The campaign brain.
Every NPC, place, item, faction and thread, with the session it came from and who said it. Search it during prep or mid-scene. It's the part of the campaign that remembers.
It asks before it writes. Every single time.
Inergy proposes. You approve. Nothing enters your canon on its own — not an NPC, not a detail, not a correction. It's secret-aware, so the things you're keeping from your players stay on your side of the screen.
A tool that quietly edits your world is worse than no tool at all. So this one doesn't.