feat: 重写新增配方+共享审核完整流程

新增配方:
- 修复保存失败（oil→oil_name字段转换）
- 智能识别支持多条配方同时解析
- 识别结果逐条预览，可修改/放弃/保存单条/全部保存
- 编辑器加成分表格（单价/滴、小计、总成本）
- 保存到个人配方（diary）

共享审核:
- 新增 /api/recipes/{id}/reject 端点（带原因通知提交者）
- 采纳配方时通知提交者"配方已采纳"
- 拒绝时管理员输入原因
- 贡献统计含被采纳的配方数

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

frontend/src/composables/useSmartPaste.js

@@ -260,3 +260,65 @@ export function parseSingleBlock(raw, oilNames) {
     notFound
   }
 }
+
+/**
+ * Parse multi-recipe text. Each time an unrecognized non-number token
+ * appears after some oils have been found, it starts a new recipe.
+ */
+export function parseMultiRecipes(raw, oilNames) {
+  const parts = raw.split(/[,，、\n\r]+/).map(s => s.trim()).filter(s => s)
+
+  const recipes = []
+  let current = { nameParts: [], ingredientParts: [], foundOil: false }
+
+  for (const part of parts) {
+    const hasNumber = /\d/.test(part)
+    const hasOil = oilNames.some(oil => part.includes(oil)) ||
+                   Object.keys(OIL_HOMOPHONES).some(alias => part.includes(alias))
+    // Also check fuzzy: 3+ char parts
+    const fuzzyOil = !hasOil && part.replace(/\d+\.?\d*/g, '').length >= 2 &&
+                     findOil(part.replace(/\d+\.?\d*/g, '').trim(), oilNames)
+
+    if (current.foundOil && !hasOil && !fuzzyOil && !hasNumber && part.length >= 2) {
+      // New recipe starts
+      recipes.push(current)
+      current = { nameParts: [], ingredientParts: [], foundOil: false }
+      current.nameParts.push(part)
+    } else if (!current.foundOil && !hasOil && !fuzzyOil && !hasNumber) {
+      current.nameParts.push(part)
+    } else {
+      current.foundOil = true
+      current.ingredientParts.push(part)
+    }
+  }
+  recipes.push(current)
+
+  // Convert each block to parsed recipe
+  return recipes.filter(r => r.ingredientParts.length > 0 || r.nameParts.length > 0).map(r => {
+    const allIngs = []
+    const notFound = []
+    for (const p of r.ingredientParts) {
+      const parsed = parseOilChunk(p, oilNames)
+      for (const item of parsed) {
+        if (item.notFound) notFound.push(item.oil)
+        else allIngs.push(item)
+      }
+    }
+    // Deduplicate
+    const deduped = []
+    const seen = {}
+    for (const item of allIngs) {
+      if (seen[item.oil] !== undefined) {
+        deduped[seen[item.oil]].drops += item.drops
+      } else {
+        seen[item.oil] = deduped.length
+        deduped.push({ ...item })
+      }
+    }
+    return {
+      name: r.nameParts.join(' ') || '未命名配方',
+      ingredients: deduped,
+      notFound,
+    }
+  })
+}