fix issues

server/handlers.js

@@ -135,6 +135,11 @@ function handleAIResult(aiResult, roomId, username, originalText, attachments) {
           purchase = db.prepare('SELECT * FROM purchases WHERE room_id = ? AND item LIKE ? AND status != ? ORDER BY created_at DESC LIMIT 1').get(roomId, `%${keyword}%`, '已完成');
         }
       }
+      // 所有 LIKE 失败 → 回退到房间内最近一条未完成采购（用户纠正的大概率是它）
+      if (!purchase) {
+        console.log('🔍 LIKE 全失败，回退到最近未完成记录');
+        purchase = db.prepare('SELECT * FROM purchases WHERE room_id = ? AND status != ? ORDER BY created_at DESC LIMIT 1').get(roomId, '已完成');
+      }
     }
     console.log('📦 purchase_item:', aiResult.purchase_item, isNew ? '(强制新建)' : purchase ? '(匹配已有)' : '(未匹配-新建)');