app/modules/chat/bloc/chat_state.g.dart
@@ -6,14 +6,30 @@ part of 'chat_state.dart';
 // JsonSerializableGenerator
 // **************************************************************************
 
-_ChatState _$ChatStateFromJson(Map<String, dynamic> json) => _ChatState(
-  currentToken: json['currentToken'] as String? ?? '',
-  chatResponse: json['chatResponse'] == null
-      ? null
-      : GetChatResponse.fromJson(json['chatResponse'] as Map<String, dynamic>),
-  referenceMessageId: (json['referenceMessageId'] as num?)?.toInt(),
-  hasMoreOld: json['hasMoreOld'] as bool? ?? true,
-  isLoadingOlder: json['isLoadingOlder'] as bool? ?? false,
+_ChatState _$ChatStateFromJson(Map<String, dynamic> json) => $checkedCreate(
+  '_ChatState',
+  json,
+  ($checkedConvert) {
+    final val = _ChatState(
+      currentToken: $checkedConvert('currentToken', (v) => v as String? ?? ''),
+      chatResponse: $checkedConvert(
+        'chatResponse',
+        (v) => v == null
+            ? null
+            : GetChatResponse.fromJson(v as Map<String, dynamic>),
+      ),
+      referenceMessageId: $checkedConvert(
+        'referenceMessageId',
+        (v) => (v as num?)?.toInt(),
+      ),
+      hasMoreOld: $checkedConvert('hasMoreOld', (v) => v as bool? ?? true),
+      isLoadingOlder: $checkedConvert(
+        'isLoadingOlder',
+        (v) => v as bool? ?? false,
+      ),
+    );
+    return val;
+  },
 );
 
 Map<String, dynamic> _$ChatStateToJson(_ChatState instance) =>
diff --git a/lib/state/app/modules/chat_list/bloc/chat_list_bloc.dart b/lib/state/app/modules/chat_list/bloc/chat_list_bloc.dart
index 54681e2..e9b475a 100644
--- a/lib/state/app/modules/chat_list/bloc/chat_list_bloc.dart
+++ b/lib/state/app/modules/chat_list/bloc/chat_list_bloc.dart
@@ -187,16 +187,18 @@ class ChatListBloc
   /// Clears unread too — long-poll only feeds this in for an actively-open chat.
   void applyIncomingMessage(String token, GetChatResponseObject message) {
     _mutateRoom(token, (r) {
-      final wasRead =
-          r.unreadMessages == 0 && r.lastReadMessage >= message.id;
-      final hasNewer = r.lastMessage.id >= message.id;
+      final wasRead = r.unreadMessages == 0 && r.lastReadMessage >= message.id;
+      final lastId = r.lastMessage?.id ?? 0;
+      final hasNewer = lastId >= message.id;
       if (wasRead && hasNewer) return false;
       r.unreadMessages = 0;
       r.unreadMention = false;
       r.unreadMentionDirect = false;
       if (message.id > r.lastReadMessage) r.lastReadMessage = message.id;
-      if (message.id > r.lastMessage.id) r.lastMessage = message;
-      if (message.timestamp > r.lastActivity) r.lastActivity = message.timestamp;
+      if (message.id > lastId) r.lastMessage = message;
+      if (message.timestamp > r.lastActivity) {
+        r.lastActivity = message.timestamp;
+      }
       return true;
     });
   }
diff --git a/lib/state/app/modules/chat_list/bloc/chat_list_state.g.dart b/lib/state/app/modules/chat_list/bloc/chat_list_state.g.dart
index 1a28f8c..1385cac 100644
--- a/lib/state/app/modules/chat_list/bloc/chat_list_state.g.dart
+++ b/lib/state/app/modules/chat_list/bloc/chat_list_state.g.dart
@@ -7,11 +7,17 @@ part of 'chat_list_state.dart';
 // **************************************************************************
 
 _ChatListState _$ChatListStateFromJson(Map<String, dynamic> json) =>
-    _ChatListState(
-      rooms: json['rooms'] == null
-          ? null
-          : GetRoomResponse.fromJson(json['rooms'] as Map<String, dynamic>),
-    );
+    $checkedCreate('_ChatListState', json, ($checkedConvert) {
+      final val = _ChatListState(
+        rooms: $checkedConvert(
+          'rooms',
+          (v) => v == null
+              ? null
+              : GetRoomResponse.fromJson(v as Map<String, dynamic>),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$ChatListStateToJson(_ChatListState instance) =>
     <String, dynamic>{'rooms': instance.rooms};
diff --git a/lib/state/app/modules/files/bloc/files_state.g.dart b/lib/state/app/modules/files/bloc/files_state.g.dart
index 7d5d345..7d355d6 100644
--- a/lib/state/app/modules/files/bloc/files_state.g.dart
+++ b/lib/state/app/modules/files/bloc/files_state.g.dart
@@ -6,16 +6,24 @@ part of 'files_state.dart';
 // JsonSerializableGenerator
 // **************************************************************************
 
-_FilesState _$FilesStateFromJson(Map<String, dynamic> json) => _FilesState(
-  currentPath:
-      (json['currentPath'] as List<dynamic>?)
-          ?.map((e) => e as String)
-          .toList() ??
-      const <String>[],
-  listing: json['listing'] == null
-      ? null
-      : ListFilesResponse.fromJson(json['listing'] as Map<String, dynamic>),
-);
+_FilesState _$FilesStateFromJson(Map<String, dynamic> json) =>
+    $checkedCreate('_FilesState', json, ($checkedConvert) {
+      final val = _FilesState(
+        currentPath: $checkedConvert(
+          'currentPath',
+          (v) =>
+              (v as List<dynamic>?)?.map((e) => e as String).toList() ??
+              const <String>[],
+        ),
+        listing: $checkedConvert(
+          'listing',
+          (v) => v == null
+              ? null
+              : ListFilesResponse.fromJson(v as Map<String, dynamic>),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$FilesStateToJson(_FilesState instance) =>
     <String, dynamic>{
diff --git a/lib/state/app/modules/grade_averages/bloc/grade_averages_state.g.dart b/lib/state/app/modules/grade_averages/bloc/grade_averages_state.g.dart
index 9373ca9..e5dab37 100644
--- a/lib/state/app/modules/grade_averages/bloc/grade_averages_state.g.dart
+++ b/lib/state/app/modules/grade_averages/bloc/grade_averages_state.g.dart
@@ -7,15 +7,19 @@ part of 'grade_averages_state.dart';
 // **************************************************************************
 
 _GradeAveragesState _$GradeAveragesStateFromJson(Map<String, dynamic> json) =>
-    _GradeAveragesState(
-      gradingSystem: $enumDecode(
-        _$GradeAveragesGradingSystemEnumMap,
-        json['gradingSystem'],
-      ),
-      grades: (json['grades'] as List<dynamic>)
-          .map((e) => (e as num).toInt())
-          .toList(),
-    );
+    $checkedCreate('_GradeAveragesState', json, ($checkedConvert) {
+      final val = _GradeAveragesState(
+        gradingSystem: $checkedConvert(
+          'gradingSystem',
+          (v) => $enumDecode(_$GradeAveragesGradingSystemEnumMap, v),
+        ),
+        grades: $checkedConvert(
+          'grades',
+          (v) => (v as List<dynamic>).map((e) => (e as num).toInt()).toList(),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$GradeAveragesStateToJson(
   _GradeAveragesState instance,
diff --git a/lib/state/app/modules/holidays/bloc/holidays_state.g.dart b/lib/state/app/modules/holidays/bloc/holidays_state.g.dart
index 4173e20..2446ef6 100644
--- a/lib/state/app/modules/holidays/bloc/holidays_state.g.dart
+++ b/lib/state/app/modules/holidays/bloc/holidays_state.g.dart
@@ -7,13 +7,19 @@ part of 'holidays_state.dart';
 // **************************************************************************
 
 _HolidaysState _$HolidaysStateFromJson(Map<String, dynamic> json) =>
-    _HolidaysState(
-      showPastHolidays: json['showPastHolidays'] as bool,
-      showDisclaimer: json['showDisclaimer'] as bool,
-      holidays: (json['holidays'] as List<dynamic>)
-          .map((e) => McHoliday.fromJson(e as Map<String, dynamic>))
-          .toList(),
-    );
+    $checkedCreate('_HolidaysState', json, ($checkedConvert) {
+      final val = _HolidaysState(
+        showPastHolidays: $checkedConvert('showPastHolidays', (v) => v as bool),
+        showDisclaimer: $checkedConvert('showDisclaimer', (v) => v as bool),
+        holidays: $checkedConvert(
+          'holidays',
+          (v) => (v as List<dynamic>)
+              .map((e) => McHoliday.fromJson(e as Map<String, dynamic>))
+              .toList(),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$HolidaysStateToJson(_HolidaysState instance) =>
     <String, dynamic>{
diff --git a/lib/state/app/modules/marianum_dates/bloc/marianum_dates_state.g.dart b/lib/state/app/modules/marianum_dates/bloc/marianum_dates_state.g.dart
index e923443..5636183 100644
--- a/lib/state/app/modules/marianum_dates/bloc/marianum_dates_state.g.dart
+++ b/lib/state/app/modules/marianum_dates/bloc/marianum_dates_state.g.dart
@@ -7,12 +7,18 @@ part of 'marianum_dates_state.dart';
 // **************************************************************************
 
 _MarianumDatesState _$MarianumDatesStateFromJson(Map<String, dynamic> json) =>
-    _MarianumDatesState(
-      showPastEvents: json['showPastEvents'] as bool,
-      events: (json['events'] as List<dynamic>)
-          .map((e) => MarianumDate.fromJson(e as Map<String, dynamic>))
-          .toList(),
-    );
+    $checkedCreate('_MarianumDatesState', json, ($checkedConvert) {
+      final val = _MarianumDatesState(
+        showPastEvents: $checkedConvert('showPastEvents', (v) => v as bool),
+        events: $checkedConvert(
+          'events',
+          (v) => (v as List<dynamic>)
+              .map((e) => MarianumDate.fromJson(e as Map<String, dynamic>))
+              .toList(),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$MarianumDatesStateToJson(_MarianumDatesState instance) =>
     <String, dynamic>{
@@ -21,14 +27,17 @@ Map<String, dynamic> _$MarianumDatesStateToJson(_MarianumDatesState instance) =>
     };
 
 _MarianumDate _$MarianumDateFromJson(Map<String, dynamic> json) =>
-    _MarianumDate(
-      uid: json['uid'] as String,
-      title: json['title'] as String,
-      description: json['description'] as String?,
-      start: DateTime.parse(json['start'] as String),
-      end: DateTime.parse(json['end'] as String),
-      isAllDay: json['isAllDay'] as bool,
-    );
+    $checkedCreate('_MarianumDate', json, ($checkedConvert) {
+      final val = _MarianumDate(
+        uid: $checkedConvert('uid', (v) => v as String),
+        title: $checkedConvert('title', (v) => v as String),
+        description: $checkedConvert('description', (v) => v as String?),
+        start: $checkedConvert('start', (v) => DateTime.parse(v as String)),
+        end: $checkedConvert('end', (v) => DateTime.parse(v as String)),
+        isAllDay: $checkedConvert('isAllDay', (v) => v as bool),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$MarianumDateToJson(_MarianumDate instance) =>
     <String, dynamic>{
diff --git a/lib/state/app/modules/marianum_message/bloc/marianum_message_state.g.dart b/lib/state/app/modules/marianum_message/bloc/marianum_message_state.g.dart
index e6c21ec..0df04bc 100644
--- a/lib/state/app/modules/marianum_message/bloc/marianum_message_state.g.dart
+++ b/lib/state/app/modules/marianum_message/bloc/marianum_message_state.g.dart
@@ -8,36 +8,49 @@ part of 'marianum_message_state.dart';
 
 _MarianumMessageState _$MarianumMessageStateFromJson(
   Map<String, dynamic> json,
-) => _MarianumMessageState(
-  messageList: MarianumMessageList.fromJson(
-    json['messageList'] as Map<String, dynamic>,
-  ),
-);
+) => $checkedCreate('_MarianumMessageState', json, ($checkedConvert) {
+  final val = _MarianumMessageState(
+    messageList: $checkedConvert(
+      'messageList',
+      (v) => MarianumMessageList.fromJson(v as Map<String, dynamic>),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$MarianumMessageStateToJson(
   _MarianumMessageState instance,
 ) => <String, dynamic>{'messageList': instance.messageList};
 
 _MarianumMessageList _$MarianumMessageListFromJson(Map<String, dynamic> json) =>
-    _MarianumMessageList(
-      base: json['base'] as String,
-      messages: (json['messages'] as List<dynamic>)
-          .map((e) => MarianumMessage.fromJson(e as Map<String, dynamic>))
-          .toList(),
-    );
+    $checkedCreate('_MarianumMessageList', json, ($checkedConvert) {
+      final val = _MarianumMessageList(
+        base: $checkedConvert('base', (v) => v as String),
+        messages: $checkedConvert(
+          'messages',
+          (v) => (v as List<dynamic>)
+              .map((e) => MarianumMessage.fromJson(e as Map<String, dynamic>))
+              .toList(),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$MarianumMessageListToJson(
   _MarianumMessageList instance,
 ) => <String, dynamic>{'base': instance.base, 'messages': instance.messages};
 
 _MarianumMessage _$MarianumMessageFromJson(Map<String, dynamic> json) =>
-    _MarianumMessage(
-      id: json['id'] as String? ?? '',
-      name: json['name'] as String,
-      date: json['date'] as String,
-      description: json['description'] as String? ?? '',
-      url: json['url'] as String,
-    );
+    $checkedCreate('_MarianumMessage', json, ($checkedConvert) {
+      final val = _MarianumMessage(
+        id: $checkedConvert('id', (v) => v as String? ?? ''),
+        name: $checkedConvert('name', (v) => v as String),
+        date: $checkedConvert('date', (v) => v as String),
+        description: $checkedConvert('description', (v) => v as String? ?? ''),
+        url: $checkedConvert('url', (v) => v as String),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$MarianumMessageToJson(_MarianumMessage instance) =>
     <String, dynamic>{
diff --git a/lib/state/app/modules/nextcloud_capabilities/bloc/nextcloud_capabilities_state.g.dart b/lib/state/app/modules/nextcloud_capabilities/bloc/nextcloud_capabilities_state.g.dart
index 98aed49..8b386cc 100644
--- a/lib/state/app/modules/nextcloud_capabilities/bloc/nextcloud_capabilities_state.g.dart
+++ b/lib/state/app/modules/nextcloud_capabilities/bloc/nextcloud_capabilities_state.g.dart
@@ -8,24 +8,56 @@ part of 'nextcloud_capabilities_state.dart';
 
 _NextcloudCapabilitiesState _$NextcloudCapabilitiesStateFromJson(
   Map<String, dynamic> json,
-) => _NextcloudCapabilitiesState(
-  apiEnabled: json['apiEnabled'] as bool? ?? false,
-  publicEnabled: json['publicEnabled'] as bool? ?? false,
-  publicMultipleLinks: json['publicMultipleLinks'] as bool? ?? false,
-  publicUploadEnabled: json['publicUploadEnabled'] as bool? ?? false,
-  publicPasswordEnforced: json['publicPasswordEnforced'] as bool? ?? false,
-  publicExpireEnabled: json['publicExpireEnabled'] as bool? ?? false,
-  publicExpireDays: (json['publicExpireDays'] as num?)?.toInt(),
-  publicExpireEnforced: json['publicExpireEnforced'] as bool? ?? false,
-  groupEnabled: json['groupEnabled'] as bool? ?? false,
-  resharing: json['resharing'] as bool? ?? false,
-  passwordMinLength: (json['passwordMinLength'] as num?)?.toInt(),
-  passwordEnforceUpperLower:
-      json['passwordEnforceUpperLower'] as bool? ?? false,
-  passwordEnforceNumeric: json['passwordEnforceNumeric'] as bool? ?? false,
-  passwordEnforceSpecial: json['passwordEnforceSpecial'] as bool? ?? false,
-  loaded: json['loaded'] as bool? ?? false,
-);
+) => $checkedCreate('_NextcloudCapabilitiesState', json, ($checkedConvert) {
+  final val = _NextcloudCapabilitiesState(
+    apiEnabled: $checkedConvert('apiEnabled', (v) => v as bool? ?? false),
+    publicEnabled: $checkedConvert('publicEnabled', (v) => v as bool? ?? false),
+    publicMultipleLinks: $checkedConvert(
+      'publicMultipleLinks',
+      (v) => v as bool? ?? false,
+    ),
+    publicUploadEnabled: $checkedConvert(
+      'publicUploadEnabled',
+      (v) => v as bool? ?? false,
+    ),
+    publicPasswordEnforced: $checkedConvert(
+      'publicPasswordEnforced',
+      (v) => v as bool? ?? false,
+    ),
+    publicExpireEnabled: $checkedConvert(
+      'publicExpireEnabled',
+      (v) => v as bool? ?? false,
+    ),
+    publicExpireDays: $checkedConvert(
+      'publicExpireDays',
+      (v) => (v as num?)?.toInt(),
+    ),
+    publicExpireEnforced: $checkedConvert(
+      'publicExpireEnforced',
+      (v) => v as bool? ?? false,
+    ),
+    groupEnabled: $checkedConvert('groupEnabled', (v) => v as bool? ?? false),
+    resharing: $checkedConvert('resharing', (v) => v as bool? ?? false),
+    passwordMinLength: $checkedConvert(
+      'passwordMinLength',
+      (v) => (v as num?)?.toInt(),
+    ),
+    passwordEnforceUpperLower: $checkedConvert(
+      'passwordEnforceUpperLower',
+      (v) => v as bool? ?? false,
+    ),
+    passwordEnforceNumeric: $checkedConvert(
+      'passwordEnforceNumeric',
+      (v) => v as bool? ?? false,
+    ),
+    passwordEnforceSpecial: $checkedConvert(
+      'passwordEnforceSpecial',
+      (v) => v as bool? ?? false,
+    ),
+    loaded: $checkedConvert('loaded', (v) => v as bool? ?? false),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$NextcloudCapabilitiesStateToJson(
   _NextcloudCapabilitiesState instance,
diff --git a/lib/state/app/modules/ticker/bloc/ticker_page_state.g.dart b/lib/state/app/modules/ticker/bloc/ticker_page_state.g.dart
index 59bf6e5..4480c03 100644
--- a/lib/state/app/modules/ticker/bloc/ticker_page_state.g.dart
+++ b/lib/state/app/modules/ticker/bloc/ticker_page_state.g.dart
@@ -7,11 +7,17 @@ part of 'ticker_page_state.dart';
 // **************************************************************************
 
 _TickerPageState _$TickerPageStateFromJson(Map<String, dynamic> json) =>
-    _TickerPageState(
-      page: json['page'] == null
-          ? null
-          : TickerPageResponse.fromJson(json['page'] as Map<String, dynamic>),
-    );
+    $checkedCreate('_TickerPageState', json, ($checkedConvert) {
+      final val = _TickerPageState(
+        page: $checkedConvert(
+          'page',
+          (v) => v == null
+              ? null
+              : TickerPageResponse.fromJson(v as Map<String, dynamic>),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$TickerPageStateToJson(_TickerPageState instance) =>
     <String, dynamic>{'page': instance.page};
diff --git a/lib/state/app/modules/ticker/bloc/ticker_state.g.dart b/lib/state/app/modules/ticker/bloc/ticker_state.g.dart
index 252682b..2b80f5f 100644
--- a/lib/state/app/modules/ticker/bloc/ticker_state.g.dart
+++ b/lib/state/app/modules/ticker/bloc/ticker_state.g.dart
@@ -6,15 +6,25 @@ part of 'ticker_state.dart';
 // JsonSerializableGenerator
 // **************************************************************************
 
-_TickerState _$TickerStateFromJson(Map<String, dynamic> json) => _TickerState(
-  ticker: json['ticker'] == null
-      ? null
-      : TickerResponse.fromJson(json['ticker'] as Map<String, dynamic>),
-  nav: json['nav'] == null
-      ? null
-      : TickerNavResponse.fromJson(json['nav'] as Map<String, dynamic>),
-  selectedSlug: json['selectedSlug'] as String?,
-);
+_TickerState _$TickerStateFromJson(Map<String, dynamic> json) =>
+    $checkedCreate('_TickerState', json, ($checkedConvert) {
+      final val = _TickerState(
+        ticker: $checkedConvert(
+          'ticker',
+          (v) => v == null
+              ? null
+              : TickerResponse.fromJson(v as Map<String, dynamic>),
+        ),
+        nav: $checkedConvert(
+          'nav',
+          (v) => v == null
+              ? null
+              : TickerNavResponse.fromJson(v as Map<String, dynamic>),
+        ),
+        selectedSlug: $checkedConvert('selectedSlug', (v) => v as String?),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$TickerStateToJson(_TickerState instance) =>
     <String, dynamic>{
diff --git a/lib/state/app/modules/timetable/bloc/timetable_state.g.dart b/lib/state/app/modules/timetable/bloc/timetable_state.g.dart
index a9daee3..d4bf905 100644
--- a/lib/state/app/modules/timetable/bloc/timetable_state.g.dart
+++ b/lib/state/app/modules/timetable/bloc/timetable_state.g.dart
@@ -6,56 +6,74 @@ part of 'timetable_state.dart';
 // JsonSerializableGenerator
 // **************************************************************************
 
-_TimetableState _$TimetableStateFromJson(Map<String, dynamic> json) =>
-    _TimetableState(
-      weekCache:
-          (json['weekCache'] as Map<String, dynamic>?)?.map(
+_TimetableState _$TimetableStateFromJson(
+  Map<String, dynamic> json,
+) => $checkedCreate('_TimetableState', json, ($checkedConvert) {
+  final val = _TimetableState(
+    weekCache: $checkedConvert(
+      'weekCache',
+      (v) =>
+          (v as Map<String, dynamic>?)?.map(
             (k, e) => MapEntry(
               k,
               TimetableGetWeekResponse.fromJson(e as Map<String, dynamic>),
             ),
           ) ??
           const <String, TimetableGetWeekResponse>{},
-      rooms: json['rooms'] == null
+    ),
+    rooms: $checkedConvert(
+      'rooms',
+      (v) => v == null
           ? null
-          : TimetableGetRoomsResponse.fromJson(
-              json['rooms'] as Map<String, dynamic>,
-            ),
-      subjects: json['subjects'] == null
+          : TimetableGetRoomsResponse.fromJson(v as Map<String, dynamic>),
+    ),
+    subjects: $checkedConvert(
+      'subjects',
+      (v) => v == null
           ? null
-          : TimetableGetSubjectsResponse.fromJson(
-              json['subjects'] as Map<String, dynamic>,
-            ),
-      schoolHolidays: json['schoolHolidays'] == null
+          : TimetableGetSubjectsResponse.fromJson(v as Map<String, dynamic>),
+    ),
+    schoolHolidays: $checkedConvert(
+      'schoolHolidays',
+      (v) => v == null
           ? null
-          : TimetableGetHolidaysResponse.fromJson(
-              json['schoolHolidays'] as Map<String, dynamic>,
-            ),
-      schoolyear: json['schoolyear'] == null
+          : TimetableGetHolidaysResponse.fromJson(v as Map<String, dynamic>),
+    ),
+    schoolyear: $checkedConvert(
+      'schoolyear',
+      (v) => v == null
           ? null
-          : TimetableGetSchoolyearResponse.fromJson(
-              json['schoolyear'] as Map<String, dynamic>,
-            ),
-      timegrid: json['timegrid'] == null
+          : TimetableGetSchoolyearResponse.fromJson(v as Map<String, dynamic>),
+    ),
+    timegrid: $checkedConvert(
+      'timegrid',
+      (v) => v == null
           ? null
-          : TimetableGetTimegridResponse.fromJson(
-              json['timegrid'] as Map<String, dynamic>,
-            ),
-      customEvents: json['customEvents'] == null
+          : TimetableGetTimegridResponse.fromJson(v as Map<String, dynamic>),
+    ),
+    customEvents: $checkedConvert(
+      'customEvents',
+      (v) => v == null
           ? null
-          : GetCustomTimetableEventResponse.fromJson(
-              json['customEvents'] as Map<String, dynamic>,
-            ),
-      startDate: DateTime.parse(json['startDate'] as String),
-      endDate: DateTime.parse(json['endDate'] as String),
-      dataVersion: (json['dataVersion'] as num?)?.toInt() ?? 0,
-      accessibleStartDate: json['accessibleStartDate'] == null
-          ? null
-          : DateTime.parse(json['accessibleStartDate'] as String),
-      accessibleEndDate: json['accessibleEndDate'] == null
-          ? null
-          : DateTime.parse(json['accessibleEndDate'] as String),
-    );
+          : GetCustomTimetableEventResponse.fromJson(v as Map<String, dynamic>),
+    ),
+    startDate: $checkedConvert('startDate', (v) => DateTime.parse(v as String)),
+    endDate: $checkedConvert('endDate', (v) => DateTime.parse(v as String)),
+    dataVersion: $checkedConvert(
+      'dataVersion',
+      (v) => (v as num?)?.toInt() ?? 0,
+    ),
+    accessibleStartDate: $checkedConvert(
+      'accessibleStartDate',
+      (v) => v == null ? null : DateTime.parse(v as String),
+    ),
+    accessibleEndDate: $checkedConvert(
+      'accessibleEndDate',
+      (v) => v == null ? null : DateTime.parse(v as String),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$TimetableStateToJson(_TimetableState instance) =>
     <String, dynamic>{
diff --git a/lib/storage/chat_background_settings.g.dart b/lib/storage/chat_background_settings.g.dart
index db468fb..4be1c6b 100644
--- a/lib/storage/chat_background_settings.g.dart
+++ b/lib/storage/chat_background_settings.g.dart
@@ -8,14 +8,23 @@ part of 'chat_background_settings.dart';
 
 ChatBackgroundSettings _$ChatBackgroundSettingsFromJson(
   Map<String, dynamic> json,
-) => ChatBackgroundSettings(
-  type: $enumDecode(_$ChatBackgroundTypeEnumMap, json['type']),
-  fit: $enumDecode(_$ChatBackgroundFitEnumMap, json['fit']),
-  colorValue: (json['colorValue'] as num?)?.toInt(),
-  imageVersion: (json['imageVersion'] as num).toInt(),
-  dim: (json['dim'] as num).toDouble(),
-  blur: (json['blur'] as num).toDouble(),
-);
+) => $checkedCreate('ChatBackgroundSettings', json, ($checkedConvert) {
+  final val = ChatBackgroundSettings(
+    type: $checkedConvert(
+      'type',
+      (v) => $enumDecode(_$ChatBackgroundTypeEnumMap, v),
+    ),
+    fit: $checkedConvert(
+      'fit',
+      (v) => $enumDecode(_$ChatBackgroundFitEnumMap, v),
+    ),
+    colorValue: $checkedConvert('colorValue', (v) => (v as num?)?.toInt()),
+    imageVersion: $checkedConvert('imageVersion', (v) => (v as num).toInt()),
+    dim: $checkedConvert('dim', (v) => (v as num).toDouble()),
+    blur: $checkedConvert('blur', (v) => (v as num).toDouble()),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$ChatBackgroundSettingsToJson(
   ChatBackgroundSettings instance,
diff --git a/lib/storage/dev_tools_settings.g.dart b/lib/storage/dev_tools_settings.g.dart
index f3f4972..0c2d997 100644
--- a/lib/storage/dev_tools_settings.g.dart
+++ b/lib/storage/dev_tools_settings.g.dart
@@ -7,23 +7,49 @@ part of 'dev_tools_settings.dart';
 // **************************************************************************
 
 DevToolsSettings _$DevToolsSettingsFromJson(Map<String, dynamic> json) =>
-    DevToolsSettings(
-      showPerformanceOverlay: json['showPerformanceOverlay'] as bool,
-      showFrameStats: json['showFrameStats'] as bool? ?? false,
-      showMemoryStats: json['showMemoryStats'] as bool? ?? false,
-      showSemanticsDebugger: json['showSemanticsDebugger'] as bool? ?? false,
-      slowAnimations: json['slowAnimations'] as bool? ?? false,
-      textScaleOverride: (json['textScaleOverride'] as num?)?.toDouble() ?? 0,
-      marianumConnectEndpoint:
-          $enumDecodeNullable(
-            _$MarianumConnectEndpointEnumMap,
-            json['marianumConnectEndpoint'],
-          ) ??
-          MarianumConnectEndpoint.live,
-      marianumConnectCustomUrl:
-          json['marianumConnectCustomUrl'] as String? ?? '',
-      emergencyNoticeUrl: json['emergencyNoticeUrl'] as String? ?? '',
-    );
+    $checkedCreate('DevToolsSettings', json, ($checkedConvert) {
+      final val = DevToolsSettings(
+        showPerformanceOverlay: $checkedConvert(
+          'showPerformanceOverlay',
+          (v) => v as bool,
+        ),
+        showFrameStats: $checkedConvert(
+          'showFrameStats',
+          (v) => v as bool? ?? false,
+        ),
+        showMemoryStats: $checkedConvert(
+          'showMemoryStats',
+          (v) => v as bool? ?? false,
+        ),
+        showSemanticsDebugger: $checkedConvert(
+          'showSemanticsDebugger',
+          (v) => v as bool? ?? false,
+        ),
+        slowAnimations: $checkedConvert(
+          'slowAnimations',
+          (v) => v as bool? ?? false,
+        ),
+        textScaleOverride: $checkedConvert(
+          'textScaleOverride',
+          (v) => (v as num?)?.toDouble() ?? 0,
+        ),
+        marianumConnectEndpoint: $checkedConvert(
+          'marianumConnectEndpoint',
+          (v) =>
+              $enumDecodeNullable(_$MarianumConnectEndpointEnumMap, v) ??
+              MarianumConnectEndpoint.live,
+        ),
+        marianumConnectCustomUrl: $checkedConvert(
+          'marianumConnectCustomUrl',
+          (v) => v as String? ?? '',
+        ),
+        emergencyNoticeUrl: $checkedConvert(
+          'emergencyNoticeUrl',
+          (v) => v as String? ?? '',
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$DevToolsSettingsToJson(DevToolsSettings instance) =>
     <String, dynamic>{
diff --git a/lib/storage/file_settings.g.dart b/lib/storage/file_settings.g.dart
index 38d4aa5..d810277 100644
--- a/lib/storage/file_settings.g.dart
+++ b/lib/storage/file_settings.g.dart
@@ -6,11 +6,18 @@ part of 'file_settings.dart';
 // JsonSerializableGenerator
 // **************************************************************************
 
-FileSettings _$FileSettingsFromJson(Map<String, dynamic> json) => FileSettings(
-  sortFoldersToTop: json['sortFoldersToTop'] as bool,
-  ascending: json['ascending'] as bool,
-  sortBy: $enumDecode(_$SortOptionEnumMap, json['sortBy']),
-);
+FileSettings _$FileSettingsFromJson(Map<String, dynamic> json) =>
+    $checkedCreate('FileSettings', json, ($checkedConvert) {
+      final val = FileSettings(
+        sortFoldersToTop: $checkedConvert('sortFoldersToTop', (v) => v as bool),
+        ascending: $checkedConvert('ascending', (v) => v as bool),
+        sortBy: $checkedConvert(
+          'sortBy',
+          (v) => $enumDecode(_$SortOptionEnumMap, v),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$FileSettingsToJson(FileSettings instance) =>
     <String, dynamic>{
diff --git a/lib/storage/file_view_settings.g.dart b/lib/storage/file_view_settings.g.dart
index 44d2e30..2e673e6 100644
--- a/lib/storage/file_view_settings.g.dart
+++ b/lib/storage/file_view_settings.g.dart
@@ -7,9 +7,15 @@ part of 'file_view_settings.dart';
 // **************************************************************************
 
 FileViewSettings _$FileViewSettingsFromJson(Map<String, dynamic> json) =>
-    FileViewSettings(
-      alwaysOpenExternally: json['alwaysOpenExternally'] as bool,
-    );
+    $checkedCreate('FileViewSettings', json, ($checkedConvert) {
+      final val = FileViewSettings(
+        alwaysOpenExternally: $checkedConvert(
+          'alwaysOpenExternally',
+          (v) => v as bool,
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$FileViewSettingsToJson(FileViewSettings instance) =>
     <String, dynamic>{'alwaysOpenExternally': instance.alwaysOpenExternally};
diff --git a/lib/storage/haptic_settings.g.dart b/lib/storage/haptic_settings.g.dart
index db1f522..486ce23 100644
--- a/lib/storage/haptic_settings.g.dart
+++ b/lib/storage/haptic_settings.g.dart
@@ -7,7 +7,15 @@ part of 'haptic_settings.dart';
 // **************************************************************************
 
 HapticSettings _$HapticSettingsFromJson(Map<String, dynamic> json) =>
-    HapticSettings(level: $enumDecode(_$HapticLevelEnumMap, json['level']));
+    $checkedCreate('HapticSettings', json, ($checkedConvert) {
+      final val = HapticSettings(
+        level: $checkedConvert(
+          'level',
+          (v) => $enumDecode(_$HapticLevelEnumMap, v),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$HapticSettingsToJson(HapticSettings instance) =>
     <String, dynamic>{'level': _$HapticLevelEnumMap[instance.level]!};
diff --git a/lib/storage/holidays_settings.g.dart b/lib/storage/holidays_settings.g.dart
index 976acb6..16e849e 100644
--- a/lib/storage/holidays_settings.g.dart
+++ b/lib/storage/holidays_settings.g.dart
@@ -7,10 +7,16 @@ part of 'holidays_settings.dart';
 // **************************************************************************
 
 HolidaysSettings _$HolidaysSettingsFromJson(Map<String, dynamic> json) =>
-    HolidaysSettings(
-      dismissedDisclaimer: json['dismissedDisclaimer'] as bool,
-      showPastEvents: json['showPastEvents'] as bool,
-    );
+    $checkedCreate('HolidaysSettings', json, ($checkedConvert) {
+      final val = HolidaysSettings(
+        dismissedDisclaimer: $checkedConvert(
+          'dismissedDisclaimer',
+          (v) => v as bool,
+        ),
+        showPastEvents: $checkedConvert('showPastEvents', (v) => v as bool),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$HolidaysSettingsToJson(HolidaysSettings instance) =>
     <String, dynamic>{
diff --git a/lib/storage/modules_settings.g.dart b/lib/storage/modules_settings.g.dart
index fe9b776..db07192 100644
--- a/lib/storage/modules_settings.g.dart
+++ b/lib/storage/modules_settings.g.dart
@@ -7,17 +7,35 @@ part of 'modules_settings.dart';
 // **************************************************************************
 
 ModulesSettings _$ModulesSettingsFromJson(Map<String, dynamic> json) =>
-    ModulesSettings(
-      moduleOrder: (json['moduleOrder'] as List<dynamic>)
-          .map((e) => $enumDecode(_$ModulesEnumMap, e))
-          .toList(),
-      hiddenModules: (json['hiddenModules'] as List<dynamic>)
-          .map((e) => $enumDecode(_$ModulesEnumMap, e))
-          .toList(),
-      autoFillBottomBar: json['autoFillBottomBar'] as bool? ?? true,
-      fixedBottomBarSlots: (json['fixedBottomBarSlots'] as num?)?.toInt() ?? 3,
-      teacherDefaultsApplied: json['teacherDefaultsApplied'] as bool? ?? false,
-    );
+    $checkedCreate('ModulesSettings', json, ($checkedConvert) {
+      final val = ModulesSettings(
+        moduleOrder: $checkedConvert(
+          'moduleOrder',
+          (v) => (v as List<dynamic>)
+              .map((e) => $enumDecode(_$ModulesEnumMap, e))
+              .toList(),
+        ),
+        hiddenModules: $checkedConvert(
+          'hiddenModules',
+          (v) => (v as List<dynamic>)
+              .map((e) => $enumDecode(_$ModulesEnumMap, e))
+              .toList(),
+        ),
+        autoFillBottomBar: $checkedConvert(
+          'autoFillBottomBar',
+          (v) => v as bool? ?? true,
+        ),
+        fixedBottomBarSlots: $checkedConvert(
+          'fixedBottomBarSlots',
+          (v) => (v as num?)?.toInt() ?? 3,
+        ),
+        teacherDefaultsApplied: $checkedConvert(
+          'teacherDefaultsApplied',
+          (v) => v as bool? ?? false,
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$ModulesSettingsToJson(
   ModulesSettings instance,
diff --git a/lib/storage/notification_settings.g.dart b/lib/storage/notification_settings.g.dart
index e468d36..4cfce38 100644
--- a/lib/storage/notification_settings.g.dart
+++ b/lib/storage/notification_settings.g.dart
@@ -8,11 +8,16 @@ part of 'notification_settings.dart';
 
 NotificationSettings _$NotificationSettingsFromJson(
   Map<String, dynamic> json,
-) => NotificationSettings(
-  enabled: json['enabled'] as bool? ?? true,
-  talkPermissionPromptShown:
-      json['talkPermissionPromptShown'] as bool? ?? false,
-);
+) => $checkedCreate('NotificationSettings', json, ($checkedConvert) {
+  final val = NotificationSettings(
+    enabled: $checkedConvert('enabled', (v) => v as bool? ?? true),
+    talkPermissionPromptShown: $checkedConvert(
+      'talkPermissionPromptShown',
+      (v) => v as bool? ?? false,
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$NotificationSettingsToJson(
   NotificationSettings instance,
diff --git a/lib/storage/settings.g.dart b/lib/storage/settings.g.dart
index 76c739f..d692eca 100644
--- a/lib/storage/settings.g.dart
+++ b/lib/storage/settings.g.dart
@@ -6,43 +6,61 @@ part of 'settings.dart';
 // JsonSerializableGenerator
 // **************************************************************************
 
-Settings _$SettingsFromJson(Map<String, dynamic> json) => Settings(
-  appTheme: Settings._themeFromJson(json['appTheme'] as String),
-  devToolsEnabled: json['devToolsEnabled'] as bool,
-  modulesSettings: ModulesSettings.fromJson(
-    json['modulesSettings'] as Map<String, dynamic>,
-  ),
-  timetableSettings: TimetableSettings.fromJson(
-    json['timetableSettings'] as Map<String, dynamic>,
-  ),
-  timetableFavoritesSettings: TimetableFavoritesSettings.fromJson(
-    json['timetableFavoritesSettings'] as Map<String, dynamic>,
-  ),
-  talkSettings: TalkSettings.fromJson(
-    json['talkSettings'] as Map<String, dynamic>,
-  ),
-  chatBackgroundSettings: ChatBackgroundSettings.fromJson(
-    json['chatBackgroundSettings'] as Map<String, dynamic>,
-  ),
-  fileSettings: FileSettings.fromJson(
-    json['fileSettings'] as Map<String, dynamic>,
-  ),
-  holidaysSettings: HolidaysSettings.fromJson(
-    json['holidaysSettings'] as Map<String, dynamic>,
-  ),
-  fileViewSettings: FileViewSettings.fromJson(
-    json['fileViewSettings'] as Map<String, dynamic>,
-  ),
-  notificationSettings: NotificationSettings.fromJson(
-    json['notificationSettings'] as Map<String, dynamic>,
-  ),
-  devToolsSettings: DevToolsSettings.fromJson(
-    json['devToolsSettings'] as Map<String, dynamic>,
-  ),
-  hapticSettings: HapticSettings.fromJson(
-    json['hapticSettings'] as Map<String, dynamic>,
-  ),
-);
+Settings _$SettingsFromJson(Map<String, dynamic> json) =>
+    $checkedCreate('Settings', json, ($checkedConvert) {
+      final val = Settings(
+        appTheme: $checkedConvert(
+          'appTheme',
+          (v) => Settings._themeFromJson(v as String),
+        ),
+        devToolsEnabled: $checkedConvert('devToolsEnabled', (v) => v as bool),
+        modulesSettings: $checkedConvert(
+          'modulesSettings',
+          (v) => ModulesSettings.fromJson(v as Map<String, dynamic>),
+        ),
+        timetableSettings: $checkedConvert(
+          'timetableSettings',
+          (v) => TimetableSettings.fromJson(v as Map<String, dynamic>),
+        ),
+        timetableFavoritesSettings: $checkedConvert(
+          'timetableFavoritesSettings',
+          (v) => TimetableFavoritesSettings.fromJson(v as Map<String, dynamic>),
+        ),
+        talkSettings: $checkedConvert(
+          'talkSettings',
+          (v) => TalkSettings.fromJson(v as Map<String, dynamic>),
+        ),
+        chatBackgroundSettings: $checkedConvert(
+          'chatBackgroundSettings',
+          (v) => ChatBackgroundSettings.fromJson(v as Map<String, dynamic>),
+        ),
+        fileSettings: $checkedConvert(
+          'fileSettings',
+          (v) => FileSettings.fromJson(v as Map<String, dynamic>),
+        ),
+        holidaysSettings: $checkedConvert(
+          'holidaysSettings',
+          (v) => HolidaysSettings.fromJson(v as Map<String, dynamic>),
+        ),
+        fileViewSettings: $checkedConvert(
+          'fileViewSettings',
+          (v) => FileViewSettings.fromJson(v as Map<String, dynamic>),
+        ),
+        notificationSettings: $checkedConvert(
+          'notificationSettings',
+          (v) => NotificationSettings.fromJson(v as Map<String, dynamic>),
+        ),
+        devToolsSettings: $checkedConvert(
+          'devToolsSettings',
+          (v) => DevToolsSettings.fromJson(v as Map<String, dynamic>),
+        ),
+        hapticSettings: $checkedConvert(
+          'hapticSettings',
+          (v) => HapticSettings.fromJson(v as Map<String, dynamic>),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$SettingsToJson(Settings instance) => <String, dynamic>{
   'appTheme': Settings._themeToJson(instance.appTheme),
diff --git a/lib/storage/talk_settings.g.dart b/lib/storage/talk_settings.g.dart
index 0b3e55b..520fab0 100644
--- a/lib/storage/talk_settings.g.dart
+++ b/lib/storage/talk_settings.g.dart
@@ -6,12 +6,25 @@ part of 'talk_settings.dart';
 // JsonSerializableGenerator
 // **************************************************************************
 
-TalkSettings _$TalkSettingsFromJson(Map<String, dynamic> json) => TalkSettings(
-  sortFavoritesToTop: json['sortFavoritesToTop'] as bool,
-  sortUnreadToTop: json['sortUnreadToTop'] as bool,
-  drafts: Map<String, String>.from(json['drafts'] as Map),
-  draftReplies: Map<String, int>.from(json['draftReplies'] as Map),
-);
+TalkSettings _$TalkSettingsFromJson(Map<String, dynamic> json) =>
+    $checkedCreate('TalkSettings', json, ($checkedConvert) {
+      final val = TalkSettings(
+        sortFavoritesToTop: $checkedConvert(
+          'sortFavoritesToTop',
+          (v) => v as bool,
+        ),
+        sortUnreadToTop: $checkedConvert('sortUnreadToTop', (v) => v as bool),
+        drafts: $checkedConvert(
+          'drafts',
+          (v) => Map<String, String>.from(v as Map),
+        ),
+        draftReplies: $checkedConvert(
+          'draftReplies',
+          (v) => Map<String, int>.from(v as Map),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$TalkSettingsToJson(TalkSettings instance) =>
     <String, dynamic>{
diff --git a/lib/storage/timetable_favorites_settings.g.dart b/lib/storage/timetable_favorites_settings.g.dart
index 54f0d0e..9973a2a 100644
--- a/lib/storage/timetable_favorites_settings.g.dart
+++ b/lib/storage/timetable_favorites_settings.g.dart
@@ -8,11 +8,17 @@ part of 'timetable_favorites_settings.dart';
 
 FavoriteTimetableElement _$FavoriteTimetableElementFromJson(
   Map<String, dynamic> json,
-) => FavoriteTimetableElement(
-  type: $enumDecode(_$TimetableElementTypeEnumMap, json['type']),
-  id: (json['id'] as num).toInt(),
-  label: json['label'] as String,
-);
+) => $checkedCreate('FavoriteTimetableElement', json, ($checkedConvert) {
+  final val = FavoriteTimetableElement(
+    type: $checkedConvert(
+      'type',
+      (v) => $enumDecode(_$TimetableElementTypeEnumMap, v),
+    ),
+    id: $checkedConvert('id', (v) => (v as num).toInt()),
+    label: $checkedConvert('label', (v) => v as String),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$FavoriteTimetableElementToJson(
   FavoriteTimetableElement instance,
@@ -31,11 +37,19 @@ const _$TimetableElementTypeEnumMap = {
 
 TimetableFavoritesSettings _$TimetableFavoritesSettingsFromJson(
   Map<String, dynamic> json,
-) => TimetableFavoritesSettings(
-  favorites: (json['favorites'] as List<dynamic>)
-      .map((e) => FavoriteTimetableElement.fromJson(e as Map<String, dynamic>))
-      .toList(),
-);
+) => $checkedCreate('TimetableFavoritesSettings', json, ($checkedConvert) {
+  final val = TimetableFavoritesSettings(
+    favorites: $checkedConvert(
+      'favorites',
+      (v) => (v as List<dynamic>)
+          .map(
+            (e) => FavoriteTimetableElement.fromJson(e as Map<String, dynamic>),
+          )
+          .toList(),
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$TimetableFavoritesSettingsToJson(
   TimetableFavoritesSettings instance,
diff --git a/lib/storage/timetable_settings.g.dart b/lib/storage/timetable_settings.g.dart
index 87c60d7..cf6e890 100644
--- a/lib/storage/timetable_settings.g.dart
+++ b/lib/storage/timetable_settings.g.dart
@@ -7,13 +7,19 @@ part of 'timetable_settings.dart';
 // **************************************************************************
 
 TimetableSettings _$TimetableSettingsFromJson(Map<String, dynamic> json) =>
-    TimetableSettings(
-      connectDoubleLessons: json['connectDoubleLessons'] as bool,
-      timetableNameMode: $enumDecode(
-        _$TimetableNameModeEnumMap,
-        json['timetableNameMode'],
-      ),
-    );
+    $checkedCreate('TimetableSettings', json, ($checkedConvert) {
+      final val = TimetableSettings(
+        connectDoubleLessons: $checkedConvert(
+          'connectDoubleLessons',
+          (v) => v as bool,
+        ),
+        timetableNameMode: $checkedConvert(
+          'timetableNameMode',
+          (v) => $enumDecode(_$TimetableNameModeEnumMap, v),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$TimetableSettingsToJson(
   TimetableSettings instance,
diff --git a/lib/view/pages/talk/widgets/chat_bubble.dart b/lib/view/pages/talk/widgets/chat_bubble.dart
index fbdd722..3f33521 100644
--- a/lib/view/pages/talk/widgets/chat_bubble.dart
+++ b/lib/view/pages/talk/widgets/chat_bubble.dart
@@ -121,6 +121,7 @@ class _ChatBubbleState extends State<ChatBubble>
       case GetRoomResponseObjectMessageType.comment:
       case GetRoomResponseObjectMessageType.voiceMessage:
       case GetRoomResponseObjectMessageType.command:
+      case GetRoomResponseObjectMessageType.unknown:
         return null;
     }
   }
diff --git a/lib/view/pages/talk/widgets/chat_tile.dart b/lib/view/pages/talk/widgets/chat_tile.dart
index ba56047..e8a4d47 100644
--- a/lib/view/pages/talk/widgets/chat_tile.dart
+++ b/lib/view/pages/talk/widgets/chat_tile.dart
@@ -4,6 +4,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 
 import '../../../../api/marianumcloud/talk/actions/talk_actions.dart';
+import '../../../../api/marianumcloud/talk/chat/get_chat_response.dart';
 import '../../../../api/marianumcloud/talk/chat/rich_object_string_processor.dart';
 import '../../../../api/marianumcloud/talk/room/get_room_response.dart';
 import '../../../../api/marianumcloud/talk/room/notification_level.dart';
@@ -69,8 +70,7 @@ class _ChatTileState extends State<ChatTile> {
   /// Memoised per last message: the tile rebuilds on every chat-list emit and
   /// the Markdown strip is a full parse. Keyed by content, since every refresh
   /// delivers new message objects.
-  String _lastMessagePreview() {
-    final last = widget.data.lastMessage;
+  String _lastMessagePreview(GetChatResponseObject last) {
     final key = (last.id, last.message, last.markdown);
     if (key == _previewFor) return _preview;
     final text = RichObjectStringProcessor.parseToString(
@@ -84,9 +84,16 @@ class _ChatTileState extends State<ChatTile> {
   Object? _previewFor;
   String _preview = '';
 
+  String _subtitle() {
+    final last = widget.data.lastMessage;
+    if (last == null) return 'Noch keine Nachrichten';
+    return '${last.sentAt.formatRelative()}: ${_lastMessagePreview(last)}';
+  }
+
   Future<void> _setCurrentAsRead() async {
     final token = widget.data.token;
-    final lastId = widget.data.lastMessage.id;
+    final lastId = widget.data.lastMessage?.id;
+    if (lastId == null) return;
     context.read<ChatListBloc>().markRoomAsRead(token, lastId);
     unawaited(NotificationTasks.clearNotificationsForChat(token));
     await context.read<ChatBloc>().sendServerReadMarker(token, lastId);
@@ -173,11 +180,7 @@ class _ChatTileState extends State<ChatTile> {
           ],
         ],
       ),
-      subtitle: Text(
-        '${widget.data.lastMessage.sentAt.formatRelative()}: '
-        '${_lastMessagePreview()}',
-        overflow: TextOverflow.ellipsis,
-      ),
+      subtitle: Text(_subtitle(), overflow: TextOverflow.ellipsis),
       trailing: widget.data.unreadMessages <= 0
           ? null
           : Semantics(
diff --git a/lib/widget_data/widget_data.g.dart b/lib/widget_data/widget_data.g.dart
index de71751..37f7f9f 100644
--- a/lib/widget_data/widget_data.g.dart
+++ b/lib/widget_data/widget_data.g.dart
@@ -7,19 +7,31 @@ part of 'widget_data.dart';
 // **************************************************************************
 
 _WidgetLesson _$WidgetLessonFromJson(Map<String, dynamic> json) =>
-    _WidgetLesson(
-      start: DateTime.parse(json['start'] as String),
-      end: DateTime.parse(json['end'] as String),
-      subjectShort: json['subjectShort'] as String,
-      subjectLong: json['subjectLong'] as String?,
-      room: json['room'] as String?,
-      teacher: json['teacher'] as String?,
-      originalTeacher: json['originalTeacher'] as String?,
-      status: $enumDecode(_$WidgetLessonStatusEnumMap, json['status']),
-      customColor: json['customColor'] as String?,
-      color: json['color'] as String?,
-      siblingCount: (json['siblingCount'] as num?)?.toInt() ?? 0,
-    );
+    $checkedCreate('_WidgetLesson', json, ($checkedConvert) {
+      final val = _WidgetLesson(
+        start: $checkedConvert('start', (v) => DateTime.parse(v as String)),
+        end: $checkedConvert('end', (v) => DateTime.parse(v as String)),
+        subjectShort: $checkedConvert('subjectShort', (v) => v as String),
+        subjectLong: $checkedConvert('subjectLong', (v) => v as String?),
+        room: $checkedConvert('room', (v) => v as String?),
+        teacher: $checkedConvert('teacher', (v) => v as String?),
+        originalTeacher: $checkedConvert(
+          'originalTeacher',
+          (v) => v as String?,
+        ),
+        status: $checkedConvert(
+          'status',
+          (v) => $enumDecode(_$WidgetLessonStatusEnumMap, v),
+        ),
+        customColor: $checkedConvert('customColor', (v) => v as String?),
+        color: $checkedConvert('color', (v) => v as String?),
+        siblingCount: $checkedConvert(
+          'siblingCount',
+          (v) => (v as num?)?.toInt() ?? 0,
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$WidgetLessonToJson(_WidgetLesson instance) =>
     <String, dynamic>{
@@ -48,13 +60,25 @@ const _$WidgetLessonStatusEnumMap = {
 };
 
 _WidgetPeriod _$WidgetPeriodFromJson(Map<String, dynamic> json) =>
-    _WidgetPeriod(
-      name: json['name'] as String,
-      startMinutes: (json['startMinutes'] as num).toInt(),
-      endMinutes: (json['endMinutes'] as num).toInt(),
-      virtualStartMinutes: (json['virtualStartMinutes'] as num).toInt(),
-      virtualEndMinutes: (json['virtualEndMinutes'] as num).toInt(),
-    );
+    $checkedCreate('_WidgetPeriod', json, ($checkedConvert) {
+      final val = _WidgetPeriod(
+        name: $checkedConvert('name', (v) => v as String),
+        startMinutes: $checkedConvert(
+          'startMinutes',
+          (v) => (v as num).toInt(),
+        ),
+        endMinutes: $checkedConvert('endMinutes', (v) => (v as num).toInt()),
+        virtualStartMinutes: $checkedConvert(
+          'virtualStartMinutes',
+          (v) => (v as num).toInt(),
+        ),
+        virtualEndMinutes: $checkedConvert(
+          'virtualEndMinutes',
+          (v) => (v as num).toInt(),
+        ),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$WidgetPeriodToJson(_WidgetPeriod instance) =>
     <String, dynamic>{
@@ -66,11 +90,14 @@ Map<String, dynamic> _$WidgetPeriodToJson(_WidgetPeriod instance) =>
     };
 
 _WidgetDayInfo _$WidgetDayInfoFromJson(Map<String, dynamic> json) =>
-    _WidgetDayInfo(
-      date: DateTime.parse(json['date'] as String),
-      isHoliday: json['isHoliday'] as bool? ?? false,
-      holidayName: json['holidayName'] as String?,
-    );
+    $checkedCreate('_WidgetDayInfo', json, ($checkedConvert) {
+      final val = _WidgetDayInfo(
+        date: $checkedConvert('date', (v) => DateTime.parse(v as String)),
+        isHoliday: $checkedConvert('isHoliday', (v) => v as bool? ?? false),
+        holidayName: $checkedConvert('holidayName', (v) => v as String?),
+      );
+      return val;
+    });
 
 Map<String, dynamic> _$WidgetDayInfoToJson(_WidgetDayInfo instance) =>
     <String, dynamic>{
@@ -79,26 +106,42 @@ Map<String, dynamic> _$WidgetDayInfoToJson(_WidgetDayInfo instance) =>
       'holidayName': instance.holidayName,
     };
 
-_WidgetTimetableData _$WidgetTimetableDataFromJson(Map<String, dynamic> json) =>
-    _WidgetTimetableData(
-      fetchedAt: DateTime.parse(json['fetchedAt'] as String),
-      anchorDate: DateTime.parse(json['anchorDate'] as String),
-      lessons: (json['lessons'] as List<dynamic>)
+_WidgetTimetableData _$WidgetTimetableDataFromJson(
+  Map<String, dynamic> json,
+) => $checkedCreate('_WidgetTimetableData', json, ($checkedConvert) {
+  final val = _WidgetTimetableData(
+    fetchedAt: $checkedConvert('fetchedAt', (v) => DateTime.parse(v as String)),
+    anchorDate: $checkedConvert(
+      'anchorDate',
+      (v) => DateTime.parse(v as String),
+    ),
+    lessons: $checkedConvert(
+      'lessons',
+      (v) => (v as List<dynamic>)
           .map((e) => WidgetLesson.fromJson(e as Map<String, dynamic>))
           .toList(),
-      periods:
-          (json['periods'] as List<dynamic>?)
+    ),
+    periods: $checkedConvert(
+      'periods',
+      (v) =>
+          (v as List<dynamic>?)
               ?.map((e) => WidgetPeriod.fromJson(e as Map<String, dynamic>))
               .toList() ??
           const <WidgetPeriod>[],
-      isHoliday: json['isHoliday'] as bool? ?? false,
-      holidayName: json['holidayName'] as String?,
-      days:
-          (json['days'] as List<dynamic>?)
+    ),
+    isHoliday: $checkedConvert('isHoliday', (v) => v as bool? ?? false),
+    holidayName: $checkedConvert('holidayName', (v) => v as String?),
+    days: $checkedConvert(
+      'days',
+      (v) =>
+          (v as List<dynamic>?)
               ?.map((e) => WidgetDayInfo.fromJson(e as Map<String, dynamic>))
               .toList() ??
           const <WidgetDayInfo>[],
-    );
+    ),
+  );
+  return val;
+});
 
 Map<String, dynamic> _$WidgetTimetableDataToJson(
   _WidgetTimetableData instance,
diff --git a/test/api/autocomplete_response_test.dart b/test/api/autocomplete_response_test.dart
new file mode 100644
index 0000000..1199b68
--- /dev/null
+++ b/test/api/autocomplete_response_test.dart
@@ -0,0 +1,32 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:marianum_mobile/api/json_lenient.dart';
+import 'package:marianum_mobile/api/marianumcloud/autocomplete/autocomplete_response.dart';
+
+void main() {
+  test('accepts the status as object, string or empty', () {
+    final response = AutocompleteResponse.fromJson({
+      'data': [
+        {
+          'id': 'a',
+          'label': 'A',
+          'status': {'status': 'online', 'message': null},
+        },
+        {'id': 'b', 'label': 'B', 'status': ''},
+        {'id': 'c', 'label': 'C', 'status': 'dnd'},
+      ],
+    });
+    expect(response.data.map((e) => e.status), ['online', null, 'dnd']);
+    expect(drainDecodeWarnings(), isEmpty);
+  });
+
+  test('skips an entry without id instead of failing the search', () {
+    final response = AutocompleteResponse.fromJson({
+      'data': [
+        {'label': 'no id'},
+        {'id': 'b', 'label': 'B'},
+      ],
+    });
+    expect(response.data.single.id, 'b');
+    expect(drainDecodeWarnings().single, contains('"id"'));
+  });
+}
diff --git a/test/talk/get_participants_response_test.dart b/test/talk/get_participants_response_test.dart
new file mode 100644
index 0000000..cd1e5e9
--- /dev/null
+++ b/test/talk/get_participants_response_test.dart
@@ -0,0 +1,23 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:marianum_mobile/api/marianumcloud/talk/get_participants/get_participants_response.dart';
+
+void main() {
+  test('reads inCall as a bitmask', () {
+    final participant = GetParticipantsResponseObject.fromJson({
+      'attendeeId': 1,
+      'actorType': 'users',
+      'actorId': 'u',
+      'displayName': 'U',
+      'participantType': 3,
+      'lastPing': 0,
+      'inCall': 7,
+      'permissions': 0,
+      'attendeePermissions': 0,
+      'sessionIds': <String>[],
+    });
+    expect(participant.isInCall, isTrue);
+    expect(participant.inCallWithAudio, isTrue);
+    expect(participant.inCallWithVideo, isTrue);
+    expect(participant.inCallViaPhone, isFalse);
+  });
+}
diff --git a/test/talk/get_room_response_test.dart b/test/talk/get_room_response_test.dart
new file mode 100644
index 0000000..13800b7
--- /dev/null
+++ b/test/talk/get_room_response_test.dart
@@ -0,0 +1,122 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:marianum_mobile/api/json_lenient.dart';
+import 'package:marianum_mobile/api/marianumcloud/talk/chat/get_chat_response.dart';
+import 'package:marianum_mobile/api/marianumcloud/talk/room/get_room_response.dart';
+
+Map<String, dynamic> _room({bool withLastMessage = true}) => {
+  'id': 1,
+  'token': 'abc',
+  'type': 2,
+  'name': 'room',
+  'displayName': 'Room',
+  'description': '',
+  'participantType': 3,
+  'participantFlags': 0,
+  'readOnly': 0,
+  'listable': 0,
+  'lastPing': 0,
+  'sessionId': '0',
+  'hasPassword': false,
+  'hasCall': false,
+  'callFlag': 0,
+  'canStartCall': true,
+  'canDeleteConversation': false,
+  'canLeaveConversation': true,
+  'lastActivity': 1700000000,
+  'isFavorite': false,
+  'notificationLevel': 0,
+  'unreadMessages': 0,
+  'unreadMention': false,
+  'unreadMentionDirect': false,
+  'lastReadMessage': 0,
+  'lastCommonReadMessage': 0,
+  if (withLastMessage)
+    'lastMessage': {
+      'id': 7,
+      'token': 'abc',
+      'actorType': 'users',
+      'actorId': 'u',
+      'actorDisplayName': 'U',
+      'timestamp': 1700000000,
+      'systemMessage': '',
+      'messageType': 'comment',
+      'isReplyable': true,
+      'referenceId': '',
+      'message': 'hi',
+    },
+};
+
+void main() {
+  setUp(drainDecodeWarnings);
+
+  test('skips a room that does not parse and records class and key', () {
+    final broken = _room()..remove('displayName');
+    final response = GetRoomResponse.fromJson({
+      'data': [broken, _room()],
+    });
+    expect(response.data.length, 1);
+    final warnings = drainDecodeWarnings();
+    expect(warnings, hasLength(1));
+    expect(warnings.single, contains('GetRoomResponseObject'));
+    expect(warnings.single, contains('"displayName"'));
+  });
+
+  test('parses a room whose lastMessage the server omitted', () {
+    final response = GetRoomResponse.fromJson({
+      'data': [_room(withLastMessage: false), _room()],
+    });
+    final rooms = response.data.toList();
+    expect(rooms[0].lastMessage, isNull);
+    expect(rooms[1].lastMessage?.id, 7);
+    expect(drainDecodeWarnings(), isEmpty);
+  });
+
+  test('maps unknown enum values to their fallbacks', () {
+    final room = _room()
+      ..['type'] = 99
+      ..['notificationLevel'] = 42;
+    (room['lastMessage'] as Map<String, dynamic>)
+      ..['actorType'] = 'emails'
+      ..['messageType'] = 'record-video'
+      ..['messageParameters'] = {
+        'actor': {'type': 'deck-card', 'id': '1', 'name': 'Card'},
+      };
+    final parsed = GetRoomResponse.fromJson({
+      'data': [room],
+    }).data.single;
+    expect(parsed.type, GetRoomResponseObjectConversationType.unknown);
+    expect(
+      parsed.notificationLevel,
+      GetRoomResponseObjectParticipantNotificationLevel.defaultLevel,
+    );
+    expect(
+      parsed.lastMessage?.actorType,
+      GetRoomResponseObjectMessageActorType.email,
+    );
+    expect(
+      parsed.lastMessage?.messageType,
+      GetRoomResponseObjectMessageType.unknown,
+    );
+    expect(
+      parsed.lastMessage?.messageParameters?['actor']?.type,
+      RichObjectStringObjectType.unknown,
+    );
+    expect(drainDecodeWarnings(), isEmpty);
+  });
+
+  test('turns a deleted parent into a placeholder', () {
+    final room = _room();
+    (room['lastMessage'] as Map<String, dynamic>)['parent'] = {
+      'id': 3,
+      'deleted': true,
+    };
+    final parent = GetRoomResponse.fromJson({
+      'data': [room],
+    }).data.single.lastMessage?.parent;
+    expect(parent?.id, 3);
+    expect(
+      parent?.messageType,
+      GetRoomResponseObjectMessageType.deletedComment,
+    );
+  });
+}