fix(cli): dynamic import @inquirer modules to resolve CJS/ESM conflict

[ankit-thesys]

Summary

• Convert static @inquirer/prompts and @inquirer/core imports to dynamic await import() in resolve-args.ts to fix CJS/ESM module resolution errors
• Move @openuidev/cli from dependencies to devDependencies in the example app
• Use useLayoutEffect instead of useEffect for theme detection in the example app to reduce flash-of-wrong-theme

Motivation

The @inquirer/prompts package is ESM-only, but the CLI's compiled output runs in a CJS-compatible context. Static imports at the top of the file fail at module resolution time. Dynamic imports defer loading until the function is actually called, avoiding the CJS/ESM conflict.

Test plan

• pnpm --filter @openuidev/cli build succeeds
• Running npx create-openui-app prompts work correctly
• Example app examples/openui-chat builds and runs without errors

🤖 Generated with Claude Code