implemented the Ticker module with a native ProseMirror document renderer and integrated API support for structured content, navigation trees, and proxied files

lib/view/pages/ticker/widgets/ticker_content_card.dart

@@ -0,0 +1,22 @@
+import 'package:flutter/material.dart';
+
+import '../../../../theming/app_theme.dart';
+
+/// Shared surface for rendered ticker content so the "Aktuelles" home and the
+/// sub-pages get identical margin, padding and background tint.
+class TickerContentCard extends StatelessWidget {
+  final Widget child;
+
+  const TickerContentCard({super.key, required this.child});
+
+  @override
+  Widget build(BuildContext context) => Card(
+    margin: const EdgeInsets.fromLTRB(
+      AppSpacing.sm,
+      AppSpacing.sm,
+      AppSpacing.sm,
+      0,
+    ),
+    child: Padding(padding: const EdgeInsets.all(AppSpacing.md), child: child),
+  );
+}