Codex

Draft → Bug Pass → Polish → Final. It comes with a standing directive: Savi defines the game top-tab by top-tab, ends with the questions she needs answered, then builds the phase rail top-down — and anything you say mid-phase gets filed into the right phase instead of derailing the one she's on. The panel is read-only on purpose. Savi is the only author; you read it to catch mistakes early, and Copy visible / All pages hand you the whole document as markdown for keeping outside the game. Anything Savi writes or changes since your last look glows until you've read it — a count in the title bar, dots on the tabs and phases, a marker on the page itself. Drag it, resize it, scale the type — it remembers where you left it. Install it, then say "/codex".