chore: 清理测试密钥文件，防止敏感信息泄露

- 从 git 仓库移除已提交的测试公钥（cargo-test.key.pub、npm-test.key.pub）
- 本地删除测试密钥文件（cargo-test.key、npm-test.key）
- 更新 .gitignore 排除所有测试相关密钥

.gitignore

@@ -28,4 +28,5 @@ test_kick.sh
 tauri-app/src-tauri/binaries/*
 .tauri-signing-key
 *.key
+*test*.key*
 .atomcode/

tauri-app/src-tauri/cargo-test.key.pub

@@ -1 +0,0 @@
-dW50cnVzdGVkIGNvbW1lbnQ6IG1pbmlzaWduIHB1YmxpYyBrZXk6IEM1NjRBRUQ1NTZBODZERDIKUldUU2JhaFcxYTVreFk0MFVuYzNsVVcrWHVaSndMb3J0N2RGTU10MjRYUHlFUUJTVEJDc0RhZWgK

tauri-app/src-tauri/npm-test.key.pub

@@ -1 +0,0 @@
-dW50cnVzdGVkIGNvbW1lbnQ6IG1pbmlzaWduIHB1YmxpYyBrZXk6IDFBRkQ4NzU0RUNENUM3M0YKUldRL3g5WHNWSWY5R2trbVJRaEVuZ2xTQjEwUlh0NEl1NG1XNXdxbzFjcE5FNnhxQi8wY1U4TlIK