Fix dev Rust SpacetimeDB readiness probe

scripts/dev-rust-stack.sh

@@ -96,12 +96,23 @@ is_spacetime_ready() {
   local root_dir="$2"
   local output
 
-  if ! output="$(spacetime --root-dir="${root_dir}" server ping "${server}" 2>&1)"; then
-    return 1
+  if output="$(spacetime --root-dir="${root_dir}" server ping "${server}" 2>&1)" &&
+    [[ "${output}" == *"Server is online:"* ]]; then
+    return 0
   fi
 
-  # SpacetimeDB CLI 2.1.0 在 502 Bad Gateway 时仍可能返回 0，不能只依赖退出码。
-  [[ "${output}" == *"Server is online:"* ]]
+  # SpacetimeDB CLI 2.1.0 在 Windows 下可能对已监听的 standalone 返回 502；
+  # 直接探测 HTTP 健康端点，避免 npm run dev:rust 卡在“等待 SpacetimeDB 就绪”。
+  node -e '
+const target = new URL("/v1/ping", process.argv[1]);
+const client = target.protocol === "https:" ? require("https") : require("http");
+const request = client.get(target, { timeout: 1000 }, (response) => {
+  response.resume();
+  process.exit(response.statusCode >= 200 && response.statusCode < 300 ? 0 : 1);
+});
+request.on("timeout", () => request.destroy(new Error("timeout")));
+request.on("error", () => process.exit(1));
+' "${server}" >/dev/null 2>&1
 }
 
 describe_spacetime_root_owner() {