fix: harden wrapper exits and matrix regressions

scripts/codex-multi-auth.js

@@ -1,6 +1,34 @@
 #!/usr/bin/env node
 
+import { createRequire } from "node:module";
 import { runCodexMultiAuthCli } from "../dist/lib/codex-manager.js";
 
+try {
+	const require = createRequire(import.meta.url);
+	const pkg = require("../package.json");
+	const version = typeof pkg?.version === "string" ? pkg.version.trim() : "";
+	if (version.length > 0) {
+		process.env.CODEX_MULTI_AUTH_CLI_VERSION = version;
+	}
+} catch {
+	// Best effort only.
+}
+
+function parseCliExitCode(value) {
+	if (typeof value === "number" && Number.isInteger(value)) {
+		return value;
+	}
+	if (typeof value === "string") {
+		const trimmed = value.trim();
+		if (/^\d+$/.test(trimmed)) {
+			const parsed = Number.parseInt(trimmed, 10);
+			if (Number.isInteger(parsed)) {
+				return parsed;
+			}
+		}
+	}
+	return 1;
+}
+
 const exitCode = await runCodexMultiAuthCli(process.argv.slice(2));
-process.exitCode = Number.isInteger(exitCode) ? exitCode : 1;
+process.exitCode = parseCliExitCode(exitCode);