feat: create a dedicated provider for dashbot navigation

lib/dashbot/core/utils/dashbot_route_utils.dart

@@ -0,0 +1,22 @@
+import 'package:apidash/models/models.dart';
+
+import '../routes/dashbot_routes.dart';
+
+/// Computes the base Dashbot route for a given request based on whether a
+/// response exists.
+/// - Returns [DashbotRoutes.dashbotHome] if the request has a response (either
+///   statusCode or responseStatus present).
+/// - Otherwise returns [DashbotRoutes.dashbotDefault].
+String computeDashbotBaseRoute(RequestModel? req) {
+  final hasResponse = (req?.httpResponseModel?.statusCode != null) ||
+      (req?.responseStatus != null);
+  return hasResponse ? DashbotRoutes.dashbotHome : DashbotRoutes.dashbotDefault;
+}
+
+/// Returns true if the route that should be shown for [req] differs from the
+/// currently active [currentRoute].
+/// This helper is pure and does not perform any side effects.
+bool needsDashbotRouteChange(RequestModel? req, String currentRoute) {
+  final target = computeDashbotBaseRoute(req);
+  return target != currentRoute;
+}