You get that association that is relevant to your project only if you can cram the whole codebase. Otherwise it is making rough estimates and some of the time that seems to be where the models fail.

It can only be fully resolved with either infinite context length, or doing it similar to how humans do it - add some LSP "color" to the code tokens.

You can get a feel of what LLMs deal with when you try opening 3000 lines of code in a simple text editor and try to do something. May work for simple fixes, but not whole codebase refactors. Only ultra skilled humans can be productive in it (using my subjective definition of "productive")