You need to create your own preamble that you include with every request. I generally have one for each codebase, which includes a style guide, preferred pract

You need to create your own preamble that you include with every request. I generally have one for each codebase, which includes a style guide, preferred practices & design (lots of 'best practices' are cargo culted and the LLM will push them on you even when it doesn't make sense - this helps eliminate those), and declarations of common utility functions that may need to be used.