diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 410d952..59de6f7 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -2,6 +2,12 @@ name: release-abi
 on:
   push:
     tags: ['v*']
+  # 手动重跑（tag 已存在但 release 缺失时用；tag 删+重建同 sha 不会重新触发）
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 要发布的 tag（须已存在，如 v0.2.18）
+        required: true
 permissions:
   contents: write
 jobs:
@@ -9,8 +15,10 @@ jobs:
     runs-on: ubuntu-latest
     env:
       GH_TOKEN: ${{ github.token }}
+      RELEASE_TAG: ${{ inputs.tag || github.ref_name }}
     steps:
       - uses: actions/checkout@v4
+        with: { ref: "${{ inputs.tag || github.ref }}" }
       - name: 下载 ABI 依赖
         env: { GH_TOKEN: "${{ secrets.GITHUB_TOKEN }}" }
         run: ./ci/deps.sh
@@ -19,7 +27,7 @@ jobs:
       - name: 打包 ABI 产物
         run: |
           set -euo pipefail
-          v="${GITHUB_REF_NAME}"
+          v="${RELEASE_TAG:-${GITHUB_REF_NAME}}"
           d="kvspace-c-abi-$v-linux-x86_64"
           mkdir -p "$d/include" "$d/lib"
           # 头：本仓无公共头（内部头在 src/），权威 ABI 头在 kvspace 仓 → 递归整目录
@@ -32,4 +40,4 @@ jobs:
           tar czf "$d.tar.gz" "$d"
           sha256sum "$d.tar.gz" > SHA256SUMS
       - name: 发布 release
-        run: gh release create "${GITHUB_REF_NAME}" kvspace-c-abi-*.tar.gz SHA256SUMS --generate-notes
+        run: gh release create "${RELEASE_TAG:-${GITHUB_REF_NAME}}" kvspace-c-abi-*.tar.gz SHA256SUMS --generate-notes