Add "Request Access" flow for inaccessible spaces: authenticated users
see all spaces in the dropdown (categorized as Your/Public/Discover),
can request access to restricted spaces, and space owners get in-app
notification badges with inline approve/deny actions.
- API: GET /api/spaces returns accessible/relationship/pendingRequest fields
- API: POST/PATCH /api/spaces/:slug/access-requests + GET /notifications
- Space switcher: 3-section layout with Discover section + Request Access modal
- Identity: notification polling (30s), red badge on avatar, approve/deny in dropdown
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Jeff Emmett
286f08fadb