fix: 智能识别配方名称 + 新增默认保存到个人配方

- 修复空格/无分隔符时配方名称无法识别的问题
- 支持"长高芳香调理8永久花10"连写格式自动分离名称
- 所有用户新增配方默认保存到个人配方（diary），不进公共库

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

frontend/src/views/RecipeManager.vue

@@ -520,16 +520,17 @@ async function saveCurrentRecipe() {
   }
 
   const cleanIngs = validIngs.map(i => ({ oil: i.oil, drops: i.drops }))
+  const diaryPayload = {
+    name: formName.value.trim(),
+    ingredients: cleanIngs,
+    note: formNote.value,
+    tags: formTags.value,
+  }
 
   if (editingRecipe.value && editingRecipe.value._diary_id) {
-    // Editing a diary (personal) recipe
+    // Editing an existing diary recipe
     try {
-      await diaryStore.updateDiary(editingRecipe.value._diary_id, {
-        name: formName.value.trim(),
-        ingredients: cleanIngs,
-        note: formNote.value,
-        tags: formTags.value,
-      })
+      await diaryStore.updateDiary(editingRecipe.value._diary_id, diaryPayload)
       ui.showToast('个人配方已更新')
       closeOverlay()
     } catch (e) {
@@ -538,22 +539,30 @@ async function saveCurrentRecipe() {
     return
   }
 
-  // Public recipe: API expects oil_name
-  const payload = {
-    name: formName.value.trim(),
-    ingredients: cleanIngs.map(i => ({ oil_name: i.oil, drops: i.drops })),
-    note: formNote.value,
-    tags: formTags.value,
-  }
-
-  if (editingRecipe.value) {
-    payload._id = editingRecipe.value._id
-    payload._version = editingRecipe.value._version
+  if (editingRecipe.value && editingRecipe.value._id) {
+    // Editing an existing public recipe
+    const payload = {
+      _id: editingRecipe.value._id,
+      _version: editingRecipe.value._version,
+      name: formName.value.trim(),
+      ingredients: cleanIngs.map(i => ({ oil_name: i.oil, drops: i.drops })),
+      note: formNote.value,
+      tags: formTags.value,
+    }
+    try {
+      await recipeStore.saveRecipe(payload)
+      ui.showToast('配方已更新')
+      closeOverlay()
+    } catch (e) {
+      ui.showToast('保存失败: ' + (e.message || '未知错误'))
+    }
+    return
   }
 
+  // New recipe: always save to diary (personal)
   try {
-    await recipeStore.saveRecipe(payload)
-    ui.showToast(editingRecipe.value ? '配方已更新' : '配方已添加')
+    await diaryStore.createDiary(diaryPayload)
+    ui.showToast('已添加到我的配方')
     closeOverlay()
   } catch (e) {
     ui.showToast('保存失败: ' + (e.message || '未知错误'))