Make production builds bootstrap agent dependencies

jenkins/Jenkinsfile.production-api-build

@@ -63,6 +63,10 @@ pipeline {
           bash -lc '
             set -euo pipefail
             mkdir -p "${CARGO_HOME}" "${CARGO_TARGET_DIR}" "${SCCACHE_DIR}"
+            if ! command -v sccache >/dev/null 2>&1; then
+              echo "[api-build] 未找到 sccache，改用 rustc 直接构建。"
+              unset RUSTC_WRAPPER
+            fi
             SOURCE_BRANCH="${SOURCE_BRANCH}" SOURCE_COMMIT="${SOURCE_COMMIT}" \
             npm run build:production-release -- --component api-server --name "${EFFECTIVE_BUILD_VERSION}"
           '