chore(backlog): 记录 g153 完成

.ua/backlog.json

@@ -1587,7 +1587,7 @@
       "motivation": "单一关键词只能粗筛：想找「日期区间」时搜日期会连 calendar/timeline 一起返回；且未命中仍退 0，脚本里判断不了。",
       "acceptance": "ua search a b 取各词命中的最弱档做 AND 过滤仍保持 id>标题>props>步骤 的排序；未命中输出相近建议并 exit 1；无参数打印用法。",
       "notes": "",
-      "status": "open"
+      "status": "done"
     }
   ]
 }

.ua/iterations.log

@@ -197,3 +197,4 @@
 {"ts":"2026-10-26T15:50:44+08:00","id":"g150","result":"done","commit":"04f6df8","summary":"ua info / MCP get_component 带出所属配方线索"}
 {"ts":"2026-10-26T15:51:49+08:00","id":"g151","result":"done","commit":"f59e9b7","summary":"verify 卡住 MCP 工具清单三处漂移"}
 {"ts":"2026-10-26T15:52:38+08:00","id":"g152","result":"done","commit":"bc984ae","summary":"ua list --components 出 67 组件全览"}
+{"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"}