feat(mesh): live 45-kernel observability — per-kernel status colours (green/amber/red from /api/<organ>/v3/kernels), heartbeat pulse on each dot, last-5-heartbeats in kernel side panel, 45-kernel signed-receipt ticker. ADDITIVE. Doctrine v11 749/14/163. Sign: Yachay

feat: Mesh Cathedral — Ouroboros loop, 5 chakras, 45 kernels, live receipts