diff --git a/.memory/worklog.json b/.memory/worklog.json
index a977958..af4c967 100644
--- a/.memory/worklog.json
+++ b/.memory/worklog.json
@@ -237,6 +237,13 @@
       "message": "auto-save 2026-04-19 21:56 (~1)",
       "hash": "68c233d",
       "files_changed": 1
+    },
+    {
+      "ts": "2026-04-19T21:59:10+08:00",
+      "type": "commit",
+      "message": "fix(sandbox): sanitize userId → container name(下划线→横杠)",
+      "hash": "158faeb",
+      "files_changed": 2
     }
   ]
 }