migrated the breaker system to MarianumConnect and refactored the API response to a rule-based model with support for version-specific blocks using maxBuild.

lib/widget/breaker/breaker.dart

@@ -1,9 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 
-import '../../api/mhsl/breaker/get_breakers/get_breakers_response.dart';
+import '../../api/marianumconnect/queries/get_breakers/get_breakers_response.dart';
 import '../../state/app/modules/breaker/bloc/breaker_bloc.dart';
-import '../../widget/placeholder_view.dart';
 
 class Breaker extends StatelessWidget {
   final BreakerArea breaker;
@@ -16,13 +15,71 @@ class Breaker extends StatelessWidget {
     final bloc = context.watch<BreakerBloc>();
     final blocked = bloc.isBlocked(breaker);
     if (blocked != null) {
-      return PlaceholderView(
-        icon: Icons.app_blocking_outlined,
-        text:
-            'Die App / Dieser Bereich ist zurzeit nicht verfügbar!\n\n'
-            '${blocked.isEmpty ? "Es wurde vom Server kein Grund übermittelt.\nAktualisiere die App und versuche es später erneut" : blocked}',
-      );
+      return _BreakerBlockedView(message: blocked);
     }
     return child;
   }
 }
+
+class _BreakerBlockedView extends StatelessWidget {
+  final String message;
+
+  const _BreakerBlockedView({required this.message});
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final scheme = theme.colorScheme;
+    final reason = message.trim();
+
+    return Material(
+      color: scheme.surface,
+      child: CustomScrollView(
+        physics: const AlwaysScrollableScrollPhysics(),
+        slivers: [
+          SliverFillRemaining(
+            hasScrollBody: false,
+            child: Center(
+              child: Padding(
+                padding: const EdgeInsets.symmetric(
+                  horizontal: 32,
+                  vertical: 24,
+                ),
+                child: Column(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    Icon(
+                      Icons.construction_outlined,
+                      size: 60,
+                      color: scheme.onSurfaceVariant,
+                    ),
+                    const SizedBox(height: 24),
+                    Text(
+                      'Momentan nicht verfügbar',
+                      textAlign: TextAlign.center,
+                      style: theme.textTheme.titleLarge?.copyWith(
+                        fontWeight: FontWeight.w600,
+                        color: scheme.onSurface,
+                      ),
+                    ),
+                    if (reason.isNotEmpty) ...[
+                      const SizedBox(height: 10),
+                      Text(
+                        reason,
+                        textAlign: TextAlign.center,
+                        style: theme.textTheme.bodyMedium?.copyWith(
+                          color: scheme.onSurfaceVariant,
+                          height: 1.4,
+                        ),
+                      ),
+                    ],
+                  ],
+                ),
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}