OpenAI Codex CLI 0.128.0 Adds /goal: Agentic Loops in the Terminal

Summary

OpenAI's Codex CLI 0.128.0 (released April 30, 2026) introduces a `/goal` command that implements a Ralph-loop-style agentic system. The user sets an objective and the agent loops until it judges the goal complete or its configured token budget is exhausted. Implementation is template-driven — `continuation.md` and `budget_limit.md` prompts are auto-injected at the end of each turn — so the agent's iteration logic is inspectable and patchable rather than hidden behind opaque platform behavior.