GitLab Duo CLI: Agentic AI now in the terminal

What this post added

Introduces GitLab Duo CLI, bringing agentic AI powered by the Duo Agent Platform to the terminal. Highlights its dual operating modes: interactive chat with human-in-the-loop approval and headless mode for automated workflows in runners and scripts. Details the security model with default human-in-the-loop, prompt injection detection, composite identity for auditable actions, and custom instruction files for least privilege AI.