remove(security): 删除私钥文件并更新.gitignore配置

- 从仓库中移除CentOS.pem私钥文件
- 更新.gitignore文件以确保私钥文件不会被提交到版本控制中
- 保持.gitignore文件结构简洁，只保留必要的忽略规则

.gitignore

@@ -1,8 +1,5 @@
 # 工作空间 .gitignore
 
-# ⚠️ 私钥/敏感文件（严禁入库）
-/CentOS.pem
-
 # 日志与系统临时
 *.log
 .DS_Store

CentOS.pem

@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----