feat(beyond-33): add navigation structure and getting started overview

- Add Beyond 33 tab with all 29 concept pages organized by category - Add What's Next section linking to Beyond 33 from main concepts - Add Beyond 33 overview page explaining the extended curriculum - Update scope-and-closures to link to hoisting deep dive - Update gitignore for project configuration

Leonardo Maldonado committed on Jan 6, 2026, 10:03 PM

Showing 4 changed files +257 additions -5 deletions

M .gitignore -5

A docs/beyond/getting-started/overview.mdx +152

M docs/concepts/scope-and-closures.mdx +3

M docs/docs.json +102