BrainOS is the "second brain" folder at C:\Users\annet\BrainOS. It held ten memory files (a dashboard, promises, next actions, waiting-on, pending questions, decisions, and a few logs) that Charlie was supposed to read at the start of each session and surface open items from.

Two things turned out to be true. First, nothing in the automated startup actually reads BrainOS anymore, so it was running on a written rule that had quietly stopped being followed. Second, its files went cold in May and never came back. When we looked closely, BrainOS was one of three different systems all tracking the same handful of things, and it was the oldest copy.

The audit found only four items across all ten files that were genuinely unique and still open. All four are now preserved in the live system. So BrainOS is safe to retire, which is what we're doing.