feat(database): 优化数据库编辑体验 (#10)

改进关系型数据库表格编辑，增加新增、修改、删除和恢复等行状态展示，保存时按主键生成对应 SQL。

优化 MongoDB 文档编辑，默认保留 JSON 阅读视图，点击 Edit 后使用递归 JSON 结构编辑器，支持嵌套对象和数组分层编辑，边界更清晰。

同步中英文界面文案。

验证：pnpm build；git diff --check。

src/i18n/locales/en.ts

@@ -70,6 +70,13 @@ export default {
     dismiss: "Dismiss",
     addRow: "Add Row",
     deleteRow: "Delete Row",
+    restoreRow: "Restore Row",
+    rowState: "State",
+    statusClean: "Clean",
+    statusNew: "New",
+    statusEdited: "Edited",
+    statusDeleted: "Deleted",
+    pendingChanges: "{count} pending",
     rowsPerPageShort: " rows",
   },
   welcome: {
@@ -153,6 +160,19 @@ export default {
     members: "{count} members",
     noExpiry: "no expiry",
   },
+  mongo: {
+    documents: "{count} documents",
+    addField: "Add Field",
+    deleteField: "Delete Field",
+    field: "Field",
+    value: "Value",
+    fieldPlaceholder: "Field name",
+    emptyCollection: "Empty collection",
+    selectDocument: "Select a document",
+    readonlyId: "_id is read-only",
+    invalidJsonValue: "This cell is not a valid JSON value",
+    duplicateField: "Duplicate field name: {field}",
+  },
   history: {
     title: "History",
     search: "Search history...",

src/i18n/locales/zh-CN.ts

@@ -70,6 +70,13 @@ export default {
     dismiss: "关闭",
     addRow: "新增行",
     deleteRow: "删除行",
+    restoreRow: "恢复行",
+    rowState: "状态",
+    statusClean: "未改",
+    statusNew: "新增",
+    statusEdited: "已改",
+    statusDeleted: "删除",
+    pendingChanges: "{count} 项待保存",
     rowsPerPageShort: " 行/页",
   },
   welcome: {
@@ -151,6 +158,19 @@ export default {
     members: "{count} 个成员",
     noExpiry: "永不过期",
   },
+  mongo: {
+    documents: "{count} 个文档",
+    addField: "添加字段",
+    deleteField: "删除字段",
+    field: "字段",
+    value: "值",
+    fieldPlaceholder: "字段名",
+    emptyCollection: "空集合",
+    selectDocument: "选择一个文档",
+    readonlyId: "_id 只读",
+    invalidJsonValue: "当前单元格不是合法 JSON 值",
+    duplicateField: "字段名重复：{field}",
+  },
   history: {
     title: "查询历史",
     search: "搜索历史...",