revert: 删除购油方案功能，修复MyDiary模板错误

完全移除oil_plans相关代码：
- 后端: 7个API端点、2个数据库表
- 前端: plans store、Inventory方案UI、UserManagement方案编辑器
- UserMenu: 方案通知按钮
- 修复MyDiary.vue多余的section-card div导致的构建失败

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

frontend/src/views/UserManagement.vue

@@ -102,7 +102,6 @@
           </select>
           <button v-if="!u.business_verified" class="btn-sm btn-outline" @click="grantBusiness(u)" title="开通商业认证">💼</button>
           <button v-else class="btn-sm btn-outline" @click="revokeBusiness(u)" title="撤销商业认证" style="opacity:0.5">💼✕</button>
-          <button class="btn-sm btn-outline" @click="openPlanEditor(u)" title="定制方案">📋</button>
           <button class="btn-sm btn-delete" @click="removeUser(u)" title="删除用户">🗑️</button>
         </div>
       </div>
@@ -111,87 +110,6 @@
 
     <div class="user-count">共 {{ users.length }} 个用户</div>
 
-    <!-- Pending Plan Requests -->
-    <div v-if="pendingPlanRequests.length" class="review-section">
-      <h4 class="section-title">📋 方案请求 ({{ pendingPlanRequests.length }})</h4>
-      <div class="review-list">
-        <div v-for="p in pendingPlanRequests" :key="p.id" class="plan-request-card">
-          <div class="plan-request-header">
-            <span class="plan-request-user">{{ p.user_name || p.username || '用户' }} 的需求</span>
-            <button class="btn-sm btn-approve" @click="openPlanEditorForRequest(p)">去定制</button>
-          </div>
-          <div class="plan-request-desc">{{ p.health_desc }}</div>
-        </div>
-      </div>
-    </div>
-
-    <!-- All Plans (active/archived) -->
-    <div v-if="allTeacherPlans.length" class="review-section">
-      <h4 class="section-title">📋 定制记录</h4>
-      <div class="review-list">
-        <div v-for="p in allTeacherPlans" :key="p.id" class="plan-request-card">
-          <div class="plan-request-header">
-            <span class="plan-request-user">{{ p.user_name || p.username || '用户' }}</span>
-            <span class="plan-status-tag" :class="'status-' + p.status">{{ {active:'进行中',archived:'已归档',pending:'待定制'}[p.status] }}</span>
-            <button class="btn-sm btn-outline" @click="openPlanEditorForRequest(p)">编辑</button>
-          </div>
-          <div v-if="p.title" class="plan-request-desc">{{ p.title }}</div>
-          <div class="plan-recipe-chips">
-            <span v-for="r in (p.recipes || [])" :key="r.id" class="plan-chip">{{ r.recipe_name }} ×{{ r.times_per_month }}/月</span>
-          </div>
-        </div>
-      </div>
-    </div>
-
-    <!-- Plan Editor Modal -->
-    <div v-if="planEditing" class="overlay" @mousedown.self="saveDraft">
-      <div class="overlay-panel" style="max-width:520px">
-        <div class="overlay-header">
-          <h3>为 {{ planEditing.user_name || '用户' }} 定制方案</h3>
-          <button class="btn-close" @click="saveDraft">✕</button>
-        </div>
-        <div style="padding:16px">
-          <div v-if="planEditing.health_desc" class="plan-health-desc">
-            <strong>健康需求：</strong>{{ planEditing.health_desc }}
-          </div>
-
-          <label class="form-label">方案标题</label>
-          <input v-model="planTitle" class="form-input" placeholder="例如：家庭日常保健方案" />
-
-          <label class="form-label" style="margin-top:12px">已添加配方 ({{ planRecipes.length }})</label>
-          <div v-if="planRecipes.length === 0" class="plan-empty-hint">在下方搜索框搜索配方添加</div>
-          <div v-for="(pr, i) in planRecipes" :key="i" class="plan-recipe-row">
-            <span class="plan-recipe-name">{{ pr.recipe_name }}</span>
-            <input v-model.number="pr.times_per_month" type="number" min="1" class="plan-freq-input" />
-            <span class="plan-freq-label">次/月</span>
-            <button class="btn-icon-sm" @click="planRecipes.splice(i, 1)">✕</button>
-          </div>
-
-          <!-- Add recipe from public library -->
-          <label class="form-label" style="margin-top:12px">搜索配方添加</label>
-          <div class="plan-add-recipe">
-            <input v-model="planRecipeSearch" class="form-input" placeholder="输入配方名称搜索..." />
-            <div v-if="planRecipeSearch.trim() && planSearchResults.length" class="plan-search-results">
-              <div v-for="r in planSearchResults" :key="r._id" class="plan-search-item" @click="addRecipeToPlan(r)">
-                {{ r.name }}
-                <span class="plan-search-ings">{{ r.ingredients.map(i => i.oil).join('、') }}</span>
-              </div>
-            </div>
-            <div v-if="planRecipeSearch.trim() && !planSearchResults.length" class="plan-no-results">
-              未找到匹配的配方
-            </div>
-          </div>
-
-          <div style="display:flex;gap:8px;margin-top:16px">
-            <button class="btn-outline" style="flex:1" @click="saveDraft">保存草稿</button>
-            <button class="btn-primary" style="flex:1" @click="savePlan" :disabled="planRecipes.length === 0">
-              发送给会员
-            </button>
-          </div>
-        </div>
-      </div>
-    </div>
-
     <!-- Full-size document preview -->
     <div v-if="showDocFull" class="doc-overlay" @click="showDocFull = null">
       <img :src="showDocFull" class="doc-full-img" />
@@ -203,15 +121,11 @@
 import { ref, computed, onMounted } from 'vue'
 import { useAuthStore } from '../stores/auth'
 import { useUiStore } from '../stores/ui'
-import { useRecipesStore } from '../stores/recipes'
-import { usePlansStore } from '../stores/plans'
 import { api } from '../composables/useApi'
 import { showConfirm, showPrompt } from '../composables/useDialog'
 
 const auth = useAuthStore()
 const ui = useUiStore()
-const recipeStore = useRecipesStore()
-const plansStore = usePlansStore()
 
 const users = ref([])
 const searchQuery = ref('')
@@ -426,142 +340,10 @@ async function rejectBusiness(app) {
   }
 }
 
-// Plan management
-const planEditing = ref(null)
-const planTitle = ref('')
-const planRecipes = ref([])
-const planRecipeSearch = ref('')
-
-const pendingPlanRequests = computed(() =>
-  plansStore.plans.filter(p => p.status === 'pending')
-)
-const allTeacherPlans = computed(() =>
-  plansStore.plans.filter(p => p.status !== 'pending')
-)
-
-const planSearchResults = computed(() => {
-  if (!planRecipeSearch.value.trim()) return []
-  const q = planRecipeSearch.value.trim().toLowerCase()
-  const existing = new Set(planRecipes.value.map(r => r.recipe_name))
-  return recipeStore.recipes
-    .filter(r => r.name.toLowerCase().includes(q) && !existing.has(r.name))
-    .slice(0, 10)
-})
-
-function openPlanEditor(user) {
-  const existing = plansStore.plans.find(p => p.user_id === (user._id || user.id) && p.status !== 'archived')
-  if (existing) {
-    planEditing.value = { ...existing, user_name: user.display_name || user.username }
-    planTitle.value = existing.title || ''
-    planRecipes.value = (existing.recipes || []).map(r => ({ ...r }))
-  } else {
-    planEditing.value = { user_id: user._id || user.id, user_name: user.display_name || user.username, health_desc: '' }
-    planTitle.value = ''
-    planRecipes.value = []
-  }
-  planRecipeSearch.value = ''
-}
-
-function openPlanEditorForRequest(plan) {
-  planEditing.value = { ...plan }
-  planTitle.value = plan.title || ''
-  planRecipes.value = (plan.recipes || []).map(r => ({ ...r }))
-  planRecipeSearch.value = ''
-}
-
-function addRecipeToPlan(recipe) {
-  planRecipes.value.push({
-    recipe_name: recipe.name,
-    ingredients: recipe.ingredients.map(i => ({ oil_name: i.oil, drops: i.drops })),
-    times_per_month: 30,
-  })
-  planRecipeSearch.value = ''
-}
-
-async function saveDraft() {
-  if (!planEditing.value) return
-  try {
-    let planId = planEditing.value.id
-    if (planId) {
-      await api(`/api/oil-plans/${planId}`, {
-        method: 'PUT',
-        body: JSON.stringify({ title: planTitle.value }),
-      })
-      // Sync recipes
-      const existing = planEditing.value.recipes || []
-      for (const r of existing) {
-        await api(`/api/oil-plans/${planId}/recipes/${r.id}`, { method: 'DELETE' })
-      }
-      for (const r of planRecipes.value) {
-        await api(`/api/oil-plans/${planId}/recipes`, {
-          method: 'POST',
-          body: JSON.stringify({ recipe_name: r.recipe_name, ingredients: r.ingredients, times_per_month: r.times_per_month }),
-        })
-      }
-      await plansStore.loadPlans()
-      ui.showToast('草稿已保存')
-    }
-  } catch {
-    ui.showToast('保存失败')
-  }
-  planEditing.value = null
-}
-
-async function savePlan() {
-  try {
-    let planId = planEditing.value.id
-    if (!planId) {
-      // Create new plan
-      const res = await api('/api/oil-plans', {
-        method: 'POST',
-        body: JSON.stringify({
-          health_desc: planEditing.value.health_desc || '',
-          teacher_id: auth.user.id,
-          user_id: planEditing.value.user_id,
-        }),
-      })
-      const data = await res.json()
-      planId = data.id
-    }
-    // Update title
-    await api(`/api/oil-plans/${planId}`, {
-      method: 'PUT',
-      body: JSON.stringify({ title: planTitle.value }),
-    })
-    // Sync recipes: remove old, add new
-    const existing = planEditing.value.recipes || []
-    for (const r of existing) {
-      await api(`/api/oil-plans/${planId}/recipes/${r.id}`, { method: 'DELETE' })
-    }
-    for (const r of planRecipes.value) {
-      await api(`/api/oil-plans/${planId}/recipes`, {
-        method: 'POST',
-        body: JSON.stringify({
-          recipe_name: r.recipe_name,
-          ingredients: r.ingredients,
-          times_per_month: r.times_per_month,
-        }),
-      })
-    }
-    // Activate
-    await api(`/api/oil-plans/${planId}`, {
-      method: 'PUT',
-      body: JSON.stringify({ status: 'active' }),
-    })
-    planEditing.value = null
-    await plansStore.loadPlans()
-    ui.showToast('方案已激活')
-  } catch {
-    ui.showToast('保存失败')
-  }
-}
-
 onMounted(() => {
   loadUsers()
   loadTranslations()
   loadBusinessApps()
-  plansStore.loadPlans()
-  recipeStore.loadRecipes()
 })
 </script>
 
@@ -973,39 +755,4 @@ onMounted(() => {
   }
 }
 
-/* Plan editor */
-.overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.4); z-index: 100; display: flex; align-items: center; justify-content: center; }
-.overlay-panel { background: #fff; border-radius: 14px; width: 90%; max-height: 85vh; overflow-y: auto; }
-.overlay-header { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid #eee; }
-.overlay-header h3 { margin: 0; font-size: 16px; }
-.plan-health-desc { background: #f8f7f5; border-radius: 8px; padding: 10px 12px; margin-bottom: 12px; font-size: 13px; color: #6b6375; }
-.form-label { display: block; font-size: 13px; color: #6b6375; margin-bottom: 4px; font-weight: 500; }
-.form-input { width: 100%; border: 1.5px solid #e5e4e7; border-radius: 8px; padding: 8px; font-size: 13px; font-family: inherit; box-sizing: border-box; }
-.plan-recipe-row {
-  display: flex; align-items: center; gap: 8px; padding: 6px 0; border-bottom: 1px solid #f0f0f0;
-}
-.plan-recipe-name { flex: 1; font-size: 13px; font-weight: 500; }
-.plan-freq-input { width: 50px; padding: 4px 6px; border: 1px solid #e5e4e7; border-radius: 6px; font-size: 12px; text-align: center; }
-.plan-freq-label { font-size: 11px; color: #b0aab5; }
-.plan-add-recipe { position: relative; margin-top: 8px; }
-.plan-search-results {
-  position: absolute; top: 100%; left: 0; right: 0; background: #fff;
-  border: 1px solid #e5e4e7; border-radius: 8px; max-height: 200px; overflow-y: auto; z-index: 10;
-  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
-}
-.plan-search-item { padding: 8px 12px; cursor: pointer; font-size: 13px; border-bottom: 1px solid #f0f0f0; }
-.plan-search-item:hover { background: #f8faf8; }
-.plan-search-ings { display: block; font-size: 11px; color: #b0aab5; margin-top: 2px; }
-.plan-no-results { font-size: 12px; color: #b0aab5; padding: 8px 0; }
-.plan-empty-hint { font-size: 12px; color: #b0aab5; padding: 8px 0; }
-.plan-request-card { background: #fff; border: 1.5px solid #e5e4e7; border-radius: 10px; padding: 12px; margin-bottom: 8px; }
-.plan-request-header { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
-.plan-request-user { font-weight: 600; font-size: 14px; color: #3e3a44; flex: 1; }
-.plan-request-desc { font-size: 13px; color: #6b6375; line-height: 1.5; }
-.plan-status-tag { font-size: 11px; padding: 2px 8px; border-radius: 8px; }
-.status-active { background: #e8f5e9; color: #2e7d5a; }
-.status-archived { background: #f0eeeb; color: #6b6375; }
-.status-pending { background: #fff3e0; color: #e65100; }
-.plan-recipe-chips { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
-.plan-chip { font-size: 11px; padding: 2px 8px; border-radius: 6px; background: #e8f5e9; color: #2e7d5a; }
 </style>