Watch your modules provision while you sign up

When you arrive at /register from the Wally build modal, the page splits into two columns: the signup form on the left, and a live preview of the modules being provisioned on the right.

As you fill in fields (Name → Email → Password → Confirm), modules flip from "Provisioning…" to "Ready" one at a time. It's UI theater — the actual provisioning callable runs after submit — but it makes the wait feel productive and shows you exactly what your workspace will contain before you commit.

After submit, every module you saw in the preview gets stamped onto your org doc as activeOrgModules.{key} = true. Each module has its own onModuleActivated trigger that seeds sample data so your first /welcome page is populated, not empty.

The preview reads from the pendingOrg payload that the Wally modal stashed in sessionStorage. If you arrive at /register directly (no modal), the form renders single-column and the preview is hidden — there's nothing to preview because no modules were pre-selected.