fix: 翻译保存修复 — 去掉version检查 + 保存后重新加载数据

根因: PUT /api/recipes/{id} 传了 version 字段导致 409 冲突
（version 不匹配时后端拒绝），但修改 en_name 不需要 version 检查

修复:
- 保存 recipe en_name 时不传 version（后端只在 version 存在时才检查）
- 保存后 loadRecipes + loadOils 刷新数据
- 下次打开配方卡片读到最新的 en_name
- 精油价目页也同步更新（loadOils 刷新 oilsMeta.enName）

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/components/RecipeDetailOverlay.vue

@@ -611,16 +611,17 @@ async function applyTranslation() {
   showTranslationEditor.value = false
   let saved = 0
 
-  // 1. Save recipe English name
+  // 1. Save recipe English name (no version check — only updating en_name)
   if (recipe.value._id && customRecipeNameEn.value) {
     try {
       await api.put(`/api/recipes/${recipe.value._id}`, {
         en_name: customRecipeNameEn.value,
-        version: recipe.value._version,
       })
       recipe.value.en_name = customRecipeNameEn.value
       saved++
-    } catch {}
+    } catch (e) {
+      console.error('Save recipe en_name failed:', e)
+    }
   }
 
   // 2. Save each oil's English name to oils table (syncs with oil reference page)
@@ -639,9 +640,16 @@ async function applyTranslation() {
     }
   }
 
-  if (saved > 0) ui.showToast(`翻译已保存（${saved}项）` + (failed > 0 ? `，${failed}项失败` : ''))
-  else if (failed > 0) ui.showToast(`保存失败 ${failed} 项`)
-  else ui.showToast('没有修改')
+  if (saved > 0) {
+    ui.showToast(`翻译已保存（${saved}项）` + (failed > 0 ? `，${failed}项失败` : ''))
+    // Reload data so next open shows updated names
+    recipesStore.loadRecipes()
+    oilsStore.loadOils()
+  } else if (failed > 0) {
+    ui.showToast(`保存失败 ${failed} 项`)
+  } else {
+    ui.showToast('没有修改')
+  }
 
   cardImageUrl.value = null
   nextTick(() => generateCardImage())