Task/prefill form with current cash balance value in account details dialog (#6998)

* Prefill form with current cash balance value

* Update changelog

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Changed
+
+- Prefilled the form in the account balance management with the current cash balance
+
 ## 3.8.0 - 2026-06-07
 
 ### Added

apps/client/src/app/components/account-detail-dialog/account-detail-dialog.html

@@ -148,6 +148,7 @@
           [accountBalances]="accountBalances"
           [accountCurrency]="currency"
           [accountId]="data.accountId"
+          [currentBalance]="balance"
           [locale]="user?.settings?.locale"
           [showActions]="
             !data.hasImpersonationId &&

libs/ui/src/lib/account-balances/account-balances.component.ts

@@ -13,6 +13,7 @@ import {
   OnChanges,
   OnInit,
   Output,
+  effect,
   inject,
   input,
   viewChild
@@ -70,6 +71,7 @@ export class GfAccountBalancesComponent implements OnChanges, OnInit {
     input.required<AccountBalancesResponse['balances']>();
   public readonly accountCurrency = input.required<string>();
   public readonly accountId = input.required<string>();
+  public readonly currentBalance = input<number | null>();
   public readonly displayedColumns: string[] = ['date', 'value', 'actions'];
   public readonly locale = input(getLocale());
   public readonly showActions = input(true);
@@ -89,6 +91,17 @@ export class GfAccountBalancesComponent implements OnChanges, OnInit {
 
   public constructor() {
     addIcons({ calendarClearOutline, ellipsisHorizontal, trashOutline });
+
+    effect(() => {
+      const currentBalance = this.currentBalance();
+
+      if (
+        this.accountBalanceForm.controls.balance.pristine &&
+        typeof currentBalance === 'number'
+      ) {
+        this.accountBalanceForm.controls.balance.setValue(currentBalance);
+      }
+    });
   }
 
   public ngOnInit() {