Gemini's context is very long, so I can feed it full files. I do the same with Claude, but I may need to start from scratch various times, so Gemini serves as memory (and is also good that Gemini has almost no hallucinations, so it's great as a code reviewer for Claude's edits).
Yeah right now I just dump entire files at it too. After 100-200k tokens I just restart. Not because the LLM is hallucinating (which it is not) but I like the feeling of treating each restart as a new feature checkpoint.