ci: release 已存在时复用（避免同名创建失败）

.gitea/workflows/auto-release.yml

@@ -35,18 +35,27 @@ jobs:
           cp dsh.ico README.md install.cmd uninstall.vbs register-uninstall.ps1 pkg/
           cd pkg && python ../scripts/build-online.py ../dsh-desktop-online.zip
 
-      - name: Create release
+      - name: Create or reuse release
         id: release
         shell: bash
         run: |
           VER="${{ steps.version.outputs.latest }}"
+          TAG="v${VER}"
+          API="https://git.vanusys.com/api/v1/repos/${{ github.repository }}"
+          curl -s -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" "$API/releases/tags/${TAG}" -o exist.json
+          EXIST=$(python -c "import json; d=json.load(open('exist.json')); print(d.get('id',''))")
+          if [ -n "$EXIST" ]; then
+            echo "$EXIST" > release_id.txt
+            echo "reuse existing release $EXIST"
+          else
             BODY="Auto-built by Gitea Actions. dsh version: ${VER}. Online install package (run install.cmd, requires network)."
             curl -s -X POST \
               -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
               -H "Content-Type: application/json" \
-            -d "{\"tag_name\":\"v${VER}\",\"name\":\"DeepSeek Harness v${VER}\",\"body\":\"${BODY}\",\"draft\":false,\"prerelease\":false}" \
-            "https://git.vanusys.com/api/v1/repos/${{ github.repository }}/releases" > release.json
+              -d "{\"tag_name\":\"${TAG}\",\"name\":\"DeepSeek Harness ${TAG}\",\"body\":\"${BODY}\",\"draft\":false,\"prerelease\":false}" \
+              "$API/releases" > release.json
             python -c "import json; print(json.load(open('release.json'))['id'])" > release_id.txt
+          fi
           echo "release_id=$(cat release_id.txt)" >> "$GITHUB_OUTPUT"
 
       - name: Upload asset