chore(backlog): 记录 g156 完成

.ua/backlog.json

@@ -1611,7 +1611,7 @@
       "motivation": "21 个令牌全表打印后再肉眼找某一个，写样式时反复查多行；缺令牌名拼错也不报错。",
       "acceptance": "ua tokens <子串> 只列匹配项并在末尾标注匹配词，--json 同步过滤；无匹配时给出总数并以 1 退出。",
       "notes": "",
-      "status": "open"
+      "status": "done"
     }
   ]
 }

.ua/iterations.log

@@ -200,3 +200,4 @@
 {"ts":"2026-10-26T15:53:22+08:00","id":"g153","result":"done","commit":"0609175","summary":"ua search 多词 AND 与未命中退出码 1"}
 {"ts":"2026-10-26T15:54:06+08:00","id":"g154","result":"done","commit":"ab758ab","summary":"MCP search_components 返回组件级命中"}
 {"ts":"2026-10-26T15:55:14+08:00","id":"g155","result":"done","commit":"a3ece11","summary":"llms.txt 输出配方目录，修正 MCP 工具描述"}
+{"ts":"2026-10-26T15:55:38+08:00","id":"g156","result":"done","commit":"bbebb70","summary":"ua tokens <子串> 过滤令牌"}