fix: 对齐+左对齐+所有用户可新增

- 配方查询页section-label与section-header padding对齐
- 管理配方页标题左对齐，toggle图标靠右
- 新增按钮对所有用户可见（新增到个人配方）

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

frontend/src/views/RecipeManager.vue

@@ -26,7 +26,7 @@
 
     <!-- Row 2: Add + Select + Tags + Batch + Export -->
     <div class="toolbar-row">
-      <button v-if="auth.canEdit" class="btn-outline btn-sm" @click="showAddOverlay = true">新增</button>
+      <button class="btn-outline btn-sm" @click="showAddOverlay = true">新增</button>
       <button
         class="btn-sm"
         :class="isAllSelected ? 'btn-select-active' : 'btn-outline'"
@@ -1433,8 +1433,8 @@ watch(() => recipeStore.recipes, () => {
 .log-recipe { font-weight: 500; color: #3e3a44; }
 .log-from { color: #999; font-size: 12px; }
 .log-time { color: #bbb; font-size: 11px; margin-left: auto; white-space: nowrap; }
-.section-title.clickable { cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
-.toggle-icon { font-size: 12px; color: #999; }
+.section-title.clickable { cursor: pointer; display: flex; align-items: center; gap: 6px; }
+.toggle-icon { font-size: 12px; color: #999; margin-left: auto; }
 
 .contrib-tag {
   font-size: 11px;

frontend/src/views/RecipeSearch.vue

@@ -719,7 +719,7 @@ function onCarouselTouchEnd(e) {
   font-size: 14px;
   font-weight: 600;
   color: #3e3a44;
-  padding: 8px 4px;
+  padding: 10px 12px;
   margin-bottom: 8px;
 }