By not vibe coding. I do most of the top down design, modules, function, interfaces, classes and things like that. Do most of the small one line fixes, prune the context agressively, and use my mind to plan instead of polluting the LLM context without endless MCP and tool data, and in the end just use it to implement small, self-contained pieces. So, I generate a lot of my code, probably just a little bit less than a vibe coder, but I leverage my brain to save context space for the LLM.

If I need to refactor, I still use the excelent refactor facilities of my IDE, if I am going to generate a lot of repetitive code, I prefer to ask the gent to write a small generator than having it generate it, actually have already dozens of such small scripts, as doing boring stuff with code like visiting the AST and referencing stuff is the kind of code that LLMs love to generate and generate pretty well.