fix(web): 系统设置 CRUD 修复 — version 乐观锁 + 语言字段映射 + JSON 显示

- API 层所有 Info/Request 接口添加 version 字段，update 函数传递 version
- delete 函数改为 client.delete(url, { data: { version } }) 发送 JSON body
- LanguageInfo.enabled → is_active，匹配后端 LanguageResp 字段名
- LanguageManager 编辑弹窗简化为只读详情（后端仅支持 is_active 切换）
- SystemSettings 设置值显示改用 JSON.stringify 而非 String()
- SystemSettings updateSetting 发送解析后的 JSON 对象而非字符串

apps/web/src/pages/settings/DictionaryManager.tsx

@@ -66,7 +66,7 @@ export default function DictionaryManager() {
   const handleDictSubmit = async (values: CreateDictionaryRequest) => {
     try {
       if (editDict) {
-        await updateDictionary(editDict.id, values);
+        await updateDictionary(editDict.id, { ...values, version: editDict.version });
         message.success('字典更新成功');
       } else {
         await createDictionary(values);
@@ -82,9 +82,9 @@ export default function DictionaryManager() {
     }
   };
 
-  const handleDeleteDict = async (id: string) => {
+  const handleDeleteDict = async (id: string, version: number) => {
     try {
-      await deleteDictionary(id);
+      await deleteDictionary(id, version);
       message.success('字典已删除');
       fetchDictionaries();
     } catch {
@@ -139,7 +139,7 @@ export default function DictionaryManager() {
     if (!activeDictId) return;
     try {
       if (editItem) {
-        await updateDictionaryItem(activeDictId, editItem.id, values as UpdateDictionaryItemRequest);
+        await updateDictionaryItem(activeDictId, editItem.id, { ...values, version: editItem.version } as UpdateDictionaryItemRequest);
         message.success('字典项更新成功');
       } else {
         await createDictionaryItem(activeDictId, values);
@@ -155,9 +155,9 @@ export default function DictionaryManager() {
     }
   };
 
-  const handleDeleteItem = async (dictId: string, itemId: string) => {
+  const handleDeleteItem = async (dictId: string, itemId: string, version: number) => {
     try {
-      await deleteDictionaryItem(dictId, itemId);
+      await deleteDictionaryItem(dictId, itemId, version);
       message.success('字典项已删除');
       fetchDictionaries();
     } catch {
@@ -196,7 +196,7 @@ export default function DictionaryManager() {
           </Button>
           <Popconfirm
             title="确定删除此字典？"
-            onConfirm={() => handleDeleteDict(record.id)}
+            onConfirm={() => handleDeleteDict(record.id, record.version)}
           >
             <Button size="small" danger>
               删除
@@ -232,7 +232,7 @@ export default function DictionaryManager() {
           </Button>
           <Popconfirm
             title="确定删除此字典项？"
-            onConfirm={() => handleDeleteItem(dictId, record.id)}
+            onConfirm={() => handleDeleteItem(dictId, record.id, record.version)}
           >
             <Button size="small" danger>
               删除