diff --git a/brain/repo-map.json b/brain/repo-map.json
index 6afda84..d0f8f1f 100644
--- a/brain/repo-map.json
+++ b/brain/repo-map.json
@@ -505,5 +505,11 @@
       "role": "回执触发（SCF）",
       "description": "COS 回执事件触发确认链路"
     }
+  },
+  "last_updated": "2026-05-19 · D105",
+  "_meta": {
+    "updated": "2026-05-19T20:50:00Z",
+    "updater": "铸渊 · ICE-GL-ZY001 · D105",
+    "note": "完整大脑结构见 brain/ 目录。过去时间线已归档至 brain/archive/。growth-timeline见 brain/temporal-core/zhuyuan-growth-timeline.json"
   }
 }
\ No newline at end of file