chore: 添加 .gitattributes 规范行尾

.gitattributes

@@ -0,0 +1,4 @@
+# 行尾规范：文本文件统一 LF，Windows 批处理保留 CRLF
+* text=auto eol=lf
+*.bat text eol=crlf
+*.cmd text eol=crlf

.gitea/workflows/deploy.yml

@@ -34,12 +34,16 @@ jobs:
           curl -sLO "https://dl.k8s.io/release/$KUBECTL_VERSION/bin/linux/amd64/kubectl"
           chmod +x kubectl
           mv kubectl /usr/local/bin/
-          echo "${{ secrets.KUBECONFIG_B64 }}" | base64 -d > /tmp/kubeconfig
+          echo "${{ secrets.KUBECONFIG_B64 }}" | tr -d '[:space:]' | base64 -d > /tmp/kubeconfig
           chmod 600 /tmp/kubeconfig
           if [ ! -s /tmp/kubeconfig ]; then
             echo "ERROR: KUBECONFIG_B64 secret 为空，请先在 lpt-infra 仓库配置 Secret"
             exit 1
           fi
+          if ! grep -q '^apiVersion:' /tmp/kubeconfig; then
+            echo "ERROR: KUBECONFIG_B64 解码后不是有效 kubeconfig，请重新生成并配置 Secret"
+            exit 1
+          fi
           kubectl --kubeconfig=/tmp/kubeconfig config view --minify >/dev/null
 
       - name: Apply manifests