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/user_repository/lib/src/models/my_user.dart

@@ -14,6 +14,7 @@ class MyUser extends Equatable {
   final ProState proState;
   final String? token;
   final bool isPhoneVerified;
+  final DateTime? rejectedAt;
 
   const MyUser({
     required this.id,
@@ -28,6 +29,7 @@ class MyUser extends Equatable {
     required this.proState,
     this.token,
     this.isPhoneVerified = false,
+    this.rejectedAt,
   });
 
   get drawerLabel => email != null && email!.isNotEmpty
@@ -66,6 +68,7 @@ class MyUser extends Equatable {
     ProState? proState,
     String? token,
     bool? isPhoneVerified,
+    DateTime? rejectedAt,
   }) {
     return MyUser(
       id: id ?? this.id,
@@ -80,6 +83,7 @@ class MyUser extends Equatable {
       proState: proState ?? this.proState,
       token: token ?? this.token,
       isPhoneVerified: isPhoneVerified ?? this.isPhoneVerified,
+      rejectedAt: rejectedAt ?? this.rejectedAt,
     );
   }
 
@@ -135,5 +139,6 @@ class MyUser extends Equatable {
         proState,
         token,
         isPhoneVerified,
+        rejectedAt,
       ];
 }