A per-garden public link anyone can open read-only, with no login and no OIDC. Backend: - Migration 0004 adds gardens.public_token (nullable, unique over non-NULL). - Owner-only management: GET/POST/DELETE /gardens/:id/share-link (state / enable-or-rotate / disable). The token is stored raw (it must be shown back to the owner) and never selected into the normal garden payload. - Unauthenticated GET /api/v1/public/gardens/:token returns the read-only /full payload — the token is the capability, so no requireAuth and no redirect. The public view drops MyRole and OwnerID to minimize what an anonymous viewer learns. Unknown/rotated/disabled tokens are masked as 404. - assembleFull is extracted from GardenFull so both reads return one shape. Frontend: - /g/$token route with NO auth guard (SPA fallback already serves it), rendering GardenCanvas read-only via usePublicGarden. - Share dialog gains a Public link section: create, copy, regenerate, turn off. Tests: service lifecycle + ACL (owner-only, non-owner masked, rotate/disable invalidation) and the HTTP surface incl. the cookieless public read. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]> Claude-Session: https://claude.ai/code/session_01JdQpdYYsTgtkJBxbcpAszi