fix: 精油名不截断改用clamp缩放、下架错误提示、翻译双向同步

精油名:
- 用 font-size:clamp() 自适应缩小，不截断不换行
- 去掉 overflow:hidden/text-overflow:ellipsis

信息不全判定:
- 缺英文名、零售价、或会员价 = 红色底色
- 下架的不算不全
- 补全后自动恢复

下架功能:
- 修复：添加详细错误信息显示
- 编辑弹窗宽度恢复到默认520px（不再限制400px）

翻译双向同步:
- 配方卡片修改翻译 → 同时保存到 oils.en_name（oilsStore.saveOil）
- 精油价目页修改英文名 → 保存到 oils.en_name
- 两处共用同一个DB字段，loadOils后自动同步
- getCardOilName fallback链：custom → oilsMeta.enName → oilEn → name

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

frontend/src/components/RecipeDetailOverlay.vue

@@ -597,18 +597,33 @@ function copyText() {
 
 async function applyTranslation() {
   showTranslationEditor.value = false
-  // Persist en_name to backend
+  let saved = 0
+
+  // 1. Save recipe English name
   if (recipe.value._id && customRecipeNameEn.value) {
     try {
       await api.put(`/api/recipes/${recipe.value._id}`, {
         en_name: customRecipeNameEn.value,
         version: recipe.value._version,
       })
-      ui.showToast('翻译已保存')
-    } catch (e) {
-      ui.showToast('翻译保存失败')
-    }
+      recipe.value.en_name = customRecipeNameEn.value
+      saved++
+    } catch {}
   }
+
+  // 2. Save each oil's English name to oils table (syncs with oil reference page)
+  for (const [oilName, enName] of Object.entries(customOilNameEn.value)) {
+    if (!enName?.trim()) continue
+    const meta = oilsStore.oilsMeta[oilName]
+    if (!meta || meta.enName === enName.trim()) continue
+    try {
+      await oilsStore.saveOil(oilName, meta.bottlePrice, meta.dropCount, meta.retailPrice, enName.trim())
+      saved++
+    } catch {}
+  }
+
+  if (saved > 0) ui.showToast(`翻译已保存（${saved}项）`)
+
   cardImageUrl.value = null
   nextTick(() => generateCardImage())
 }
@@ -616,7 +631,7 @@ async function applyTranslation() {
 // Override translation getters for card rendering
 function getCardOilName(name) {
   if (cardLang.value === 'en') {
-    return customOilNameEn.value[name] || oilEn(name) || name
+    return customOilNameEn.value[name] || oilsStore.oilsMeta[name]?.enName || oilEn(name) || name
   }
   return name
 }