Why build it locally first
A local `/help` route lets the docs evolve in the same repo and release cadence as the product.
That keeps flow changes, support language, and user guidance close to the actual implementation.
It also lets the team shape information architecture before committing to a separate deployment boundary.
How to split later
If `help.justmy.site` becomes the right move, keep the doc-content layer portable and move the `/help` pages plus shared content into a dedicated Next app in the same repo or a separate repo.
The current local help center is intentionally static and lightweight so that extraction later is straightforward.
When that split happens, keep URLs and slugs stable to avoid breaking support links and onboarding references.