0009: Adopt better-supabase and PermDock from npm
CentraKit moves its Supabase data access onto better-supabase and its roles and permissions onto PermDock, consuming both as published npm packages.
0011: Multi-brand path routing
Every brand is served from one app host with the API, MCP server and docs as path rewrites, and the SaaS app renders each brand through a hidden brand root param.
