Cook onion, mushrooms, and bok choy until golden; set aside.
In the same pot, sauté celery, bay leaves, garlic, and ginger for 3 minutes.
Add turmeric and black pepper; stir for 30 seconds.
Pour in broth; simmer for 20 minutes.
Add lime juice, salt, and cilantro; adjust seasoning.
Assemble noodles and veggies in bowls, pour broth over top, and serve hot.
