feat: proper windows support

tests/ci_test/BUILD.bazel

@@ -2,7 +2,26 @@ load("@rules_shell//shell:sh_test.bzl", "sh_test")
 
 sh_test(
     name = "phase8_ci_matrix_shape_test",
+    size = "small",
     srcs = ["phase8_ci_matrix_shape_test.sh"],
     args = ["$(location //.github/workflows:ci.yml)"],
     data = ["//.github/workflows:ci.yml"],
 )
+
+sh_test(
+    name = "native_wrapper_shape_test",
+    size = "small",
+    srcs = ["verify_native_wrapper_shape.sh"],
+    args = [
+        "$(location //tests/binary_test:configured_launcher_bin)",
+        "$(location //tests/script_test:workspace_flagged_script)",
+        "$(location //tests/js_compat_test:compat_devserver)",
+        "$(location //tests/bun_test_test:configured_suite)",
+    ],
+    data = [
+        "//tests/binary_test:configured_launcher_bin",
+        "//tests/bun_test_test:configured_suite",
+        "//tests/js_compat_test:compat_devserver",
+        "//tests/script_test:workspace_flagged_script",
+    ],
+)

tests/ci_test/verify_native_wrapper_shape.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+python3 - "$@" <<'PY'
+import pathlib
+import sys
+
+windows = sys.platform.startswith("win")
+
+for launcher in sys.argv[1:]:
+    suffix = pathlib.Path(launcher).suffix.lower()
+    if windows:
+        if suffix != ".cmd":
+            raise SystemExit(f"expected .cmd launcher on Windows: {launcher}")
+    elif suffix == ".sh":
+        raise SystemExit(f"unexpected .sh launcher executable: {launcher}")
+PY