claude refactorings, flutter best practices, platform dependent changes, general cleanup

lib/api/marianumcloud/talk/get_reactions/get_reactions.dart

@@ -0,0 +1,24 @@
+import 'dart:convert';
+
+import 'package:http/http.dart' as http;
+import 'package:http/http.dart';
+
+import '../../../api_params.dart';
+import '../talk_api.dart';
+import 'get_reactions_response.dart';
+
+class GetReactions extends TalkApi<GetReactionsResponse> {
+  String chatToken;
+  int messageId;
+  GetReactions({required this.chatToken, required this.messageId}) : super('v1/reaction/$chatToken/$messageId', null);
+
+  @override
+  GetReactionsResponse assemble(String raw) {
+    final decoded = jsonDecode(raw) as Map<String, dynamic>;
+    return GetReactionsResponse.fromJson(decoded['ocs'] as Map<String, dynamic>);
+  }
+
+  @override
+  Future<Response>? request(Uri uri, ApiParams? body, Map<String, String>? headers) => http.get(uri, headers: headers);
+
+}