diff --git a/scripts/ci/lib-forgejo.sh b/scripts/ci/lib-forgejo.sh
index 6d82338..ade9a81 100644
--- a/scripts/ci/lib-forgejo.sh
+++ b/scripts/ci/lib-forgejo.sh
@@ -50,6 +50,8 @@ PYEOF
 }
 
 # create_release <tag> <body_json_string>  — sets global RELEASE_ID on success.
+# 幂等：若该 tag 的 Release 已存在（重跑发版时 Forgejo 回 409），不再硬失败，
+# 改为取回既有 Release 复用其 id 继续（配合 upload_asset 的覆盖上传，重跑安全）。
 create_release() {
   local tag="$1" body="$2" http_code resp
   echo "==> release: creating Forgejo Release ${tag}"
@@ -60,6 +62,15 @@ create_release() {
     -d "{\"tag_name\":\"${tag}\",\"name\":\"Release ${tag}\",\"body\":${body},\"draft\":false,\"prerelease\":false}")
   resp=$(cat /tmp/release_resp.json)
   echo "==> release: API response (HTTP ${http_code}): ${resp}"
+  if [ "$http_code" = "409" ]; then
+    # Release 已存在（重跑）→ 幂等复用：按 tag 取回既有 Release。
+    echo "==> release: 该 tag 的 Release 已存在，改为复用（幂等重跑）"
+    http_code=$(curl -k -w "%{http_code}" -o /tmp/release_resp.json \
+      -H "Authorization: token ${FORGEJO_TOKEN}" \
+      "${FORGEJO_URL}/api/v1/repos/${GITEA_REPOSITORY}/releases/tags/${tag}")
+    resp=$(cat /tmp/release_resp.json)
+    echo "==> release: 既有 Release 查询 (HTTP ${http_code}): ${resp}"
+  fi
   if [ "$http_code" -lt 200 ] || [ "$http_code" -ge 300 ]; then
     echo "==> release: FAILED — HTTP ${http_code}" >&2
     return 1
@@ -69,8 +80,18 @@ create_release() {
 }
 
 # upload_asset <file>  — requires RELEASE_ID.
+# 幂等：若同名 asset 已存在（重跑），先删旧再传新，避免 Forgejo 409 重名冲突。
 upload_asset() {
-  local file="$1" code
+  local file="$1" code name existing_id
+  name=$(basename "$file")
+  existing_id=$(curl -ks -H "Authorization: token ${FORGEJO_TOKEN}" \
+    "${FORGEJO_URL}/api/v1/repos/${GITEA_REPOSITORY}/releases/${RELEASE_ID}/assets" \
+    | python3 -c "import sys,json; a=json.load(sys.stdin); print(next((str(x['id']) for x in a if x.get('name')==sys.argv[1]), ''))" "$name" 2>/dev/null || true)
+  if [ -n "$existing_id" ]; then
+    echo "==> release: asset ${name} 已存在(id=${existing_id})，先删旧再重传"
+    curl -ks -X DELETE -H "Authorization: token ${FORGEJO_TOKEN}" \
+      "${FORGEJO_URL}/api/v1/repos/${GITEA_REPOSITORY}/releases/${RELEASE_ID}/assets/${existing_id}" >/dev/null || true
+  fi
   code=$(curl -k -w "%{http_code}" -o /tmp/upload_resp.json \
     -X POST "${FORGEJO_URL}/api/v1/repos/${GITEA_REPOSITORY}/releases/${RELEASE_ID}/assets" \
     -H "Authorization: token ${FORGEJO_TOKEN}" \