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Measured by the Decoder today: (B) from the menu to the title and (A) back returns to the item you left, not to a default; their control passed first, two delivery-confirmed DOWNs moving the cursor exactly two items before the round trip. The port reset to initial_focus on every entry, so a player who moved to EXTRAS, pressed (B) then (A) landed back on NEW GAME. MenuFlow.enter() now consults opening_focus(), and a new set_focus() writes the memory. set_focus() exists because two call sites set focus -- a cursor move and (B)'s restore -- and a memory updated at only one of them is right until the player uses the other. focus_persists is true on main_menu and nowhere else, and the scope is the authored part. wrap generalised because it was measured on two screens; this was measured on one. Here that is stronger than a preference: extras opens on MISSION SELECT as a MEASURED initial focus, so a menu-wide memory would have silently replaced a measured value with a derived one. Both halves are in one artifact, because a one-sided test passes a port that quietly generalised: the menu returns to ptbtn05 after the round trip, and extras opens on ptbtn11 both times despite being left on ptbtn12. contract-check asserts the pair -- on where measured, off elsewhere -- and fails its known negative. Eleven checks. Not assumed: whether the memory survives a reboot, or whether any other screen has it. Their reach is one boot, one round trip, one direction. The finding also reframes this morning's initial-focus warning without settling it -- if focus persists, a reading not taken on a fresh boot's first entry is measuring history. NEW GAME stays authored, on its own reasoning. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01N7FiFFFwbvG2uxdcEh8HyF
Authored decisions
Everything here is a decision we made, not something the disc said. It is
hand-written, committed, and survives a re-export — unlike export/, which is
regenerated wholesale and must never be hand-edited.
Every entry carries a why. When the RE agent decodes the real answer, delete
the entry and let the exporter emit it; that deletion is the measure of
progress.
See docs/FORMAT.md for the schemas and docs/BLOCKED.md for which HANDOFF
question each placeholder is standing in for.