Adds an intermediate modal when creating a space: name/slug editing with
availability check, description, visibility radio cards, discoverable
toggle, member search with @username lookup and email invites, and a
shareable invite link generated post-creation.
Server: adds discoverable field to CommunityMeta, extends PATCH /:slug,
adds POST /:slug/invites for generic invite token creation.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Jeff Emmett
73cc1d1cc4