feat(phone-image): 對齊持久化+防抖自動保存

- saveImages新增mergedConfig合併pageAlignments
- 新增debouncedSaveConfig(): 300ms防抖自動保存
- 對齊change handler調用refreshDomPage+debouncedSaveConfig
- 重置按鈕逐頁刷新DOM+防抖保存
- HTML新增phone-image:save-config事件監聽器
- currentConfig初始化正確同步pageAlignments

view/admin/post/phone_image.html

@@ -330,6 +330,7 @@
             currentConfig.watermark = initConfig.watermark;
             currentConfig.fontScale = initConfig.fontScale;
             currentConfig.tableFontScale = initConfig.tableFontScale;
+            currentConfig.pageAlignments = initConfig.pageAlignments || {};
 
             // ========== wangeditor 初始化 ==========
             var E = window.wangEditor;
@@ -694,8 +695,17 @@
                 currentConfig.pageAlignments = {};
                 if (typeof PhoneImageEngine !== 'undefined') {
                     PhoneImageEngine.updateConfig({ pageAlignments: {} });
+                    // 逐页重置对齐并刷新DOM
+                    var totalPages = $('.preview-thumb-item').length;
+                    for (var i = 0; i < totalPages; i++) {
+                        PhoneImageEngine.setPageAlignment(i + 1, 'top');
+                        PhoneImageEngine.refreshDomPage(i);
+                    }
+                    // 重置所有select控件
+                    $('.thumb-alignment-select').val('top');
+                    // 防抖自动保存
+                    PhoneImageEngine.debouncedSaveConfig();
                 }
-                doRender();
                 layer.msg('已重置所有页面对齐');
             });
 
@@ -733,6 +743,28 @@
                 }
             }
 
+            // ========== 引擎内部防抖保存事件监听 ==========
+            $(document).on('phone-image:save-config', function () {
+                // 同步pageAlignments到currentConfig
+                currentConfig.pageAlignments = PhoneImageEngine.updateConfig.call.length ? currentConfig.pageAlignments : currentConfig.pageAlignments;
+                updateSaveState('saving');
+                PhoneImageLogPanel.log('自动保存对齐配置...', 'info');
+                PhoneImageEngine.saveConfig(postData.postId, {
+                    size: currentConfig.size,
+                    watermark: currentConfig.watermark,
+                    fontScale: currentConfig.fontScale || 1,
+                    tableFontScale: currentConfig.tableFontScale || 1,
+                    content_html: PhoneImageEngine.getContentHtml()
+                }, saveConfigUrl).then(function(data) {
+                    if (data.output_id) lastOutputId = data.output_id;
+                    PhoneImageLogPanel.log('对齐配置已保存', 'success');
+                    updateSaveState('saved');
+                }).catch(function(err) {
+                    PhoneImageLogPanel.log('对齐配置保存失败: ' + err, 'error');
+                    updateSaveState('error');
+                });
+            });
+
             // ========== 保存状态指示器 ==========
             $('<span id="save-state" style="font-size:12px;color:#999;">已保存</span>').insertAfter('#btn-generate');