Short version: your project is yours.
- Content, code, and data created for your site belong to you, and the export proves it.
- Domains are yours and transfer under normal registrar rules — including a .com we registered for you.
- Leads and form submissions live in your slice's private storage. Only your site (and your engineer, working for you) touches them; they're never shared across customers or used for anything else.
The fine print version is on the terms and privacy pages, written to say the same thing.