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/cli/src/__tests__/spawn-agent-json.test.ts

@@ -1,4 +1,5 @@
-import { describe, expect, test } from 'vitest';
+import { describe, expect, test } from "vitest";
+
 /**
  * B-group tests: validate JSON parsing logic used by spawnAgent.
  *