Raise LoginModal z-index above recipe overlay

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

frontend/src/components/LoginModal.vue

@@ -119,7 +119,7 @@ async function submit() {
   position: fixed;
   inset: 0;
   background: rgba(0, 0, 0, 0.35);
-  z-index: 5000;
+  z-index: 6000;
   display: flex;
   align-items: center;
   justify-content: center;

frontend/src/components/RecipeDetailOverlay.vue

@@ -350,7 +350,6 @@ import { useUiStore } from '../stores/ui'
 import { useDiaryStore } from '../stores/diary'
 import { api } from '../composables/useApi'
 import { oilEn, recipeNameEn } from '../composables/useOilTranslation'
-import { showPrompt } from '../composables/useDialog'
 // TagPicker replaced with inline tag editing
 
 const props = defineProps({
@@ -577,16 +576,16 @@ async function saveToDiary() {
     ui.openLogin()
     return
   }
-  const name = await showPrompt('保存为我的配方，名称：', recipe.value.name)
+  const name = prompt('保存为我的配方，名称：', recipe.value.name)
   if (!name) return
   try {
-    await recipesStore.saveRecipe({
+    await api.post('/api/diary', {
       name,
+      source_recipe_id: recipe.value._id || null,
+      ingredients: recipe.value.ingredients.map(i => ({ oil: i.oil, drops: i.drops })),
       note: recipe.value.note || '',
-      ingredients: recipe.value.ingredients.map(i => ({ oil_name: i.oil, drops: i.drops })),
-      tags: recipe.value.tags || [],
     })
-    ui.showToast('已保存到「我的配方」')
+    ui.showToast('已保存到「我的配方日记」')
   } catch (e) {
     ui.showToast('保存失败: ' + (e?.message || '未知错误'))
   }