Redesign SaaS platform from read-only viewer into vendor management
plane with tenant provisioning, license management, and customer
self-service. Two personas (vendor/customer), pluggable provisioning
interface (Docker first, K8s later), per-tenant server instances.
User stories tracked as Gitea issues #40-#51. Closes#37.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>