fix: port 7 web features and repair the endless-loading screens

Root cause behind most "stuck loading" reports: the backend changed shape
(schedules became an array, location_preferences a string) while the mobile
parser still hard-cast to Map/int. The TypeError was swallowed by a silent
catch that returned null, and screens only handled the success state, so a
parse failure rendered as a permanent spinner. Same class of bug appeared
across service lists via non-null map lookups and a total absence of
request timeouts.

Ported from prosappweb:
- in-app suggestions (POST /suggestions)
- policies/terms from GET /settings/policies
- configurable appointment length (slot_duration_minutes)
- block/unblock calendar slots (POST /services/block)
- GPS city detection on the profile (Nominatim)
- server-side professional search with haversine distance
- retry cooldown after a rejected professional application

Reliability:
- parse schedules array (day_of_week 0=Mon) and string location_preferences
- read times as wall clock, so 08:00 stays 08:00 across timezones
- carry minutes into hours in TimeOfDay.add; a minute-based step used to
  loop forever and freeze the calendar (covered by test/time_slots_test.dart)
- semver update check instead of string equality, which blocked every build
  that did not exactly match the configured version
- request timeouts across all repositories
- surface HTTP >= 400 instead of reporting failed writes as success
- error states with retry instead of an indefinite shimmer

Includes pre-existing uncommitted work from the UI redesign.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

lib/dependency/app_di.dart

@@ -16,9 +16,11 @@ import 'package:prosappco/blocs/service_bloc/service_bloc.dart';
 import 'package:prosappco/blocs/setting_bloc/setting_bloc.dart';
 import 'package:prosappco/blocs/sign_up_bloc/sign_up_bloc.dart';
 import 'package:prosappco/blocs/sing_in_bloc/sign_in_bloc.dart';
+import 'package:prosappco/blocs/suggestion_bloc/suggestion_bloc.dart';
 import 'package:prosappco/local_notifications/local_notifications.dart';
 import 'package:score_repository/score_repository.dart';
 import 'package:service_repository/service_repository.dart';
+import 'package:suggestion_repository/suggestion_repository.dart';
 import 'package:user_repository/user_repository.dart';
 import 'package:city_repository/city_repository.dart';
 import 'package:setting_repository/setting_repository.dart';
@@ -42,6 +44,7 @@ class AppDI {
     injector.registerSingleton(() => ApiServiceRepository());
     injector.registerSingleton(() => ApiChatRepository());
     injector.registerSingleton(() => ApiScoreRepository());
+    injector.registerSingleton(() => ApiSuggestionRepository());
 
     injector.registerSingleton<AuthenticationBloc>((() =>
         AuthenticationBloc(myUserRepository: injector.get<UserRepository>())));
@@ -105,5 +108,11 @@ class AppDI {
         userRepository: injector.get<UserRepository>(),
       ),
     );
+
+    injector.registerDependency<SuggestionBloc>(
+      () => SuggestionBloc(
+        suggestionRepository: injector.get<ApiSuggestionRepository>(),
+      ),
+    );
   }
 }