fix: 使用 cat heredoc 方法修复企业微信通知环境变量展开

- 使用 cat > file <<EOF 替代其他方法
- 确保环境变量在 heredoc 中正确展开
- 本地测试验证成功

.woodpecker.yml

@@ -418,23 +418,20 @@ steps:
       - |
         BRANCH="${CI_COMMIT_BRANCH:-unknown}"
         COMMIT="${CI_COMMIT_SHA:0:7}"
-        MESSAGE=$(echo "${CI_COMMIT_MESSAGE:-no message}" | tr '\n' ' ' | sed 's/"/\\"/g')
+        MESSAGE=$(echo "${CI_COMMIT_MESSAGE:-no message}" | tr '\n' ' ')
         AUTHOR="${CI_COMMIT_AUTHOR:-unknown}"
         PIPELINE_NUMBER="${CI_PIPELINE_NUMBER:-0}"
         REPO_ID="${CI_REPO_ID:-1}"
         TIMESTAMP=$(date "+%Y-%m-%d %H:%M:%S")
         
-        PAYLOAD=$(cat <<ENDPAYLOAD
+        cat > /tmp/payload.json <<EOF
         {
           "msgtype": "markdown",
           "markdown": {
             "content": "## 🚀 Novalon Website 部署通知\n\n> **构建状态**: <font color=\"info\">成功</font>\n\n**项目信息**\n> 分支: \`${BRANCH}\`\n> 提交: \`${COMMIT}\`\n> 作者: ${AUTHOR}\n\n**提交信息**\n> ${MESSAGE}\n\n**操作**\n> [查看构建详情](https://ci.f.novalon.cn/repos/${REPO_ID}/pipeline/${PIPELINE_NUMBER})\n\n---\n> 时间: ${TIMESTAMP}\n> Pipeline #${PIPELINE_NUMBER}"
           }
         }
-        ENDPAYLOAD
-        )
-        
-        echo "$PAYLOAD" > /tmp/payload.json
+        EOF
         
         curl -X POST "$WECHAT_WEBHOOK" \
           -H 'Content-Type: application/json' \
@@ -457,23 +454,20 @@ steps:
       - |
         BRANCH="${CI_COMMIT_BRANCH:-unknown}"
         COMMIT="${CI_COMMIT_SHA:0:7}"
-        MESSAGE=$(echo "${CI_COMMIT_MESSAGE:-no message}" | tr '\n' ' ' | sed 's/"/\\"/g')
+        MESSAGE=$(echo "${CI_COMMIT_MESSAGE:-no message}" | tr '\n' ' ')
         AUTHOR="${CI_COMMIT_AUTHOR:-unknown}"
         PIPELINE_NUMBER="${CI_PIPELINE_NUMBER:-0}"
         REPO_ID="${CI_REPO_ID:-1}"
         TIMESTAMP=$(date "+%Y-%m-%d %H:%M:%S")
         
-        PAYLOAD=$(cat <<ENDPAYLOAD
+        cat > /tmp/payload.json <<EOF
         {
           "msgtype": "markdown",
           "markdown": {
             "content": "## 🚀 Novalon Website 部署通知\n\n> **构建状态**: <font color=\"warning\">失败</font>\n\n**项目信息**\n> 分支: \`${BRANCH}\`\n> 提交: \`${COMMIT}\`\n> 作者: ${AUTHOR}\n\n**提交信息**\n> ${MESSAGE}\n\n**操作**\n> [查看构建详情](https://ci.f.novalon.cn/repos/${REPO_ID}/pipeline/${PIPELINE_NUMBER})\n\n---\n> 时间: ${TIMESTAMP}\n> Pipeline #${PIPELINE_NUMBER}"
           }
         }
-        ENDPAYLOAD
-        )
-        
-        echo "$PAYLOAD" > /tmp/payload.json
+        EOF
         
         curl -X POST "$WECHAT_WEBHOOK" \
           -H 'Content-Type: application/json' \