Update 3.X Getting started: Jackson 2 note, plugins, Jakarta example Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Add Swagger 3.X Getting started page, sidebar section, and wording fixes Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Add Swagger Core 3.0 migration guide (from 2.X) Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>