diff --git a/.gitignore b/.gitignore
index de921450..456cb4a2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,8 @@
 # 屏蔽服务端运行日志
 Mirserver/**/Log/**
 Mirserver/GCConfig.ini
-cilent\996M2资源集成工具
-cilent\cache
+client\996M2资源集成工具
+client\cache
 
 # 常见日志/临时文件
 *.log
diff --git a/AGENTS.md b/AGENTS.md
new file mode 100644
index 00000000..8e5bfa71
--- /dev/null
+++ b/AGENTS.md
@@ -0,0 +1,6 @@
+# Project Rules
+
+- This project is split into `Mirserver` (server) and `client` (client).
+- Files under `Mirserver` use GB2312/GBK encoding. Read and write them with the server encoding preserved; do not silently convert them to UTF-8.
+- Files under `client` use UTF-8 encoding. Read and write them as UTF-8.
+- When changing mirrored server/client logic, keep each side in its own encoding and verify Chinese text after edits.