fix(schedules): actually persist the professional's opening hours

Saving opening hours from the app never did anything. The payload went to
PATCH /professionals/me as a map keyed by day name ({"monday": {"habilitado":
true, "range1Hour1": "8:0"}}), and that endpoint silently drops a `schedules`
key — it answers 200 with the record unchanged. So the professional edited
their hours, got "Información actualizada correctamente", and the agenda kept
whatever it had.

The real endpoint is PATCH /professionals/me/schedules and it takes an array
of {day_of_week, enabled, continuous_day, range*_hour*} with zero-padded
times, which is what the web has been sending all along.

Verified against the backend: the previous payload returns 200 and changes
nothing; the new one returns 200 and the rows come back updated.

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

packages/professional_repository/lib/src/entities/schedule_entity.dart

@@ -90,11 +90,28 @@ class ScheduleEntity extends Equatable {
     };
   }
 
-  String? formatTimeOfDay(TimeOfDay? time) {
-    if (time != null) {
-      return "${time.hour.toString()}:${time.minute.toString()}";
-    }
-    return null;
+  String? formatTimeOfDay(TimeOfDay? time) => formatTimePadded(time);
+
+  /// "08:05", never "8:5" — the backend matches /^\d{2}:\d{2}$/.
+  static String? formatTimePadded(TimeOfDay? time) {
+    if (time == null) return null;
+    final h = time.hour.toString().padLeft(2, '0');
+    final m = time.minute.toString().padLeft(2, '0');
+    return '$h:$m';
+  }
+
+  /// The row shape PATCH /professionals/me/schedules expects.
+  /// [dayOfWeek] is 0 = Monday … 6 = Sunday, the backend's own convention.
+  Map<String, dynamic> toScheduleDto(int dayOfWeek) {
+    return {
+      'day_of_week': dayOfWeek,
+      'enabled': enabled,
+      'continuous_day': continuousDay,
+      'range1_hour1': formatTimePadded(range1Hour1),
+      'range1_hour2': formatTimePadded(range1Hour2),
+      'range2_hour1': formatTimePadded(range2Hour1),
+      'range2_hour2': formatTimePadded(range2Hour2),
+    };
   }
 
   static String? getFormatTime(TimeOfDay? time) {

packages/professional_repository/lib/src/entities/schedules.dart

@@ -63,6 +63,24 @@ class Schedules extends Equatable {
     );
   }
 
+  /// The array PATCH /professionals/me/schedules expects, ordered
+  /// 0 = Monday … 6 = Sunday.
+  ///
+  /// The map form below is NOT accepted by the backend: sending it to
+  /// /professionals/me returns 200 and silently discards the schedules, which
+  /// is why editing opening hours appeared to work and never persisted.
+  List<Map<String, dynamic>> toSchedulesArray() {
+    return [
+      monday.toScheduleDto(0),
+      tuesday.toScheduleDto(1),
+      wednesday.toScheduleDto(2),
+      thursday.toScheduleDto(3),
+      friday.toScheduleDto(4),
+      saturday.toScheduleDto(5),
+      sunday.toScheduleDto(6),
+    ];
+  }
+
   Map<String, dynamic> toJson() {
     return {
       'monday': monday.toJson(),

packages/professional_repository/lib/src/repositories/api_professional_repository.dart

@@ -234,6 +234,9 @@ class ApiProfessionalRepository {
     PaymentMethodEntity paymentMethods, {
     int slotDurationMinutes = 120,
   }) async {
+    // Two calls on purpose: /professionals/me ignores a `schedules` key
+    // (returns 200 and drops it), and the schedules endpoint takes the array
+    // form. Sending them together is what made saving opening hours a no-op.
     await _patch('/professionals/me', {
       'address': address,
       'aditional_address': aditionalAddress,
@@ -242,11 +245,14 @@ class ApiProfessionalRepository {
       'location_preferences': enumToInt(locationPreferences),
       'latitude': latitude,
       'longitude': longitude,
-      'schedules': schedules.toJson(),
       'payment_methods': paymentMethods.toDocument(),
       'slot_duration_minutes': slotDurationMinutes,
     });
 
+    await _patch('/professionals/me/schedules', {
+      'schedules': schedules.toSchedulesArray(),
+    });
+
     if (_proInfo != null) {
       await updateFromFirebase(userId: _proInfo!.id);
     }