diff --git a/.gitignore b/.gitignore
index ad6e875..55a4465 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@ __pycache__/
 *.db-shm
 *.db-journal
 !state_*.db
+state_merged.db
diff --git a/memories/MEMORY.md b/memories/MEMORY.md
index 69a9de7..5305ade 100644
--- a/memories/MEMORY.md
+++ b/memories/MEMORY.md
@@ -26,4 +26,33 @@ RackNerd VPS (New Year Special):
 - Username: root
 - Root Password: Zg58Mb73C4ueHFYhq3
 - 已安装 hermes agent
-- 问题: Telegram 对话失联无响应
\ No newline at end of file
+- 问题: Telegram 对话失联无响应
+§
+## Hermes Sync 架构 (2026-04-14 建成)
+
+Gitea: https://d.momix.cc/Mixer/hermes-sync
+
+三台机器：
+- 本地 Linux (10-40-29-186): ~/.hermes-sync (symlink to ~/hermes-sync-tmp), ~/.hermes
+- VPS RackNerd (soe219028): ~/.hermes-sync, ~/.hermes
+- MacOS (MixdeMac-mini.local): /Users/moore/.hermes-sync, /Users/moore/.hermes
+
+同步内容：memories/MEMORY.md, skills/, state.db（每机器一个 state_<hostname>.db）
+不同步：config.yaml, .env, auth.json 等配置
+
+sync.sh 已稳定：217行，无checkpoint，直接copy到temp dir再处理，避免SQLite WAL锁冲突
+cron: 每2小时，VPS和MacOS用绝对路径 /Users/moore/.hermes-sync/sync.sh
+本地: 软链 ~/hermes-sync-tmp -> ~/hermes-sync
+
+MacOS hostname: MixdeMac-mini.local
+
+## macOS Hermes 路径
+- 数据目录: /Users/moore/.hermes/state.db
+- Hermes CLI: /Users/moore/.local/bin/hermes
+- 无systemd，用cron管理后台进程
+
+## SQLite 多机同步关键经验
+- WAL模式的db不能直接copy，会损坏。用temp dir中转。
+- 不能对WAL模式的db做checkpoint（会造成malformed image），直接shutil.copy2即可，WAL会在下次连接时自动attach。
+- merge时sessions用INSERT OR REPLACE（去重），messages用INSERT OR IGNORE（避免重复插入）
+- 列数用PRAGMA table_info动态获取，不硬编码
\ No newline at end of file
diff --git a/state_10-40-29-186.db b/state_10-40-29-186.db
index e90696a..c4c556e 100644
Binary files a/state_10-40-29-186.db and b/state_10-40-29-186.db differ
diff --git a/state_merged.db b/state_merged.db
deleted file mode 100644
index 1e2b47a..0000000
Binary files a/state_merged.db and /dev/null differ