🐛 fix(ci): 为前端产物下载增加重试保护

- 为 build 阶段的 frontend-dist 下载增加失败清理和一次自动重试
- 将前端产物固定下载到 frontend-artifact 目录并在解压前校验 tar 文件存在
- 同步加固 dev 与 release 工作流，降低单个 runner 下载抖动导致的误报失败

.github/workflows/dev-build.yml

@@ -281,17 +281,32 @@ jobs:
           go-version-file: 'go.mod'
 
       - name: Download frontend dist
+        id: download_frontend_dist
+        continue-on-error: true
         uses: actions/download-artifact@v7
         with:
           name: frontend-dist
-          path: .
+          path: frontend-artifact
+
+      - name: Reset failed frontend dist download
+        if: steps.download_frontend_dist.outcome != 'success'
+        shell: bash
+        run: rm -rf frontend-artifact
+
+      - name: Retry frontend dist download
+        if: steps.download_frontend_dist.outcome != 'success'
+        uses: actions/download-artifact@v7
+        with:
+          name: frontend-dist
+          path: frontend-artifact
 
       - name: Extract frontend dist
         shell: bash
         run: |
           set -euo pipefail
           mkdir -p frontend/dist
-          tar -xf frontend-dist.tar -C frontend/dist
+          test -s frontend-artifact/frontend-dist.tar
+          tar -xf frontend-artifact/frontend-dist.tar -C frontend/dist
           test -s frontend/dist/index.html
 
       - name: Install UPX (Windows)

.github/workflows/release.yml

@@ -286,17 +286,32 @@ jobs:
           go-version-file: 'go.mod'
 
       - name: Download frontend dist
+        id: download_frontend_dist
+        continue-on-error: true
         uses: actions/download-artifact@v7
         with:
           name: frontend-dist
-          path: .
+          path: frontend-artifact
+
+      - name: Reset failed frontend dist download
+        if: steps.download_frontend_dist.outcome != 'success'
+        shell: bash
+        run: rm -rf frontend-artifact
+
+      - name: Retry frontend dist download
+        if: steps.download_frontend_dist.outcome != 'success'
+        uses: actions/download-artifact@v7
+        with:
+          name: frontend-dist
+          path: frontend-artifact
 
       - name: Extract frontend dist
         shell: bash
         run: |
           set -euo pipefail
           mkdir -p frontend/dist
-          tar -xf frontend-dist.tar -C frontend/dist
+          test -s frontend-artifact/frontend-dist.tar
+          tar -xf frontend-artifact/frontend-dist.tar -C frontend/dist
           test -s frontend/dist/index.html
 
       - name: Install UPX (Windows)