UI: 容量按钮缩小、自定义默认空、保存验证、比例提示加"时，"

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

frontend/src/components/RecipeDetailOverlay.vue

@@ -165,7 +165,7 @@
             <select v-model.number="dilutionRatio" class="editor-select" style="width:60px">
               <option v-for="n in [3,4,5,6,7,8,9,10,12,15,20]" :key="n" :value="n">{{ n }}</option>
             </select>
-            <span class="ratio-hint">纯精油总数约为 {{ editorSuggestedEo }} 滴，现在为 {{ editorEoDrops }} 滴</span>
+            <span class="ratio-hint">时，纯精油总数约为 {{ editorSuggestedEo }} 滴，现在为 {{ editorEoDrops }} 滴</span>
           </div>
         </div>
 

frontend/src/views/RecipeManager.vue

@@ -253,7 +253,7 @@
             <select v-model.number="formDilution" class="select-sm">
               <option v-for="n in [3,4,5,6,7,8,9,10,12,15,20]" :key="n" :value="n">{{ n }}</option>
             </select>
-            <span class="ratio-hint">纯精油总数约为 {{ suggestedEoDrops }} 滴，现在为 {{ eoTotalDrops }} 滴</span>
+            <span class="ratio-hint">时，纯精油总数约为 {{ suggestedEoDrops }} 滴，现在为 {{ eoTotalDrops }} 滴</span>
           </div>
         </div>
 
@@ -433,7 +433,7 @@ const newIngSearch = ref('')
 const newIngDrops = ref(1)
 const newIngDropdownOpen = ref(false)
 const formVolume = ref('30')
-const formCustomVolume = ref(100)
+const formCustomVolume = ref(null)
 const formCustomUnit = ref('drops')
 const formDilution = ref(6)
 
@@ -764,6 +764,7 @@ function resetForm() {
   newIngSearch.value = ''
   newIngDrops.value = 1
   formVolume.value = '30'
+  formCustomVolume.value = null
   formDilution.value = 6
 }
 
@@ -933,6 +934,10 @@ function toggleFormTag(tag) {
 }
 
 async function saveCurrentRecipe() {
+  if (formVolume.value === 'custom' && !formCustomVolume.value) {
+    ui.showToast('请输入自定义容量')
+    return
+  }
   const eoIngs = formIngredients.value.filter(i => i.oil && i.oil !== '椰子油' && i.drops > 0)
   if (!formName.value.trim()) {
     ui.showToast('请输入配方名称')
@@ -1706,7 +1711,7 @@ watch(() => recipeStore.recipes, () => {
 .action-btn-primary:hover { opacity: 0.9; }
 .action-btn-sm { padding: 5px 12px; font-size: 12px; }
 .volume-controls { display: flex; gap: 6px; margin-bottom: 8px; }
-.volume-btn { flex: 1; padding: 6px 0; border: 1.5px solid #d4cfc7; border-radius: 8px; background: #fff; font-size: 13px; cursor: pointer; font-family: inherit; color: #6b6375; text-align: center; }
+.volume-btn { flex: 1; padding: 4px 0; border: 1px solid #d4cfc7; border-radius: 6px; background: #fff; font-size: 12px; cursor: pointer; font-family: inherit; color: #6b6375; text-align: center; }
 .volume-btn.active { background: #e8f5e9; border-color: #7ec6a4; color: #2e7d5a; font-weight: 600; }
 .volume-btn:hover { border-color: #7ec6a4; }
 .custom-volume-row { display: flex; gap: 6px; align-items: center; margin-bottom: 6px; }