feat: migrate prosapp_web_app from Firebase to NestJS API

- Replace Firebase Auth with JWT stored in SharedPreferences
- Replace Firestore with REST API calls via new ApiService
- Replace Firebase Storage with POST /storage/upload
- Remove firebase_auth, firebase_core, cloud_firestore,
  firebase_storage, firebase_messaging, google_sign_in deps
- Add api_service.dart as central HTTP client

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

lib/src/models/user_model.dart

@@ -1,75 +1,53 @@
-import 'package:cloud_firestore/cloud_firestore.dart';
-import 'package:firebase_storage/firebase_storage.dart';
-import 'package:prosappco/src/presentation/screens/professional.dart';
-
 class UserModel {
+  final String id;
   final String name;
   final String city;
   final String? profession;
-  final String? state;
-  final Reference? photo;
+  final int proState;
+  final String? picture;
+  final String? banner;
   final int? tarifa;
   final String? phoneNumber;
-  final String? token;
+  final String? email;
+  final String? gender;
+  final String? birthday;
 
-  UserModel(this.name, this.city, this.profession, this.state, this.photo,
-      this.tarifa, this.phoneNumber, this.token);
+  UserModel({
+    required this.id,
+    required this.name,
+    required this.city,
+    this.profession,
+    this.proState = 0,
+    this.picture,
+    this.banner,
+    this.tarifa,
+    this.phoneNumber,
+    this.email,
+    this.gender,
+    this.birthday,
+  });
 
-  static Future<UserModel> fromJson(
-      Map<String, dynamic>? json, String uid) async {
-    try {
-      if (json == null) return UserModel('', '', '', null, null, 0, '', '');
-
-      String? avatar = json['photo'];
-      return UserModel(
-        json['name'],
-        json['city'],
-        json['profesion'],
-        json['estado'],
-        avatar != null ? storage.ref().child(avatar) : null,
-        json['tarifas'] ?? 0,
-        json['phoneNumber'],
-        json['token'],
-      );
-    } catch (e) {
-      print('$e');
-      return UserModel('', '', '', null, null, 0, '', '');
-    }
+  factory UserModel.fromApi(Map<String, dynamic> json) {
+    final professional = json['professionals'] as Map<String, dynamic>?;
+    return UserModel(
+      id: json['id'] ?? '',
+      name: json['name'] ?? 'Sin nombre',
+      city: json['city'] ?? '',
+      profession: professional?['profession'],
+      proState: json['pro_state'] ?? 0,
+      picture: json['picture'],
+      banner: professional?['banner_picture'],
+      tarifa: professional?['rate'] != null
+          ? double.tryParse(professional!['rate'].toString())?.toInt()
+          : null,
+      phoneNumber: json['phone'],
+      email: json['email'],
+      gender: json['gender'],
+      birthday: json['birthday'],
+    );
   }
 
   @override
-  String toString() {
-    return 'UserModel(name: $name, city: $city, profession: $profession, state: $state, tarifa: $tarifa, phoneNumber: $phoneNumber, token: $token)';
-  }
-
-  static UserModel fromFirestore(Map<String, dynamic> firestoreMap) {
-    try {
-      String? avatar = firestoreMap['photo'];
-      return UserModel(
-        firestoreMap['name'] ?? 'Sin nombre',
-        firestoreMap['city'] ?? 'Sin ciudad',
-        firestoreMap['profesion'],
-        firestoreMap['estado'],
-        avatar != null ? storage.ref().child(avatar) : null,
-        firestoreMap['tarifas'] ?? 0,
-        firestoreMap['phoneNumber'] ?? 'Sin numero',
-        firestoreMap['token'],
-      );
-    } catch (e) {
-      print('DesdeProvider $e');
-      return UserModel('', '', '', null, null, 0, '', '');
-    }
-  }
-
-  static Future<UserModel> getUser(String uid) async {
-    try {
-      final snapshot =
-          await FirebaseFirestore.instance.collection('users').doc(uid).get();
-      final Map<String, dynamic>? data = snapshot.data();
-      return fromJson(data, uid);
-    } catch (e) {
-      print('Error getting user: $e');
-      return UserModel('', '', '', null, null, 0, '', '');
-    }
-  }
+  String toString() =>
+      'UserModel(id: $id, name: $name, city: $city, profession: $profession, proState: $proState)';
 }