diff --git a/.gitea/workflows/release.yml b/.gitea/workflows/release.yml
index a14069a..4b528c9 100644
--- a/.gitea/workflows/release.yml
+++ b/.gitea/workflows/release.yml
@@ -83,17 +83,25 @@ jobs:
           } > release-notes.md
           cat release-notes.md
 
+      # 重跑幂等：release 已存在时更新说明、清旧附件后重传
       - name: 创建 Release 并上传产物
         run: |
           set -euo pipefail
           API="$SITE/api/v1/repos/$REPO"
           AUTH="Authorization: token ${TOKEN}"
           REQ=$(node -e 'const fs=require("fs");process.stdout.write(JSON.stringify({tag_name:process.env.TAG,name:"pn "+process.env.TAG,body:fs.readFileSync("release-notes.md","utf8")}))')
-          # 同 tag release 已存在（如重跑）时回退为查询
+          # 同 tag release 已存在（如失败重跑）时回退为查询
           REL=$(curl -fsS -X POST "$API/releases" -H "$AUTH" -H 'Content-Type: application/json' -d "$REQ") \
             || REL=$(curl -fsS "$API/releases/tags/${TAG}" -H "$AUTH")
           RID=$(REL="$REL" node -e 'process.stdout.write(String(JSON.parse(process.env.REL).id))')
           echo "==> release id=$RID"
+          # 发布说明以本次构建为准（回退路径下 POST 已冲突，须补写）
+          curl -fsS -X PATCH "$API/releases/$RID" -H "$AUTH" -H 'Content-Type: application/json' -d "$REQ" >/dev/null
+          # 清除旧附件，避免重跑产生同名副本
+          ASSETS=$(curl -fsS "$API/releases/$RID/assets" -H "$AUTH")
+          ASSETS="$ASSETS" node -e 'JSON.parse(process.env.ASSETS).forEach(a=>console.log(a.id))' | while read -r aid; do
+            curl -fsS -X DELETE "$API/releases/$RID/assets/$aid" -H "$AUTH" >/dev/null
+          done
           for f in dist/*; do
             echo "==> 上传 $(basename "$f")"
             curl -fsS -X POST "$API/releases/$RID/assets?name=$(basename "$f")" -H "$AUTH" -F "attachment=@$f" >/dev/null