Adds a dedicated self-hosting page documenting how to apply an
Enterprise license key, and cross-links it from the related docs.
New page: self-hosting/configuration/license.mdx — "Apply Your License
Key"
Set NEXT_PRIVATE_DOCUMENSO_LICENSE_KEY (Docker Compose / docker run /
.env tabs)
Add a new BullMQ/Redis-backed job provider as an alternative to the
existing Inngest and Local providers. Includes Bull Board UI for job
monitoring at /api/jobs/board (admin-only in production, open in dev).