feat: 权限细化、商业认证跳转、UI改进

权限:
- viewer 管理配方页只显示我的配方，隐藏公共配方库和工具栏
- 高级编辑者可看到精油价目信息不全的红色提示
- 商业核算删除按钮仅管理员可见
- 搜索未收录通知只发管理员和高级编辑者

Tab 可见性:
- 所有用户可见：配方查询、管理配方、个人库存、精油价目、商业核算
- 需登录的 tab 点击弹登录框，登录后跳转
- 操作日志/Bug/用户管理仅管理员可见

商业核算:
- 未认证用户可看项目列表，点详情提示去认证
- 跳转到我的账户页商业认证区域并自动滚动

其他:
- 我的配方和收藏配方默认折叠

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

frontend/src/views/MyDiary.vue

@@ -241,7 +241,7 @@
       </div>
 
       <!-- Business Verification -->
-      <div v-if="!auth.isBusiness" class="section-card">
+      <div v-if="!auth.isBusiness" ref="bizCertRef" class="section-card">
         <h4>💼 商业认证</h4>
         <p class="hint-text">申请商业认证后可使用商业核算功能。</p>
         <div class="form-group">
@@ -259,8 +259,8 @@
 </template>
 
 <script setup>
-import { ref, onMounted, watch } from 'vue'
-import { useRouter } from 'vue-router'
+import { ref, nextTick, onMounted, watch } from 'vue'
+import { useRouter, useRoute } from 'vue-router'
 import { useAuthStore } from '../stores/auth'
 import { useOilsStore } from '../stores/oils'
 import { useDiaryStore } from '../stores/diary'
@@ -274,8 +274,10 @@ const oils = useOilsStore()
 const diaryStore = useDiaryStore()
 const ui = useUiStore()
 const router = useRouter()
+const route = useRoute()
+const bizCertRef = ref(null)
 
-const activeTab = ref('brand')
+const activeTab = ref(route.query.tab || 'brand')
 const pasteText = ref('')
 const selectedDiaryId = ref(null)
 const returnRecipeId = ref(null)
@@ -305,6 +307,11 @@ onMounted(async () => {
   displayName.value = auth.user.display_name || ''
   await loadBrandSettings()
   returnRecipeId.value = localStorage.getItem('oil_return_recipe_id') || null
+  // 从商业核算跳转过来，滚到商业认证区域
+  if (route.query.section === 'biz-cert') {
+    await nextTick()
+    bizCertRef.value?.scrollIntoView({ behavior: 'smooth', block: 'center' })
+  }
 })
 
 function goBackToRecipe() {