fix: add 30s timeout to API calls and catchError fallback on schedule load

Without a timeout, a hanging backend request left the schedule page showing
an infinite spinner forever. Timeout ensures any hung request fails fast and
the spinner resolves. The catchError fallback in schedule_view handles the
edge case where getProfessional rejects unexpectedly.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

lib/services/api_service.dart

@@ -30,8 +30,10 @@ class ApiService {
     throw Exception(body['message'] ?? 'Error ${res.statusCode}');
   }
 
+  static const _timeout = Duration(seconds: 30);
+
   Future<dynamic> get(String path) async {
-    final res = await http.get(Uri.parse('$baseUrl$path'), headers: await _headers());
+    final res = await http.get(Uri.parse('$baseUrl$path'), headers: await _headers()).timeout(_timeout);
     return _parse(res);
   }
 
@@ -40,7 +42,7 @@ class ApiService {
       Uri.parse('$baseUrl$path'),
       headers: await _headers(),
       body: jsonEncode(body),
-    );
+    ).timeout(_timeout);
     return _parse(res);
   }
 
@@ -49,12 +51,12 @@ class ApiService {
       Uri.parse('$baseUrl$path'),
       headers: await _headers(),
       body: jsonEncode(body),
-    );
+    ).timeout(_timeout);
     return _parse(res);
   }
 
   Future<dynamic> delete(String path) async {
-    final res = await http.delete(Uri.parse('$baseUrl$path'), headers: await _headers());
+    final res = await http.delete(Uri.parse('$baseUrl$path'), headers: await _headers()).timeout(_timeout);
     return _parse(res);
   }
 

lib/ui/views/schedule_view.dart

@@ -1,3 +1,4 @@
+import 'package:prosapp_web_app/models/profesional.dart';
 import 'package:prosapp_web_app/models/usuario.dart';
 import 'package:prosapp_web_app/providers/auth_provider.dart';
 import 'package:prosapp_web_app/providers/professional_form_provider.dart';
@@ -39,6 +40,8 @@ class _ScheduleViewState extends State<ScheduleView> {
     professionalFormProvider.clear();
     proProvider.getProfessional(authProvider.user!.id).then((value) {
       professionalFormProvider.setProfesional(value);
+    }).catchError((_) {
+      professionalFormProvider.setProfesional(Profesional.empty());
     });
 
     profileFormProvider.user = authProvider.user;