You do not build an operating system up front. You start with a couple of files, and they grow into one as your projects teach you what to keep.
enough to not lose your thread.
a new file appears when a real pain calls for one.
your own system, grown not designed.
the new file each time is highlighted. The faint ones are where it can grow, not a checklist for today.
You never add a file because a guide said so. A new home shows up the moment a real pain makes you want one.
Not later. By then the reason is gone.
Each fact in one place, so you always know where to look.
When the AI is off, fix what it reads, not your wording.