feat: support memory import and export (#1521)

* feat: support memory import and export

* fix(memory): address review feedback

* style: format memory settings page

---------

Co-authored-by: Willem Jiang <willem.jiang@gmail.com>

frontend/src/core/i18n/locales/zh-CN.ts

@@ -1,4 +1,4 @@
-import {
+import {
   CompassIcon,
   GraduationCapIcon,
   ImageIcon,
@@ -44,6 +44,7 @@ export const zhCN: Translations = {
     save: "保存",
     install: "安装",
     create: "创建",
+    import: "导入",
     export: "导出",
     exportAsMarkdown: "导出为 Markdown",
     exportAsJSON: "导出为 JSON",
@@ -299,6 +300,15 @@ export const zhCN: Translations = {
         "DeerFlow 会在后台不断从你的对话中自动学习。这些记忆能帮助 DeerFlow 更好地理解你，并提供更个性化的体验。",
       empty: "暂无可展示的记忆数据。",
       rawJson: "原始 JSON",
+      exportButton: "导出记忆",
+      exportSuccess: "记忆已导出",
+      importButton: "导入记忆",
+      importConfirmTitle: "导入记忆？",
+      importConfirmDescription: "这会用选中的 JSON 备份覆盖当前记忆。",
+      importFileLabel: "已选择文件",
+      importInvalidFile: "读取记忆文件失败，请选择有效的 JSON 导出文件。",
+      importSuccess: "记忆已导入",
+      manualFactSource: "手动添加",
       addFact: "添加事实",
       addFactTitle: "添加记忆事实",
       editFactTitle: "编辑记忆事实",
@@ -322,10 +332,9 @@ export const zhCN: Translations = {
       factSave: "保存事实",
       factValidationContent: "事实内容不能为空。",
       factValidationConfidence: "置信度必须是 0 到 1 之间的数字。",
-      manualFactSource: "手动添加",
       noFacts: "还没有保存的事实。",
       summaryReadOnly:
-        "摘要分区当前仍为只读。你可以在下方添加、编辑或删除事实，或清空全部记忆。",
+        "摘要分区当前仍为只读。现在你可以清空全部记忆或删除单条事实。",
       memoryFullyEmpty: "还没有保存任何记忆。",
       factPreviewLabel: "即将删除的事实",
       searchPlaceholder: "搜索记忆",