fix: align Flutter endpoints and model parsing with actual NestJS backend

- Auth: phone login → POST /auth/phone (direct, no OTP); link phone → POST /auth/verify-phone; add email → POST /auth/link-email
- Services: replace query-param paths with dedicated role endpoints (/services/me, /services/professional/requests, /services/professional, etc.)
- Services: PATCH /services/:id → PATCH /services/:id/status
- Calendar: → GET /services/professional/calendar
- Professionals: /users/professionals → /professionals (handles {data:[...]} response)
- Professional info: /professional-info/:id → /professionals/:id; PATCH → /professionals/me
- Comments: /comments?... → /comments/user/:id and /comments/professional/:id
- Chat: /chats → /chat; start chat → POST /chat/start/:professionalId; poll GET /chat/:chatId/messages; send → POST /chat/:chatId/message
- Cities: /cities → GET /locations/countries (parse nested countries→regions→cities)
- Profesional.fromDocument: null-safe fields; convert schedules array→Schedules, specializations array→name/picture lists, payment_methods object/array
- Usuario.fromDocument: null-safe professional_state and id
- UsuarioProfesional.fromDocument: handle backend format (users nested, professional at top level)
- ScheduleEntity.parseTime: handle ISO8601 time strings from backend
- MessageEntity.fromDocument: accept sender_id (backend) or owner_id (legacy)

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

lib/models/profesional.dart

@@ -1,6 +1,7 @@
 import 'package:prosapp_web_app/models/location_preferences.dart';
 import 'package:prosapp_web_app/models/payment_method_entity.dart';
 import 'package:prosapp_web_app/models/schedules.dart';
+import 'package:prosapp_web_app/models/schedules_entity.dart';
 
 class Profesional {
   final String id;
@@ -42,25 +43,81 @@ class Profesional {
   });
 
   static Profesional fromDocument(Map<String, dynamic> doc) {
+    // Backend returns schedules as array [{day_of_week, enabled, ...}]; convert to Schedules
+    Schedules parsedSchedules = Schedules.empty;
+    final rawSchedules = doc['schedules'];
+    if (rawSchedules is List && rawSchedules.isNotEmpty) {
+      final days = ['monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday', 'sunday'];
+      final map = <int, Map<String, dynamic>>{};
+      for (final s in rawSchedules) {
+        map[(s['day_of_week'] as int)] = s as Map<String, dynamic>;
+      }
+      ScheduleEntity _se(int day) {
+        final s = map[day];
+        if (s == null) return ScheduleEntity.empty;
+        return ScheduleEntity(
+          enabled: (s['enabled'] as bool?) ?? false,
+          continuousDay: (s['continuous_day'] as bool?) ?? false,
+          range1Hour1: ScheduleEntity.parseTime(s['range1_hour1']?.toString()),
+          range1Hour2: ScheduleEntity.parseTime(s['range1_hour2']?.toString()),
+          range2Hour1: ScheduleEntity.parseTime(s['range2_hour1']?.toString()),
+          range2Hour2: ScheduleEntity.parseTime(s['range2_hour2']?.toString()),
+        );
+      }
+      parsedSchedules = Schedules(
+        monday: _se(0), tuesday: _se(1), wednesday: _se(2), thursday: _se(3),
+        friday: _se(4), saturday: _se(5), sunday: _se(6),
+      );
+    } else if (rawSchedules is Map) {
+      parsedSchedules = Schedules.fromDocument(rawSchedules as Map<String, dynamic>);
+    }
+
+    // Specializations: array of objects [{name, picture}] or list of strings
+    List<String> specs = [];
+    List<String> specPics = [];
+    final rawSpecs = doc['specializations'];
+    if (rawSpecs is List) {
+      for (final s in rawSpecs) {
+        if (s is Map) {
+          specs.add((s['name'] as String?) ?? '');
+          specPics.add((s['picture'] as String?) ?? '');
+        } else {
+          specs.add(s.toString());
+        }
+      }
+    }
+    final rawSpecPics = doc['specializations_pictures'];
+    if (specPics.isEmpty && rawSpecPics is List) {
+      specPics = List<String>.from(rawSpecPics);
+    }
+
+    // payment_methods: object {nequi, datafono, transferencia} or array with one element or null
+    PaymentMethodEntity pm = PaymentMethodEntity.empty;
+    final rawPm = doc['payment_methods'];
+    if (rawPm is Map<String, dynamic>) {
+      pm = PaymentMethodEntity.fromDocument(rawPm);
+    } else if (rawPm is List && rawPm.isNotEmpty) {
+      pm = PaymentMethodEntity.fromDocument(rawPm.first as Map<String, dynamic>);
+    }
+
     return Profesional(
       id: doc['id'] as String,
-      identification: doc['identification'] as String,
-      address: doc['address'] as String,
-      aditionalAddress: doc['aditional_address'] as String,
-      profession: doc['profession'] as String,
-      ratePreferences: doc['rate_preferences'] as bool,
-      rate: doc['rate'] as String,
-      locationPreferences: intToEnum(doc['location_preferences'] as int),
-      bannerPicture: doc['banner_picture'] as String,
-      identificationPicture: doc['identification_picture'] as String,
-      certificatePicture: doc['certificate_picture'] as String,
-      latitude: double.parse(doc['latitude'].toString()),
-      longitude: double.parse(doc['longitude'].toString()),
-      specializations: List<String>.from(doc['specializations']),
-      specializationsPictures:
-          List<String>.from(doc['specializations_pictures']),
-      schedules: Schedules.fromDocument(doc['schedules']),
-      paymentMethods: PaymentMethodEntity.fromDocument(doc['payment_methods']),
+      identification: (doc['identification'] as String?) ?? '',
+      address: (doc['address'] as String?) ?? '',
+      aditionalAddress: (doc['aditional_address'] as String?) ?? '',
+      profession: (doc['profession'] as String?) ?? '',
+      ratePreferences: (doc['rate_preferences'] as bool?) ?? false,
+      rate: (doc['rate'] as String?) ?? '',
+      locationPreferences: intToEnum((doc['location_preferences'] as int?) ?? 0),
+      bannerPicture: (doc['banner_picture'] as String?) ?? '',
+      identificationPicture: (doc['identification_picture'] as String?) ?? '',
+      certificatePicture: (doc['certificate_picture'] as String?) ?? '',
+      latitude: (doc['latitude'] as num?)?.toDouble() ?? 0.0,
+      longitude: (doc['longitude'] as num?)?.toDouble() ?? 0.0,
+      specializations: specs,
+      specializationsPictures: specPics,
+      schedules: parsedSchedules,
+      paymentMethods: pm,
     );
   }