fix(admin,api): 上分超额提示而非静默截断，并返回中文业务错误

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/admin/src/views/agent/Players.vue

@@ -143,6 +143,20 @@ const transferAmountDisabled = computed(() => {
   return max === 0;
 });
 
+/** 勿用 el-input-number :max，否则会静默截断到上限 */
+const transferAmountExceedsCap = computed(() => {
+  const max = transferAmountRange.value.max;
+  if (max === undefined) return false;
+  return transferAmount.value > max;
+});
+
+const transferAmountCapError = computed(() => {
+  if (!transferAmountExceedsCap.value) return '';
+  return transferType.value === 'deposit'
+    ? t('err.insufficient_credit')
+    : t('transfer.context.withdraw_exceed');
+});
+
 /* ─── Init ─── */
 onMounted(async () => {
   await loadProfile();
@@ -818,17 +832,20 @@ function statusTagType(s: string) {
         <el-form-item :label="t('common.col_id')">
           <span>{{ transferTarget?.id }}</span>
         </el-form-item>
-        <el-form-item :label="t('user.field.amount')">
+        <el-form-item :label="t('user.field.amount')" :error="transferAmountCapError">
           <el-input-number
             v-model="transferAmount"
-            :min="transferAmountRange.min" :max="transferAmountRange.max"
-            :disabled="transferAmountDisabled" :step="10" :precision="2" style="width: 100%"
+            :min="transferAmountRange.min"
+            :disabled="transferAmountDisabled"
+            :step="10"
+            :precision="2"
+            style="width: 100%"
           />
         </el-form-item>
       </el-form>
       <template #footer>
         <el-button @click="transferVisible = false">{{ t('common.cancel') }}</el-button>
-        <el-button type="primary" :loading="transferLoading" :disabled="transferAmountDisabled" @click="submitTransfer">{{ t('common.confirm') }}</el-button>
+        <el-button type="primary" :loading="transferLoading" :disabled="transferAmountDisabled || transferAmountExceedsCap" @click="submitTransfer">{{ t('common.confirm') }}</el-button>
       </template>
     </el-dialog>