feat: add Semantic Engineering docs section#80

Draft

jonathanprozzi wants to merge 2 commits intomainfrom

jp/eng-10545-docs-refinement-for-agentic-developer-quickstartdeveloper

Commits on Apr 2, 2026

feat: add Semantic Engineering docs section (ENG-10545)

jonathanprozzi
and
claude
committed
fix: add icon and reposition Semantic Engineering in sidebar

jonathanprozzi
and
claude
committed