🐛 fix(workflow): 避免发布流程在线下载 Rust 目标

- 根据 runner 上已可用的 Rust host target 或已安装 target 选择构建目标
- 去掉 rustup target add，避免网络受限环境在下载 rust-std 时卡住
- 将选中的构建目标写入临时文件并传递给发布打包脚本

.gitea/workflows/release.yml

@@ -82,9 +82,15 @@ jobs:
             curl --proto '=https' --tlsv1.2 -fsSL https://sh.rustup.rs | sh -s -- -y --profile minimal
             . "$HOME/.cargo/env"
           fi
-          if command -v rustup >/dev/null 2>&1; then
-            rustup target list --installed | grep -qx 'x86_64-unknown-linux-gnu' || rustup target add x86_64-unknown-linux-gnu
+          HOST_TARGET="$(rustc -vV | sed -n 's/^host: //p')"
+          BUILD_TARGET="$HOST_TARGET"
+          if [ "$HOST_TARGET" != "x86_64-unknown-linux-gnu" ] && command -v rustup >/dev/null 2>&1; then
+            if rustup target list --installed | grep -qx 'x86_64-unknown-linux-gnu'; then
+              BUILD_TARGET="x86_64-unknown-linux-gnu"
+            fi
           fi
+          printf '%s' "$BUILD_TARGET" > /tmp/lightops-build-target
+          echo "使用 Rust 构建目标: $BUILD_TARGET"
           rustc -V
           cargo -V
 
@@ -112,7 +118,12 @@ jobs:
           cd lightops-src
           TAG="$(cat /tmp/lightops-release-tag)"
           VERSION="${TAG#v}"
-          bash scripts/build-release.sh --version "$VERSION" --target x86_64-unknown-linux-gnu
+          BUILD_TARGET="$(cat /tmp/lightops-build-target 2>/dev/null || true)"
+          if [ -z "$BUILD_TARGET" ]; then
+            BUILD_TARGET="$(rustc -vV | sed -n 's/^host: //p')"
+          fi
+          echo "构建发布目标: $BUILD_TARGET"
+          bash scripts/build-release.sh --version "$VERSION" --target "$BUILD_TARGET"
 
       - name: 发布到 Gitea Release
         env: