chore: import upstream snapshot with attribution

.github/prereleases/upload.mjs

@@ -0,0 +1,50 @@
+import { execSync, spawnSync } from "node:child_process";
+import fs from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const projectRoot = path.resolve(__dirname, "../..");
+
+function getPackagePaths() {
+	const stdout = execSync(
+		'pnpm list --filter="./packages/*" --recursive --depth=-1 --parseable',
+		{ cwd: projectRoot, encoding: "utf8" }
+	);
+	return stdout.split("\n").filter((pkgPath) => path.isAbsolute(pkgPath));
+}
+
+function getPackage(pkgPath) {
+	const json = fs.readFileSync(path.join(pkgPath, "package.json"), "utf8");
+	return {
+		path: pkgPath,
+		json: JSON.parse(json),
+	};
+}
+
+function getPackages() {
+	return getPackagePaths().map(getPackage);
+}
+
+export function getPackagesForPrerelease() {
+	return getPackages().filter((pkg) => pkg.json["workers-sdk"]?.prerelease);
+}
+
+const pkgs = getPackagesForPrerelease();
+
+spawnSync(
+	"pnpm",
+	[
+		"dlx",
+		"pkg-pr-new",
+		"publish",
+		"--pnpm",
+		"--compact",
+		"--no-template",
+		...pkgs.map((pkg) => pkg.path),
+	],
+	{
+		stdio: "inherit",
+	}
+);