Add Supa account and search changes

apps/weblibre/lib/presentation/main_app.dart

@@ -23,6 +23,7 @@ import 'package:weblibre/core/providers/router.dart';
 import 'package:weblibre/domain/services/app_initialization.dart';
 import 'package:weblibre/features/sync/domain/entities/sync_repository_state.dart';
 import 'package:weblibre/features/sync/domain/repositories/sync.dart';
+import 'package:weblibre/features/web_search/domain/controllers/sandbox_capture_controller.dart';
 import 'package:weblibre/presentation/widgets/failure_widget.dart';
 import 'package:weblibre/utils/ui_helper.dart' as ui_helper;
 
@@ -97,7 +98,9 @@ class MainApp extends HookConsumerWidget {
               uiScaleFactor: uiScaleFactor,
               disableAnimations: disableAnimations,
               child: _SyncEventListener(
-                child: child ?? const SizedBox.shrink(),
+                child: _SandboxCaptureErrorListener(
+                  child: child ?? const SizedBox.shrink(),
+                ),
               ),
             );
           },
@@ -221,6 +224,39 @@ class _AppTextScaler extends TextScaler {
   int get hashCode => Object.hash(baseTextScaler, uiScaleFactor);
 }
 
+class _SandboxCaptureErrorListener extends ConsumerWidget {
+  final Widget child;
+
+  const _SandboxCaptureErrorListener({required this.child});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    ref.listen(sandboxCaptureErrorsProvider, (previous, next) {
+      final error = next.value;
+      if (error == null) return;
+      final message = switch (error.kind) {
+        SandboxCaptureErrorKind.insufficientCredits =>
+          error.detail ??
+              'You have no search credits left. Purchase more to continue.',
+        SandboxCaptureErrorKind.tokenIssuanceFailed =>
+          error.detail ??
+              'Could not issue new search tokens. Check your connection and try again.',
+        SandboxCaptureErrorKind.fetchPolicyRejected =>
+          'Capture blocked by fetch policy: ${error.detail ?? 'not allowed'}',
+        SandboxCaptureErrorKind.captureFailed =>
+          'Capture failed: ${error.detail ?? 'unknown error'}',
+        SandboxCaptureErrorKind.downloadFailed =>
+          'Capture artifact download failed.',
+        SandboxCaptureErrorKind.unknown =>
+          'Sandbox capture error: ${error.detail ?? 'unknown error'}',
+      };
+      ui_helper.showErrorMessage(context, message);
+    });
+
+    return child;
+  }
+}
+
 class _SyncEventListener extends ConsumerWidget {
   final Widget child;