fix: 修复域能管理操作无响应及公户账务错误

- 修复前端 energy.js api.post/get 回调调用为 Promise 链式调用，解决操作无响应
- 修复 AdminAdjust system_operation 模式错误扣减公户余额，现不碰公户
- 修复 AdminAdjust admin_transfer 模式公户按用户数量扣款（amount * len(userIDs)）
- 修复 AdminAdjust 余额检查移入事务内并加行锁（SELECT FOR UPDATE），防 TOCTOU 竞态
- FundStore 接口及 FundRepo 新增 LockAndGetBalance 方法

templates/admin/static/js/energy.js

@@ -46,13 +46,12 @@
                 amount: amount,
                 description: desc,
                 mode: mode
-            }, function (res) {
+            }).then(function (res) {
                 if (submitBtn) submitBtn.disabled = false;
                 if (res.success) {
                     showMsg(msgEl, res.message || '调整成功', 'success');
-                    // 刷新公户余额
                     setTimeout(function () {
-                        api.get('/api/admin/energy/fund-balance', function (r) {
+                        api.get('/api/admin/energy/fund-balance').then(function (r) {
                             if (r.success && r.data) {
                                 var balEl = document.getElementById('fund-balance');
                                 if (balEl) {
@@ -76,7 +75,7 @@
 
         function loadLogs() {
             var logType = typeFilter ? typeFilter.value : '';
-            api.get('/api/admin/energy/logs?page=' + page + '&page_size=20&type=' + encodeURIComponent(logType), function (res) {
+            api.get('/api/admin/energy/logs?page=' + page + '&page_size=20&type=' + encodeURIComponent(logType)).then(function (res) {
                 if (!res.success) return;
                 renderLogTable('energy-log-tbody', res.data.items, function (item) {
                     return [
@@ -112,7 +111,7 @@
 
         function loadLogs() {
             var logType = typeFilter ? typeFilter.value : '';
-            api.get('/api/admin/energy/fund-logs?page=' + page + '&page_size=20&type=' + encodeURIComponent(logType), function (res) {
+            api.get('/api/admin/energy/fund-logs?page=' + page + '&page_size=20&type=' + encodeURIComponent(logType)).then(function (res) {
                 if (!res.success) return;
                 renderLogTable('fund-log-tbody', res.data.items, function (item) {
                     return [