优化账户余额调整功能：新增调整余额的逻辑，更新相关页面以显示账户余额和可用额度，调整路由配置以移除不必要的动画效果。

MY_REQUIREMENTS.md

@@ -1,7 +1,7 @@
 # ezBookkeeping 个人需求清单
 
 > 基于 fork 版本的定制开发需求，持续更新。
-> 标注：✅ 易实现 | ⚠️ 中等难度 | ❌ 难/暂缓 | ❓ 待确认 | 🟢 已完成
+> 标注：⚠️ 中等难度 | ❌ 难/暂缓 | 🟢 已完成
 
 ---
 
@@ -22,15 +22,18 @@
 
 ## 二、账户功能
 
-### 2. ⚠️ 信用卡账户：额度与剩余额度
+### 2. 🟢 信用卡账户：额度与剩余额度
-**描述：** 为信用卡类型账户新增「信用额度」字段，在账户列表和详情中展示「已用额度」和「剩余额度」。
+**描述：** 为信用卡类型账户新增「信用额度」字段，在账户列表显示「可用额度」。
 
-**实现思路：**
+**已完成：**
-- 后端：账户数据库表新增 `credit_limit` 字段，修改 API
+- 后端：`AccountExtend` JSON blob 新增 `CreditLimit` 字段（无需数据库迁移）
-- 前端：账户编辑页增加额度输入，账户列表/详情显示剩余额度（= 额度 - 欠款）
+- API：`AccountCreateRequest` / `AccountModifyRequest` / `AccountInfoResponse` 增加 `creditLimit`
-- 涉及文件：后端 `pkg/models/account.go`、前端 `EditPage.vue`、`ListPage.vue`
+- 前端 model：`Account` 类增加 `creditLimit` 字段，同步 `toCreateRequest` / `toModifyRequest`
+- 移动端 EditPage：CreditCard 分类时显示信用额度输入项
+- 移动端 ListPage：账户列表显示「可用额度」（= `creditLimit + balance`，因信用卡余额为负值）
+- 语言包：中英文均已添加 "Credit Limit" / "Available"
 
-### 8. ⚠️ 账户交易列表顶部显示账户信息
+### 3. ⚠️ 账户交易列表顶部显示账户信息
 **描述：** 在按账户筛选的交易列表页面顶部，显示账户名称、余额（或信用卡欠款+额度）等信息卡片。
 
 **实现思路：**
@@ -39,28 +42,31 @@
 - 若多账户筛选则显示多张卡片
 - 涉及文件：`src/views/mobile/transactions/ListPage.vue`
 
-### 9. ✅ 允许直接修改账户余额（自动插入调整记录）
+### 4. 🟢 允许直接修改账户余额（自动插入调整记录）
-**描述：** 在账户详情提供「调整余额」入口，输入目标余额后，自动计算差值并插入一条「余额调整」类型交易记录。
+**描述：** 在账户编辑页直接修改余额字段，保存时自动计算差值并插入一条「余额调整」类型交易记录。
 
-**现状：** 代码中已存在 `ModifyBalance` 交易类型，可能已有后端支持，仅需确认前端入口是否存在。
+**已完成：**
-
+- 后端：移除「账户已有交易时不允许添加 ModifyBalance」限制
-**实现思路：**
+- 后端：`Amount` 和 `RelatedAccountAmount` 均存储 delta（而非目标余额）；删除该交易可撤销 delta
-- 确认 `ModifyBalance` 交易类型的前端入口
+- 前端 store：新增 `adjustAccountBalance({ accountId, targetBalance, currentBalance })` 函数
-- 若无，在账户详情页增加「调整余额」按钮，跳转至记账页并预填该类型
+- 移动端 EditPage：余额字段对已有账户解除只读，保存时若余额变化先调用 `adjustAccountBalance`；捕获 `NothingWillBeUpdated (200004)` 视为成功
+- 桌面端 EditDialog：同上逻辑，支持多子账户逐一调整
 
 ---
 
 ## 三、记账页面
 
-### 3. ✅ 记账页显示当前账户余额 / 欠款+额度
+### 5. 🟢 记账页显示当前账户余额 / 欠款+额度
-**描述：** 在记账页面选择账户后，在账户名称旁或下方显示该账户的当前余额（普通账户）或欠款+额度（信用卡）。
+**描述：** 在记账页面选择账户后，在账户名称下方显示该账户的当前余额（普通账户）或欠款金额（信用卡/负债）。
 
-**实现思路：**
+**已完成：**
-- 纯前端改动，从 account store 读取余额信息
+- 信用卡账户显示「可用额度: ¥xxx」（= creditLimit + balance）
-- 在账户选择区域旁增加余额展示
+- 普通负债账户显示欠款正数，普通资产账户显示余额
-- 涉及文件：`src/views/mobile/transactions/EditPage.vue`
+- 转账时源账户和目标账户均显示
+- 移动端：账户行 footer；桌面端：`custom-selection-secondary-text`
+- 涉及文件：`src/views/mobile/transactions/EditPage.vue`、`src/views/desktop/transactions/list/dialogs/EditDialog.vue`
 
-### 11. ✅ 记录上次选择的账户
+### 6. ❓ 记录上次选择的账户
 **描述：** 新建交易时，默认选中上次使用的账户，而非每次重置为默认账户。
 
 **实现思路：**
@@ -72,7 +78,7 @@
 
 ## 四、小键盘
 
-### 6. 🟢 小键盘布局调整
+### 7. 🟢 小键盘布局调整
 **描述：** 调整数字键盘布局。
 
 **已完成：**
@@ -93,7 +99,7 @@
 
 ## 五、交易详情
 
-### 7. 🟢 交易详情菜单增加「编辑」和「删除」
+### 8. 🟢 交易详情菜单增加「编辑」和「删除」
 **描述：** 交易详情页三点菜单中增加编辑和删除操作。
 
 **已完成：**
@@ -106,7 +112,7 @@
 
 ## 六、分类选择
 
-### 10. ✅ 分类选择默认全部展开
+### 9. ❓ 分类选择默认全部展开
 **描述：** 在记账页面选择分类时，默认将所有一级分类展开显示子分类，或在设置中可配置哪些分类默认展开。
 
 **实现思路：**
@@ -118,29 +124,26 @@
 
 ## 七、性能与动画
 
-### 12. 🟢 底部 Tab 切换无动画 + 全局动画加速
+### 10. 🟢 全局动画加速
-**描述：** 底部 5 个主 Tab 切换无动画，其余动画加速。
+**描述：** 全局页面跳转及各类弹层动画加速。
 
 **已完成：**
-- 5 个主 Tab（首页、交易列表、账户、统计、设置）路由加 `animate: false`
 - 全局动画时长从 300ms 加快至 150ms（页面跳转、Sheet、ActionSheet、Popup、Dialog、Popover）
-- 涉及文件：`src/router/mobile.ts`、`src/styles/mobile/global.scss`
+- Tab 切换动画保持原样（设置中已有开关可控制）
+- 涉及文件：`src/styles/mobile/global.scss`
 
-### 4. 🟢 点击响应卡顿优化
+### 11. 🟢 点击响应卡顿优化
 **描述：** 点击按钮有延迟感，点不上的问题。
 
 **已完成：**
 - `tapHoldDelay` 从默认 750ms 降至 500ms，减少长按判定等待
 - 涉及文件：`src/MobileApp.vue`
 
-**未完成（已放弃）：**
-- HomePage 预加载 tags 数据（用户已 revert）
-
 ---
 
 ## 八、离线 / 缓存
 
-### 5. ❌ 本地优先 / 离线数据缓存（暂缓）
+### 12. ❌ 本地优先 / 离线数据缓存（暂缓）
 **描述：** 交易数据缓存至本地，优先展示缓存数据，后台静默拉取最新数据并更新。
 
 **现状：** Service Worker 已实现静态资源缓存（图片、字体、地图瓦片），但**交易业务数据**目前不做本地缓存。
@@ -159,14 +162,14 @@
 | # | 需求 | 状态 |
 |---|------|------|
 | 1 | 自选主题色 | ⚠️ 待做 |
-| 2 | 信用卡额度 | ⚠️ 待做（需改后端） |
+| 2 | 信用卡额度 | 🟢 已完成 |
-| 3 | 记账页显示余额 | ✅ 待做 |
+| 3 | 账户信息卡片 | ⚠️ 待做 |
-| 4 | 点击卡顿优化 | 🟢 部分完成 |
+| 4 | 调整余额入口 | 🟢 已完成 |
-| 5 | 离线缓存 | ❌ 暂缓 |
+| 5 | 记账页显示余额 | 🟢 已完成 |
-| 6 | 小键盘布局 | 🟢 已完成 |
+| 6 | 记住上次账户 | ❓ 待定 |
-| 7 | 详情编辑/删除 | 🟢 已完成 |
+| 7 | 小键盘布局 | 🟢 已完成 |
-| 8 | 账户信息卡片 | ⚠️ 待做 |
+| 8 | 详情编辑/删除 | 🟢 已完成 |
-| 9 | 调整余额入口 | ✅ 待做 |
+| 9 | 分类默认展开 | ❓ 待定 |
-| 10 | 分类默认展开 | ✅ 待做 |
+| 10 | 全局动画加速 | 🟢 已完成 |
-| 11 | 记住上次账户 | ✅ 待做 |
+| 11 | 点击卡顿优化 | 🟢 已完成 |
-| 12 | Tab 无动画 + 加速 | 🟢 已完成 |
+| 12 | 离线缓存 | ❌ 暂缓 |

pkg/models/transaction.go

@@ -544,7 +544,9 @@ func (t *Transaction) ToTransactionInfoResponse(tagIds []int64, editable bool) *
 	destinationAccountId := int64(0)
 	destinationAmount := int64(0)
 
-	if t.Type == TRANSACTION_DB_TYPE_TRANSFER_OUT {
+	if t.Type == TRANSACTION_DB_TYPE_MODIFY_BALANCE {
+		sourceAmount = t.RelatedAccountAmount // always return delta
+	} else if t.Type == TRANSACTION_DB_TYPE_TRANSFER_OUT {
 		destinationAccountId = t.RelatedAccountId
 		destinationAmount = t.RelatedAccountAmount
 	} else if t.Type == TRANSACTION_DB_TYPE_TRANSFER_IN {

pkg/services/transactions.go

@@ -954,7 +954,7 @@ func (s *TransactionService) ModifyTransaction(c core.Context, transaction *mode
 
 		if transaction.Amount != oldTransaction.Amount {
 			if oldTransaction.Type == models.TRANSACTION_DB_TYPE_MODIFY_BALANCE {
-				transaction.RelatedAccountAmount = oldTransaction.RelatedAccountAmount + transaction.Amount - oldTransaction.Amount
+				transaction.RelatedAccountAmount = transaction.Amount // Amount IS the new delta
 				updateCols = append(updateCols, "related_account_amount")
 			}
 
@@ -2251,17 +2251,8 @@ func (s *TransactionService) doCreateTransaction(c core.Context, database *datas
 
 	// Verify balance modification transaction and calculate real amount
 	if transaction.Type == models.TRANSACTION_DB_TYPE_MODIFY_BALANCE {
-		otherTransactionExists, err := sess.Cols("uid", "deleted", "account_id").Where("uid=? AND deleted=? AND account_id=?", transaction.Uid, false, sourceAccount.AccountId).Limit(1).Exist(&models.Transaction{})
-
-		if err != nil {
-			log.Errorf(c, "[transactions.doCreateTransaction] failed to get whether other transactions exist, because %s", err.Error())
-			return err
-		} else if otherTransactionExists {
-			return errs.ErrBalanceModificationTransactionCannotAddWhenNotEmpty
-		}
-
 		transaction.RelatedAccountId = transaction.AccountId
-		transaction.RelatedAccountAmount = transaction.Amount - sourceAccount.Balance
+		transaction.RelatedAccountAmount = transaction.Amount // Amount IS the delta
 	} else { // Not allow to add transaction before balance modification transaction
 		otherTransactionExists := false
 

src/router/mobile.ts

@@ -128,9 +128,6 @@ const routes: Router.RouteParameters[] = [
         path: '/',
         async: asyncResolve(HomePage),
         beforeEnter: [checkLogin],
-        options: {
-            animate: false,
-        }
     },
     {
         path: '/login',
@@ -160,7 +157,6 @@ const routes: Router.RouteParameters[] = [
         path: '/transaction/list',
         async: asyncResolve(TransactionListPage),
         beforeEnter: [checkLogin],
-        options: { animate: false }
     },
     {
         path: '/transaction/filter/amount',
@@ -186,7 +182,6 @@ const routes: Router.RouteParameters[] = [
         path: '/account/list',
         async: asyncResolve(AccountListPage),
         beforeEnter: [checkLogin],
-        options: { animate: false }
     },
     {
         path: '/account/add',
@@ -212,7 +207,6 @@ const routes: Router.RouteParameters[] = [
         path: '/statistic/transaction',
         async: asyncResolve(StatisticsTransactionPage),
         beforeEnter: [checkLogin],
-        options: { animate: false }
     },
     {
         path: '/statistic/settings',
@@ -263,7 +257,6 @@ const routes: Router.RouteParameters[] = [
         path: '/settings',
         async: asyncResolve(SettingsPage),
         beforeEnter: [checkLogin],
-        options: { animate: false }
     },
     {
         path: '/app_lock',

src/stores/transaction.ts

@@ -54,11 +54,12 @@ import {
     splitItemsToMap,
     countSplitItems
 } from '@/lib/common.ts';
-import { parseDateTimeFromUnixTimeWithTimezoneOffset } from '@/lib/datetime.ts';
+import { parseDateTimeFromUnixTimeWithTimezoneOffset, getCurrentUnixTime, getTimezoneOffsetMinutes } from '@/lib/datetime.ts';
 import { getAmountWithDecimalNumberCount } from '@/lib/numeral.ts';
 import { getCurrencyFraction } from '@/lib/currency.ts';
 import { getFirstVisibleCategoryId } from '@/lib/category.ts';
 import services, { type ApiResponsePromise } from '@/lib/services.ts';
+import { generateRandomUUID } from '@/lib/misc.ts';
 import logger from '@/lib/logger.ts';
 
 export interface TransactionListPartialFilter {
@@ -1166,6 +1167,59 @@ export const useTransactionsStore = defineStore('transactions', () => {
         });
     }
 
+    function adjustAccountBalance({ accountId, targetBalance, currentBalance }: { accountId: string, targetBalance: number, currentBalance: number }): Promise<boolean> {
+        return new Promise((resolve, reject) => {
+            const now = getCurrentUnixTime();
+            const utcOffset = getTimezoneOffsetMinutes(now);
+            const delta = targetBalance - currentBalance;
+
+            if (delta === 0) {
+                resolve(true);
+                return;
+            }
+
+            services.addTransaction({
+                type: TransactionType.ModifyBalance,
+                categoryId: '0',
+                time: now,
+                utcOffset: utcOffset,
+                sourceAccountId: accountId,
+                destinationAccountId: '0',
+                sourceAmount: delta,
+                destinationAmount: 0,
+                hideAmount: false,
+                tagIds: [],
+                pictureIds: [],
+                comment: '',
+                clientSessionId: generateRandomUUID()
+            }).then(response => {
+                const data = response.data;
+
+                if (!data || !data.success || !data.result) {
+                    reject({ message: 'Unable to adjust account balance' });
+                    return;
+                }
+
+                const accountsStore = useAccountsStore();
+                accountsStore.loadAllAccounts({ force: true }).then(() => {
+                    updateTransactionListInvalidState(true);
+                    resolve(true);
+                }).catch(() => {
+                    updateTransactionListInvalidState(true);
+                    resolve(true);
+                });
+            }).catch(error => {
+                if (error.response && error.response.data && error.response.data.errorMessage) {
+                    reject({ error: error.response.data });
+                } else if (!error.processed) {
+                    reject({ message: 'Unable to adjust account balance' });
+                } else {
+                    reject(error);
+                }
+            });
+        });
+    }
+
     function deleteTransaction({ transaction, defaultCurrency, beforeResolve }: { transaction: TransactionInfoResponse, defaultCurrency: string, beforeResolve?: BeforeResolveFunction }): Promise<boolean> {
         return new Promise((resolve, reject) => {
             services.deleteTransaction({
@@ -1472,6 +1526,7 @@ export const useTransactionsStore = defineStore('transactions', () => {
         getReconciliationStatements,
         getTransaction,
         saveTransaction,
+        adjustAccountBalance,
         moveAllTransactionsBetweenAccounts,
         deleteTransaction,
         recognizeReceiptImage,

src/views/desktop/accounts/list/dialogs/EditDialog.vue

@@ -131,7 +131,7 @@
                                 </v-col>
                                 <v-col cols="12" :md="(!editAccountId || isNewAccount(selectedAccount)) && selectedAccount.balance ? 6 : 12"
                                        v-if="account.type === AccountType.SingleAccount.type || currentAccountIndex >= 0">
-                                    <amount-input :disabled="loading || submitting || (!!editAccountId && !isNewAccount(selectedAccount))"
+                                    <amount-input :disabled="loading || submitting"
                                                   :persistent-placeholder="true"
                                                   :currency="selectedAccount.currency"
                                                   :show-currency="true"
@@ -204,6 +204,9 @@ import { useAccountEditPageBase } from '@/views/base/accounts/AccountEditPageBas
 
 import { useUserStore } from '@/stores/user.ts';
 import { useAccountsStore } from '@/stores/account.ts';
+import { useTransactionsStore } from '@/stores/transaction.ts';
+
+import { KnownErrorCode } from '@/consts/api.ts';
 
 import { itemAndIndex } from '@/core/base.ts';
 import { AccountType } from '@/core/account.ts';
@@ -254,6 +257,7 @@ const {
 
 const userStore = useUserStore();
 const accountsStore = useAccountsStore();
+const transactionsStore = useTransactionsStore();
 
 const confirmDialog = useTemplateRef<ConfirmDialogType>('confirmDialog');
 const snackbar = useTemplateRef<SnackBarType>('snackbar');
@@ -261,6 +265,7 @@ const snackbar = useTemplateRef<SnackBarType>('snackbar');
 const showState = ref<boolean>(false);
 const activeTab = ref<string>('account');
 const currentAccountIndex = ref<number>(-1);
+const originalBalances = ref<Map<string, number>>(new Map());
 
 const selectedAccount = computed<Account>(() => {
     if (currentAccountIndex.value < 0) {
@@ -310,6 +315,15 @@ function open(options?: { id?: string, currentAccount?: Account, category?: numb
             accountId: editAccountId.value
         }).then(response => {
             setAccount(response);
+            originalBalances.value.clear();
+            if (account.value.id) {
+                originalBalances.value.set(account.value.id, account.value.balance);
+            }
+            for (const subAccount of subAccounts.value) {
+                if (subAccount.id) {
+                    originalBalances.value.set(subAccount.id, subAccount.balance);
+                }
+            }
             loading.value = false;
         }).catch(error => {
             loading.value = false;
@@ -337,7 +351,7 @@ function open(options?: { id?: string, currentAccount?: Account, category?: numb
     });
 }
 
-function save(): void {
+async function save(): Promise<void> {
     const problemMessage = inputEmptyProblemMessage.value;
 
     if (problemMessage) {
@@ -347,6 +361,30 @@ function save(): void {
 
     submitting.value = true;
 
+    // Collect balance adjustments needed for existing accounts
+    let balanceChanged = false;
+    if (editAccountId.value) {
+        const allAccounts = [account.value, ...subAccounts.value];
+        for (const acc of allAccounts) {
+            if (!acc.id || isNewAccount(acc)) continue;
+            const origBalance = originalBalances.value.get(acc.id);
+            if (origBalance !== undefined && acc.balance !== origBalance) {
+                balanceChanged = true;
+                try {
+                    await transactionsStore.adjustAccountBalance({
+                        accountId: acc.id,
+                        targetBalance: acc.balance,
+                        currentBalance: origBalance
+                    });
+                } catch (error: unknown) {
+                    submitting.value = false;
+                    snackbar.value?.showError(error as { message: string });
+                    return;
+                }
+            }
+        }
+    }
+
     accountsStore.saveAccount({
         account: account.value,
         subAccounts: subAccounts.value,
@@ -366,6 +404,12 @@ function save(): void {
     }).catch(error => {
         submitting.value = false;
 
+        if (balanceChanged && error.error && error.error.errorCode === KnownErrorCode.NothingWillBeUpdated) {
+            resolveFunc?.({ message: 'You have saved this account' });
+            showState.value = false;
+            return;
+        }
+
         if (!error.processed) {
             snackbar.value?.showError(error);
         }

src/views/desktop/transactions/list/dialogs/EditDialog.vue

@@ -211,6 +211,7 @@
                                                                    :disabled="loading || submitting || !allVisibleAccounts.length || (mode === TransactionEditPageMode.Edit && transaction.type === TransactionType.ModifyBalance)"
                                                                    :enable-filter="true" :filter-placeholder="tt('Find account')" :filter-no-items-text="tt('No available account')"
                                                                    :custom-selection-primary-text="sourceAccountName"
+                                                                   :custom-selection-secondary-text="sourceAccountBalanceDisplay"
                                                                    :label="tt(sourceAccountTitle)"
                                                                    :placeholder="tt(sourceAccountTitle)"
                                                                    :items="allVisibleCategorizedAccounts"
@@ -236,6 +237,7 @@
                                                                    :disabled="loading || submitting || !allVisibleAccounts.length"
                                                                    :enable-filter="true" :filter-placeholder="tt('Find account')" :filter-no-items-text="tt('No available account')"
                                                                    :custom-selection-primary-text="destinationAccountName"
+                                                                   :custom-selection-secondary-text="destinationAccountBalanceDisplay"
                                                                    :label="tt('Destination Account')"
                                                                    :placeholder="tt('Destination Account')"
                                                                    :items="allVisibleCategorizedAccounts"
@@ -510,6 +512,7 @@ import { SUPPORTED_IMAGE_EXTENSIONS } from '@/consts/file.ts';
 import { TransactionTemplate } from '@/models/transaction_template.ts';
 import type { TransactionPictureInfoBasicResponse } from '@/models/transaction_picture_info.ts';
 import { Transaction } from '@/models/transaction.ts';
+import type { Account } from '@/models/account.ts';
 
 import {
     getTimezoneOffsetMinutes,
@@ -567,7 +570,7 @@ const props = defineProps<{
     show?: boolean;
 }>();
 
-const { tt } = useI18n();
+const { tt, formatAmountToLocalizedNumeralsWithCurrency } = useI18n();
 
 const {
     mode,
@@ -644,6 +647,31 @@ const initOptions = ref<TransactionEditOptions | undefined>(undefined);
 let resolveFunc: ((response?: TransactionEditResponse) => void) | null = null;
 let rejectFunc: ((reason?: unknown) => void) | null = null;
 
+function getAccountBalanceDisplay(account: Account): string {
+    if (account.creditLimit) {
+        const outstanding = -account.balance;
+        const available = account.creditLimit + account.balance;
+        return formatAmountToLocalizedNumeralsWithCurrency(outstanding, account.currency)
+            + ' · ' + tt('Available') + ' ' + formatAmountToLocalizedNumeralsWithCurrency(available, account.currency);
+    }
+    const displayBalance = account.isLiability ? -account.balance : account.balance;
+    return formatAmountToLocalizedNumeralsWithCurrency(displayBalance, account.currency);
+}
+
+const sourceAccountBalanceDisplay = computed<string>(() => {
+    if (!transaction.value.sourceAccountId) return '';
+    const account = allVisibleAccounts.value.find(a => a.id === transaction.value.sourceAccountId);
+    if (!account) return '';
+    return getAccountBalanceDisplay(account);
+});
+
+const destinationAccountBalanceDisplay = computed<string>(() => {
+    if (!transaction.value.destinationAccountId) return '';
+    const account = allVisibleAccounts.value.find(a => a.id === transaction.value.destinationAccountId);
+    if (!account) return '';
+    return getAccountBalanceDisplay(account);
+});
+
 const sourceAmountColor = computed<string | undefined>(() => {
     if (transaction.value.type === TransactionType.Expense) {
         return 'expense';

src/views/mobile/accounts/EditPage.vue

@@ -222,7 +222,6 @@
             <f7-list-item
                 link="#" no-chevron
                 class="list-item-with-header-and-title"
-                :class="{ 'disabled': editAccountId }"
                 :header="account.isLiability ? tt('Account Outstanding Balance') : tt('Account Balance')"
                 :title="formatAccountDisplayBalance(account)"
                 @click="accountContext.showBalanceSheet = true"
@@ -565,11 +564,13 @@ import { useI18nUIComponents, showLoading, hideLoading } from '@/lib/ui/mobile.t
 import { useAccountEditPageBase } from '@/views/base/accounts/AccountEditPageBase.ts';
 
 import { useAccountsStore } from '@/stores/account.ts';
+import { useTransactionsStore } from '@/stores/transaction.ts';
 
 import { itemAndIndex } from '@/core/base.ts';
 import type { LocalizedCurrencyInfo } from '@/core/currency.ts';
 import { AccountType } from '@/core/account.ts';
 import { ALL_ACCOUNT_ICONS } from '@/consts/icon.ts';
+import { KnownErrorCode } from '@/consts/api.ts';
 import { ALL_ACCOUNT_COLORS } from '@/consts/color.ts';
 import { TRANSACTION_MIN_AMOUNT, TRANSACTION_MAX_AMOUNT } from '@/consts/transaction.ts';
 import type { Account } from '@/models/account.ts';
@@ -631,6 +632,7 @@ const {
 } = useAccountEditPageBase();
 
 const accountsStore = useAccountsStore();
+const transactionsStore = useTransactionsStore();
 
 const DEFAULT_ACCOUNT_CONTEXT: AccountContext = {
     showIconSelectionSheet: false,
@@ -643,6 +645,8 @@ const DEFAULT_ACCOUNT_CONTEXT: AccountContext = {
     balanceDateTimeSheetMode: 'time'
 };
 
+const originalBalance = ref<number>(0);
+
 const accountContext = ref<AccountContext>(Object.assign({}, DEFAULT_ACCOUNT_CONTEXT));
 const subAccountContexts = ref<AccountContext[]>([]);
 const subAccountToDelete = ref<Account | null>(null);
@@ -697,6 +701,7 @@ function init(): void {
             accountId: editAccountId.value
         }).then(response => {
             setAccount(response);
+            originalBalance.value = response.balance;
             subAccountContexts.value = [];
 
             for (let i = 0; i < subAccounts.value.length; i++) {
@@ -729,22 +734,43 @@ function save(): void {
     submitting.value = true;
     showLoading(() => submitting.value);
 
-    accountsStore.saveAccount({
+    const balanceChanged = !!editAccountId.value && account.value.balance !== originalBalance.value;
-        account: account.value,
+    const adjustPromise = balanceChanged
-        subAccounts: subAccounts.value,
+        ? transactionsStore.adjustAccountBalance({ accountId: editAccountId.value!, targetBalance: account.value.balance, currentBalance: originalBalance.value })
-        isEdit: !!editAccountId.value,
+        : Promise.resolve(true);
-        clientSessionId: clientSessionId.value
-    }).then(() => {
-        submitting.value = false;
-        hideLoading();
 
-        if (!editAccountId.value) {
+    adjustPromise.then(() => {
-            showToast('You have added a new account');
+        accountsStore.saveAccount({
-        } else {
+            account: account.value,
-            showToast('You have saved this account');
+            subAccounts: subAccounts.value,
-        }
+            isEdit: !!editAccountId.value,
+            clientSessionId: clientSessionId.value
+        }).then(() => {
+            submitting.value = false;
+            hideLoading();
 
-        router.back();
+            if (!editAccountId.value) {
+                showToast('You have added a new account');
+            } else {
+                showToast('You have saved this account');
+            }
+
+            router.back();
+        }).catch(error => {
+            submitting.value = false;
+            hideLoading();
+
+            if (balanceChanged && error.error && error.error.errorCode === KnownErrorCode.NothingWillBeUpdated) {
+                // Balance was adjusted but other fields unchanged — treat as success
+                showToast('You have saved this account');
+                router.back();
+                return;
+            }
+
+            if (!error.processed) {
+                showToast(error.message || error);
+            }
+        });
     }).catch(error => {
         submitting.value = false;
         hideLoading();

src/views/mobile/transactions/EditPage.vue

@@ -195,6 +195,7 @@
                 :class="{ 'disabled': !allVisibleAccounts.length || (mode === TransactionEditPageMode.Edit && transaction.type === TransactionType.ModifyBalance), 'readonly': mode === TransactionEditPageMode.View }"
                 :header="tt(sourceAccountTitle)"
                 :title="sourceAccountName"
+                :footer="sourceAccountBalanceDisplay"
                 @click="showSourceAccountSheet = true"
             >
                 <two-column-list-item-selection-sheet primary-key-field="id" primary-value-field="category"
@@ -218,6 +219,7 @@
                 :class="{ 'disabled': !allVisibleAccounts.length, 'readonly': mode === TransactionEditPageMode.View }"
                 :header="tt('Destination Account')"
                 :title="destinationAccountName"
+                :footer="destinationAccountBalanceDisplay"
                 v-if="transaction.type === TransactionType.Transfer"
                 @click="showDestinationAccountSheet = true"
             >
@@ -523,6 +525,7 @@ import {
 import { useSettingsStore } from '@/stores/setting.ts';
 import { useUserStore } from '@/stores/user.ts';
 import { useAccountsStore } from '@/stores/account.ts';
+import type { Account } from '@/models/account.ts';
 import { useTransactionCategoriesStore } from '@/stores/transactionCategory.ts';
 import { useTransactionTagsStore } from '@/stores/transactionTag.ts';
 import { useTransactionsStore } from '@/stores/transaction.ts';
@@ -572,7 +575,8 @@ const {
     formatDateTimeToLongDate,
     formatDateTimeToLongTime,
     formatGregorianTextualYearMonthDayToLongDate,
-    parseAmountFromLocalizedNumerals
+    parseAmountFromLocalizedNumerals,
+    formatAmountToLocalizedNumeralsWithCurrency
 } = useI18n();
 const { showAlert, showConfirm, showToast, routeBackOnError } = useI18nUIComponents();
 
@@ -679,6 +683,31 @@ const quickSaveButtonFloatingPosition = computed<string>(() => {
     }
 });
 
+function getAccountBalanceDisplay(account: Account): string {
+    if (account.creditLimit) {
+        const outstanding = -account.balance;
+        const available = account.creditLimit + account.balance;
+        return formatAmountToLocalizedNumeralsWithCurrency(outstanding, account.currency)
+            + ' · ' + tt('Available') + ' ' + formatAmountToLocalizedNumeralsWithCurrency(available, account.currency);
+    }
+    const displayBalance = account.isLiability ? -account.balance : account.balance;
+    return formatAmountToLocalizedNumeralsWithCurrency(displayBalance, account.currency);
+}
+
+const sourceAccountBalanceDisplay = computed<string>(() => {
+    if (!transaction.value.sourceAccountId) return '';
+    const account = allVisibleAccounts.value.find(a => a.id === transaction.value.sourceAccountId);
+    if (!account) return '';
+    return getAccountBalanceDisplay(account);
+});
+
+const destinationAccountBalanceDisplay = computed<string>(() => {
+    if (!transaction.value.destinationAccountId) return '';
+    const account = allVisibleAccounts.value.find(a => a.id === transaction.value.destinationAccountId);
+    if (!account) return '';
+    return getAccountBalanceDisplay(account);
+});
+
 const sourceAmountClass = computed<Record<string, boolean>>(() => {
     const classes: Record<string, boolean> = {
         'readonly': mode.value === TransactionEditPageMode.View,