feat: add connection group management and sidebar layout persistence

src/i18n/locales/en.ts

@@ -233,6 +233,19 @@ export default {
     cancel: "Cancel",
     refresh: "Analyze Again",
   },
+  connectionGroup: {
+    createGroup: "New Group",
+    groupNamePlaceholder: "Group name",
+    renameGroup: "Rename Group",
+    deleteGroup: "Delete Group",
+    moveToGroup: "Move to Group",
+    moveToNewGroup: "Move to New Group",
+    ungrouped: "Ungrouped",
+    newGroup: "New Group...",
+    newGroupDefault: "New Group",
+    deleteGroupConfirmTitle: "Delete Group",
+    deleteGroupConfirmMessage: "Delete group \"{name}\"? Connections inside will be moved to the top level.",
+  },
   databaseSearch: {
     title: "Search Database",
     open: "Search Database",
@@ -271,6 +284,9 @@ export default {
     exportSuccess: "Connections exported successfully",
     importSuccess: "Imported {count} connection(s)",
     importNone: "No new connections to import",
+    importLayoutConfirm: "The imported file contains connection groups. Apply them?",
+    importLayoutTitle: "Import Groups",
+    importLayoutApply: "Apply",
   },
   ai: {
     placeholder: "Describe your query in natural language...",

src/i18n/locales/zh-CN.ts

@@ -233,6 +233,19 @@ export default {
     cancel: "取消读取",
     refresh: "重新分析",
   },
+  connectionGroup: {
+    createGroup: "新建分组",
+    groupNamePlaceholder: "分组名称",
+    renameGroup: "重命名分组",
+    deleteGroup: "删除分组",
+    moveToGroup: "移至分组",
+    moveToNewGroup: "移至新分组",
+    ungrouped: "取消分组",
+    newGroup: "新建分组...",
+    newGroupDefault: "新分组",
+    deleteGroupConfirmTitle: "删除分组",
+    deleteGroupConfirmMessage: "删除分组「{name}」？其中的连接将移到顶层。",
+  },
   databaseSearch: {
     title: "在数据库中查找",
     open: "在数据库中查找",
@@ -271,6 +284,9 @@ export default {
     exportSuccess: "连接配置导出成功",
     importSuccess: "已导入 {count} 个连接",
     importNone: "没有新的连接需要导入",
+    importLayoutConfirm: "导入文件包含连接分组信息，是否一并应用？",
+    importLayoutTitle: "导入分组",
+    importLayoutApply: "应用",
   },
   ai: {
     placeholder: "描述你想查什么...",