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>

packages/setting_repository/lib/src/entities/entities.dart

@@ -1 +1,2 @@
 export '/src/entities/setting_entity.dart';
+export '/src/entities/policies_entity.dart';

packages/setting_repository/lib/src/entities/policies_entity.dart

@@ -0,0 +1,21 @@
+import 'package:equatable/equatable.dart';
+
+class PoliciesEntity extends Equatable {
+  final String privacy;
+  final String terms;
+
+  const PoliciesEntity({
+    required this.privacy,
+    required this.terms,
+  });
+
+  static PoliciesEntity fromDocument(Map<String, dynamic> doc) {
+    return PoliciesEntity(
+      privacy: doc['privacy'] as String? ?? '',
+      terms: doc['terms'] as String? ?? '',
+    );
+  }
+
+  @override
+  List<Object?> get props => [privacy, terms];
+}

packages/setting_repository/lib/src/entities/setting_entity.dart

@@ -19,6 +19,7 @@ class SettingEntity extends Equatable {
   final String? terminosCondiciones;
   final String? terminosCondicionesTitle;
   final String? terminosCondicionesBody;
+  final num? rejectionWaitDays;
 
   const SettingEntity({
     required this.tarifas,
@@ -39,6 +40,7 @@ class SettingEntity extends Equatable {
     required this.terminosCondiciones,
     required this.terminosCondicionesTitle,
     required this.terminosCondicionesBody,
+    this.rejectionWaitDays,
   });
 
   static SettingEntity fromDocument(Map<String, dynamic> doc) {
@@ -61,6 +63,7 @@ class SettingEntity extends Equatable {
       terminosCondiciones: doc['terminos_condiciones'] as String?,
       terminosCondicionesTitle: doc['terminos_condiciones_title'] as String?,
       terminosCondicionesBody: doc['terminos_condiciones_body'] as String?,
+      rejectionWaitDays: doc['rejection_wait_days'] as num?,
     );
   }
 
@@ -84,6 +87,7 @@ class SettingEntity extends Equatable {
         terminosCondiciones,
         terminosCondicionesTitle,
         terminosCondicionesBody,
+        rejectionWaitDays,
       ];
 
   @override