chore: integrate proman scaffold

- Add proman.yaml with 8 packages in dependency order
- Add @shazhou/proman as devDependency
- Replace root scripts: build/test/check/format → proman commands
- Keep typecheck script for standalone tsc --build

Fixes #27

packages/util-agent/src/__tests__/parseArgv.test.ts

@@ -1,4 +1,5 @@
-import { afterEach, beforeEach, describe, expect, test } from 'vitest';
+import { afterEach, beforeEach, describe, expect, test } from "vitest";
+
 describe("parseArgv empty prompt error message", () => {
   let stderrOutput: string;
   let _exitCode: number | null;