Add integrations workflow with SAST and best practices checks#20

Draft

Copilot wants to merge 3 commits intomainfrom

copilot/add-ai-toolkit-security-workflow

Commits on Feb 18, 2026

Initial plan
Copilot
committed
Add Full Stack AI Toolkit + Security + Best Practices workflow and config

Copilot
and
lippytm
committed
Address code review feedback - clarify alternative env vars and add job independence comments

Copilot
and
lippytm
committed