fix: fix bun install bug

sdks/cli-shared/src/index.ts

@@ -0,0 +1,63 @@
+export type InstallCommandBlock = {
+	label: string;
+	commands: string[];
+};
+
+export type NonExecutableBinaryMessageOptions = {
+	binPath: string;
+	trustPackages: string;
+	bunInstallBlocks: InstallCommandBlock[];
+	genericInstallCommands?: string[];
+};
+
+export function isBunRuntime(): boolean {
+  if (typeof process?.versions?.bun === "string") return true;
+  const userAgent = process?.env?.npm_config_user_agent || "";
+  return userAgent.includes("bun/");
+}
+
+const PERMISSION_ERRORS = new Set(["EACCES", "EPERM", "ENOEXEC"]);
+
+export function isPermissionError(error: unknown): boolean {
+  if (!error || typeof error !== "object") return false;
+  const code = (error as { code?: unknown }).code;
+  return typeof code === "string" && PERMISSION_ERRORS.has(code);
+}
+
+export function formatNonExecutableBinaryMessage(
+	options: NonExecutableBinaryMessageOptions,
+): string {
+	const { binPath, trustPackages, bunInstallBlocks, genericInstallCommands } =
+		options;
+
+	const lines = [`sandbox-agent binary is not executable: ${binPath}`];
+
+	if (isBunRuntime()) {
+		lines.push(
+			"Allow Bun to run postinstall scripts for native binaries and reinstall:",
+		);
+		for (const block of bunInstallBlocks) {
+			lines.push(`${block.label}:`);
+			for (const command of block.commands) {
+				lines.push(`  ${command}`);
+			}
+		}
+		lines.push(`Or run: chmod +x "${binPath}"`);
+		return lines.join("\n");
+	}
+
+	lines.push(
+		"Postinstall scripts for native packages did not run, so the binary was left non-executable.",
+	);
+	if (genericInstallCommands && genericInstallCommands.length > 0) {
+		lines.push("Reinstall with scripts enabled:");
+		for (const command of genericInstallCommands) {
+			lines.push(`  ${command}`);
+		}
+	} else {
+		lines.push("Reinstall with scripts enabled for:");
+		lines.push(`  ${trustPackages}`);
+	}
+	lines.push(`Or run: chmod +x "${binPath}"`);
+	return lines.join("\n");
+}