Extract license content from contributing.mdx into its own first-class
docs/license.mdx page. Add prominent warnings about rebranding/renaming
being prohibited without a commercial license, an enforcement section,
and expanded commercial use restrictions.
Update README.md license section to reflect the dual-license model
(AGPL-3.0 for non-commercial, commercial license required for business
use). Previously it incorrectly stated commercial use was allowed under
AGPL alone.
Update cross-references in documentation.mdx and getting-started.mdx to
point to the new /license page.
e23f1cf85b
