Add enums, AuthService, and integrate backend registration endpoints

- Add separate enum files: BuildingType, PropertyStatus, BookingStatus, CommissionType, IdentityType, UserRole, City, LoginMethod, OwnerType, CustomerType
- Add AuthService (addToken/getToken/deleteToken)
- Update api.js: use AuthService, add Owner/Add and Customer/Add endpoints
- Update login page to use AuthService for token storage
- Rewrite owner register: 3-step flow with OwnerType dropdown, backend integration, OTP verification
- Rewrite tenant register: 2-step flow with CustomerType dropdown, backend integration, OTP verification
- Update homepage and property detail to use enums instead of hardcoded maps
- Update AddPropertyForm to import from enums directly
- Add console logs and status toasts linked to API response messages

app/login/page.js

@@ -29,6 +29,7 @@ import {
   isEmail,
   isPhoneNumber,
 } from '../utils/api';
+import AuthService from '../services/AuthService';
 
 export default function LoginPage() {
   const router = useRouter();
@@ -87,10 +88,10 @@ export default function LoginPage() {
       console.log('[Login] Response:', result);
 
       if (result.status === 200) {
-        // Login success — store token
+        // Login success — store token via AuthService
         const token = typeof result.data === 'string' ? result.data : result.data?.token || result.data;
-        localStorage.setItem('token', token);
-        console.log('[Login] Token stored successfully');
+        AuthService.addToken(token);
+        console.log('[Login] Token stored via AuthService');
 
         // Decode token to get user info (basic JWT decode)
         try {
@@ -182,11 +183,11 @@ export default function LoginPage() {
       console.log('[OTP] Verify response:', result);
 
       if (result.ok) {
-        // Verified — store token if returned
+        // Verified — store token if returned via AuthService
         const token = typeof result.data === 'string' ? result.data : result.data?.token || result.data;
         if (token && typeof token === 'string' && token.includes('.')) {
-          localStorage.setItem('token', token);
-          console.log('[OTP] Token stored');
+          AuthService.addToken(token);
+          console.log('[OTP] Token stored via AuthService');
         }
 
         localStorage.setItem('user', JSON.stringify({