https://github.com/user-attachments/assets/30d69db2-ef50-48b5-8233-d9a36511b5e8
Builds the second step of the new onboarding flow on top of #22027: the
v2 "Create your workspace" screen, shown inside `/welcome-v2` at the
`WorkspaceCreation` step.
What changed:
- New `SignInUpV2Header` (back chevron + Twenty logo) and
`SignInUpWorkspaceCreationFormV2` (left-aligned title/subtitle, logo
upload, Name + Subdomain fields, "Create workspace"), wired into
`SignInUpV2` for the workspace-creation step.
- When a subdomain is taken, a box now lists 3 server-verified-available
alternatives. Backend `SubdomainAvailabilityDTO` returns
`suggestedSubdomains` via a new `findAvailableSubdomains` helper.
- The shared `useWorkspaceSubdomainField` hook is extended additively
(new `suggestions` + `applySuggestionValue`) so the v1 `/welcome` screen
is untouched.
Reviewer notes:
- `generated-metadata/graphql.ts` was hand-patched (metadata codegen
needs a running server).
- Storybook: `Pages/Auth/SignInUpV2 → WorkspaceCreation`.
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Raphaël Bosi
02120aac42
