diff --git a/.memory/worklog.json b/.memory/worklog.json
index a2a0354..aae4db1 100644
--- a/.memory/worklog.json
+++ b/.memory/worklog.json
@@ -1,12 +1,5 @@
 {
   "entries": [
-    {
-      "files_changed": 4,
-      "hash": "a662130",
-      "message": "auto-save 2026-05-15 17:55 (+1, ~3)",
-      "ts": "2026-05-15T17:56:05+08:00",
-      "type": "commit"
-    },
     {
       "files_changed": 2,
       "hash": "fae3fb3",
@@ -3258,6 +3251,13 @@
       "message": "auto-save 2026-05-18 15:29 (+1, ~5)",
       "hash": "1c451c6",
       "files_changed": 6
+    },
+    {
+      "ts": "2026-05-18T15:34:15+08:00",
+      "type": "commit",
+      "message": "feat: add backend document database",
+      "hash": "1ac9b1b",
+      "files_changed": 4
     }
   ]
 }