1a8e13f880
Add an explicit registry with capability hooks for migrations, routes, workflows, config, and UI assets. Move FedWiki fully and Stripe's separable store, workflow, and webhook pieces under internal/integrations. Drive startup wiring from declarations, including config validation, secret file pairs, CSRF exemptions, UI composition, and workflow startup. Move integration DB roles and grants into their owning migration streams, and route outbox writes through a shared enqueue helper.