diff --git a/.gitea/workflows/preview-cleanup.yml b/.gitea/workflows/preview-cleanup.yml
index 2302fa00f..41f1900ef 100644
--- a/.gitea/workflows/preview-cleanup.yml
+++ b/.gitea/workflows/preview-cleanup.yml
@@ -28,7 +28,14 @@ jobs:
       shell: sh
       run: |
         set -eu
-        apt-get update -qq && apt-get install -y -qq openssh-client >/dev/null 2>&1
+        if command -v apk >/dev/null 2>&1; then
+          apk add --no-cache openssh-client >/dev/null 2>&1
+        elif command -v apt-get >/dev/null 2>&1; then
+          apt-get update -qq && apt-get install -y -qq openssh-client >/dev/null 2>&1
+        else
+          echo "ERROR: No package manager found"
+          exit 1
+        fi
         echo "openssh-client installed"
 
     - name: Remove preview directory from server
@@ -95,18 +102,9 @@ jobs:
       run: |
         set -eu
         PR_NUMBER=$(echo "$GITHUB_REF" | sed 's|refs/pull/||; s|/.*||')
+        export PR_NUMBER
 
-        COMMENT_BODY=$(python3 -c "
-        import json, os
-        pr_num = os.environ['PR_NUMBER']
-        body = f'''🗑️ **预览环境已清理**
-
-PR #{pr_num} 已关闭或合并，对应的预览环境已被清理。
-
-> 如有需要，可以重新打开 PR 来重新生成预览环境。
-'''
-        print(json.dumps({'body': body}))
-        ")
+        COMMENT_BODY=$(python3 scripts/ci/preview_comment.py cleanup)
 
         API_URL="${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/issues/${PR_NUMBER}/comments"
         curl -s -X POST \
@@ -116,3 +114,4 @@ PR #{pr_num} 已关闭或合并，对应的预览环境已被清理。
           "$API_URL" \
           > /dev/null
         echo "Cleanup comment posted"
+
diff --git a/.gitea/workflows/preview-deploy.yml b/.gitea/workflows/preview-deploy.yml
index 819b0301c..28f4f5189 100644
--- a/.gitea/workflows/preview-deploy.yml
+++ b/.gitea/workflows/preview-deploy.yml
@@ -132,11 +132,20 @@ jobs:
             ls -la dist/
           '
 
-    - name: Install SSH client
+    - name: Install SSH client and rsync
       shell: sh
       run: |
         set -eu
-        apt-get update -qq && apt-get install -y -qq openssh-client rsync >/dev/null 2>&1
+        if command -v apk >/dev/null 2>&1; then
+          apk add --no-cache openssh-client rsync >/dev/null 2>&1
+        elif command -v apt-get >/dev/null 2>&1; then
+          apt-get update -qq && apt-get install -y -qq openssh-client rsync >/dev/null 2>&1
+        elif command -v yum >/dev/null 2>&1; then
+          yum install -y openssh-clients rsync >/dev/null 2>&1
+        else
+          echo "ERROR: No package manager found"
+          exit 1
+        fi
         echo "openssh-client and rsync installed"
 
     - name: Deploy preview to server
@@ -202,50 +211,24 @@ jobs:
         set -eu
         PR_NUMBER=$(echo "$GITHUB_REF" | sed 's|refs/pull/||; s|/.*||')
         PREVIEW_URL="https://pr-${PR_NUMBER}.preview.xiaoxiajianji.com"
+        export PR_NUMBER PREVIEW_URL
 
-        # 构建评论内容
-        COMMENT_BODY=$(python3 -c "
-        import json, os
-        pr_num = os.environ['PR_NUMBER']
-        url = os.environ['PREVIEW_URL']
-        body = f'''🚀 **预览环境已部署**
+        COMMENT_BODY=$(python3 scripts/ci/preview_comment.py deploy)
 
-| 项目 | 详情 |
-|------|------|
-| PR号 | #{pr_num} |
-| 预览链接 | [${url}](${url}) |
-| API环境 | staging |
-
-> 💡 预览环境使用 staging API 数据，请勿在预览环境中操作重要数据。
->
-> 🔄 每次提交新代码后预览环境会自动更新。
->
-> 🗑️ PR 关闭或合并后，预览环境会自动清理。
-'''
-        print(json.dumps({'body': body}))
-        ")
-
-        # 查找是否已有预览评论
         API_URL="${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/issues/${PR_NUMBER}/comments"
-        EXISTING_COMMENT_ID=""
 
-        COMMENTS=$(curl -s -H "Authorization: token ${GITHUB_TOKEN}" "$API_URL")
-        EXISTING_COMMENT_ID=$(echo "$COMMENTS" | python3 -c "
+        EXISTING_COMMENT_ID=$(curl -s -H "Authorization: token ${GITHUB_TOKEN}" "$API_URL" | python3 -c "
         import sys, json
         try:
-            comments = json.load(sys.stdin)
-            for c in comments:
-                body = c.get('body', '')
-                if '预览环境已部署' in body and 'Preview URL' not in body:
+            for c in json.load(sys.stdin):
+                if '预览环境已部署' in c.get('body', ''):
                     print(c['id'])
                     break
-        except:
-            print('')
+        except Exception:
+            pass
         ")
 
         if [ -n "$EXISTING_COMMENT_ID" ]; then
-          # 更新已有评论
-          echo "Updating existing comment: $EXISTING_COMMENT_ID"
           curl -s -X PATCH \
             -H "Authorization: token ${GITHUB_TOKEN}" \
             -H "Content-Type: application/json" \
@@ -254,8 +237,6 @@ jobs:
             > /dev/null
           echo "Comment updated"
         else
-          # 发布新评论
-          echo "Creating new comment"
           curl -s -X POST \
             -H "Authorization: token ${GITHUB_TOKEN}" \
             -H "Content-Type: application/json" \
diff --git a/scripts/ci/preview_comment.py b/scripts/ci/preview_comment.py
new file mode 100755
index 000000000..cdf35d07a
--- /dev/null
+++ b/scripts/ci/preview_comment.py
@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+"""生成预览环境PR评论内容"""
+
+import json
+import os
+import sys
+
+
+def generate_deploy_comment(pr_number, preview_url):
+    """生成部署成功的评论内容"""
+    return f"""🚀 **预览环境已部署**
+
+| 项目 | 详情 |
+|------|------|
+| PR号 | #{pr_number} |
+| 预览链接 | [{preview_url}]({preview_url}) |
+| API环境 | staging |
+
+> 💡 预览环境使用 staging API 数据，请勿在预览环境中操作重要数据。
+>
+> 🔄 每次提交新代码后预览环境会自动更新。
+>
+> 🗑️ PR 关闭或合并后，预览环境会自动清理。
+"""
+
+
+def generate_cleanup_comment(pr_number):
+    """生成清理完成的评论内容"""
+    return f"""🗑️ **预览环境已清理**
+
+PR #{pr_number} 已关闭或合并，对应的预览环境已被清理。
+
+> 如有需要，可以重新打开 PR 来重新生成预览环境。
+"""
+
+
+def main():
+    mode = sys.argv[1] if len(sys.argv) > 1 else "deploy"
+    pr_number = os.environ.get("PR_NUMBER", "")
+    preview_url = os.environ.get("PREVIEW_URL", "")
+
+    if mode == "deploy":
+        body = generate_deploy_comment(pr_number, preview_url)
+    elif mode == "cleanup":
+        body = generate_cleanup_comment(pr_number)
+    else:
+        print(f"Unknown mode: {mode}", file=sys.stderr)
+        sys.exit(1)
+
+    print(json.dumps({"body": body}))
+
+
+if __name__ == "__main__":
+    main()