diff --git a/server/ai/validator.js b/server/ai/validator.js
index f2f92eb..e250fd1 100644
--- a/server/ai/validator.js
+++ b/server/ai/validator.js
@@ -1,5 +1,6 @@
 // JSON Schema 校验 — 验证 AI 返回的 JSON 结构
 const schemas = {
+  ask: { required: [], optional: ['question','reply'] },
   purchase: { required: ['purchase_item'], optional: ['quantity','unit_price','freight','payment_method','invoice_type','status','applicant','remarks','created_time','is_new','use_recent_image'] },
   query: { required: [], optional: [] },
   chat: { required: ['reply'], optional: [] },
diff --git a/server/handlers.js b/server/handlers.js
index 5f7555d..7961143 100644
--- a/server/handlers.js
+++ b/server/handlers.js
@@ -127,17 +127,24 @@ function handleAIResult(aiResult, roomId, username, originalText, attachments) {
     }
     if (!isNew && !purchase) {
       purchase = db.prepare('SELECT * FROM purchases WHERE room_id = ? AND item LIKE ? AND status != ?').get(roomId, `%${aiResult.purchase_item}%`, '已完成');
-      // 全名匹配失败 → 用物品名核心关键词（去括号内容）再次尝试
+      // 全名匹配失败 → 去掉括号内容后用剩余关键词回退匹配
       if (!purchase) {
         const keyword = aiResult.purchase_item.replace(/[（(].*[）)]/g, '').trim();
-        if (keyword.length >= 2 && keyword !== aiResult.purchase_item) {
+        if (keyword.length >= 2) {
           console.log('🔍 全名不匹配，尝试关键词:', keyword);
-          purchase = db.prepare('SELECT * FROM purchases WHERE room_id = ? AND item LIKE ? AND status != ?').get(roomId, `%${keyword}%`, '已完成');
+          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');
         }
       }
     }
     console.log('📦 purchase_item:', aiResult.purchase_item, isNew ? '(强制新建)' : purchase ? '(匹配已有)' : '(未匹配-新建)');
 
+    // is_new 为 false 但匹配失败 → 拒绝新建，提示用户
+    if (!isNew && !purchase) {
+      storeAndBroadcastText(roomId, '小财', `未找到与「${aiResult.purchase_item}」匹配的采购记录，无法更新。请检查物品名称是否正确。`);
+      addToHistory(roomId, 'assistant', `未找到匹配记录`);
+      return;
+    }
+
     let replyText = '';
     const quantity = aiResult.quantity || 1;
     const unitPrice = aiResult.unit_price || 0;
diff --git a/server/ws/index.js b/server/ws/index.js
index 8cb7e32..9abceed 100644
--- a/server/ws/index.js
+++ b/server/ws/index.js
@@ -7,7 +7,7 @@ const clients = new Map();
 
 function init(wss) {
   wss.on('connection', (ws, req) => {
-    console.log('✅ WebSocket 客户端已连接');
+    //console.log('✅ WebSocket 客户端已连接');
     const url = new URL(req.url, 'http://localhost');
     const token = url.searchParams.get('token');
     if (!token) return ws.close();