Fixed search field in payment page and cleaned up payment flow

frontend/pshared/lib/provider/payment/provider.dart

@@ -1,64 +0,0 @@
-import 'package:flutter/foundation.dart';
-
-import 'package:pshared/models/payment/payment.dart';
-import 'package:pshared/provider/organizations.dart';
-import 'package:pshared/provider/payment/quotation.dart';
-import 'package:pshared/provider/resource.dart';
-import 'package:pshared/service/payment/service.dart';
-
-
-class PaymentProvider extends ChangeNotifier {
-  late OrganizationsProvider _organization;
-  late QuotationProvider _quotation;
-
-  Resource<Payment> _payment = Resource(data: null, isLoading: false, error: null);
-  bool _isLoaded = false;
-
-  void update(OrganizationsProvider organization, QuotationProvider quotation) {
-    _quotation = quotation;
-    _organization = organization;
-  }
-
-  Payment? get payment => _payment.data;
-  bool get isLoading => _payment.isLoading;
-  Exception? get error => _payment.error;
-  bool get isReady => _isLoaded && !_payment.isLoading && _payment.error == null;
-
-  void _setResource(Resource<Payment> payment) {
-    _payment = payment;
-    notifyListeners();
-  }
-
-  Future<Payment?> pay({String? idempotencyKey, Map<String, String>? metadata}) async {
-    if (!_organization.isOrganizationSet) throw StateError('Organization is not set');
-    if (!_quotation.isReady) throw StateError('Quotation is not ready');
-    final quoteRef = _quotation.quotation?.quoteRef;
-    if (quoteRef == null || quoteRef.isEmpty) {
-      throw StateError('Quotation reference is not set');
-    }
-
-    _setResource(_payment.copyWith(isLoading: true, error: null));
-    try {
-      final response = await PaymentService.pay(
-        _organization.current.id,
-        quoteRef,
-        idempotencyKey: idempotencyKey,
-        metadata: metadata,
-      );
-      _isLoaded = true;
-      _setResource(_payment.copyWith(data: response, isLoading: false, error: null));
-    } catch (e) {
-      _setResource(_payment.copyWith(
-        data: null,
-        error: e is Exception ? e : Exception(e.toString()),
-        isLoading: false,
-      ));
-    }
-    return _payment.data;
-  }
-
-  void reset() {
-    _setResource(Resource(data: null, isLoading: false, error: null));
-    _isLoaded = false;
-  }
-}