How context engineering turned Codex into my whole dev team — while cutting token waste

One night I hit the token limit with Codex and realized most of the cost was coming from context reloading, not actual work. So I started experimenting with a small context engine around it: - persistent memory - context planning - failure tracking - task-specific memory - and eventually domain “mods” (UX, frontend, etc) At the end it stopped feeling like using an assistant and like working with a small de team. The article goes through all the iterations (some of them a bit chaotic, not gonna lie). Curious to hear how others here are dealing with context / token usage when vibe coding.