OpenAI Codex CLI adds worktrees, agent communication

Terminal-native coding agents are transitioning from simple script execution assistants into autonomous, multi-agent engineering collaborators that operate directly on your repository.

* Git worktree isolation addresses a primary barrier to autonomous CLI agents by preventing uncommitted workspace corruption during parallel code generation.

* Cross-task at-mentions and agent-to-agent communication allow specialized subagents to coordinate architecture, testing, and implementation without manual developer relay.

* GPT-6 Astra retrieval integration helps maintain grounded codebase context across large repositories without exhausting token budgets.

* Native voice support in the terminal indicates a push toward multimodal workflows even in traditional text-first developer environments.