- migration 028: drop global UNIQUE(forms.slug), add
UNIQUE(space_id, slug); schema.sql mirrored. Form slugs are now
unique per space (fixes cross-tenant slug squatting)
- getPublicForm now takes { space, slug }: resolves the space by its
slug then the form by space_id + slug (maybeSingle)
- route moved app/f/[slug] -> app/f/[space]/[slug]; the public client
submits by formId (slug is no longer globally unambiguous) and the
sign-in link round-trips the full /f/space/slug path
- forms-guard returns the space slug; the builder + forms list show
the full /f/<space>/<slug> share URL; new/edit pass it through
- middleware /f allowlist already covers /f/<space>/<slug>
- getPublicFormSchema + tests updated (333 pass)
build verified (Compiled successfully, exit 0; new route present). No deploy.