# Which main-menu destinations live INSIDE GP_TITLE? ✅ ONLY EXTRAS.
# 2026-08-31. Static, disc-wide over GP_TITLE.pak.
#
# THE QUESTION IT SERVES: boot-config-and-gamepart-registry.md records a
# count-match for the title part's event numbers -- "Ⓑ = event 0, four menu items
# load an external archive, EXTRAS stays inside GP_TITLE" -- and marks it
# explicitly as an observation, NOT a decode, because nothing showed that any
# particular event is a particular menu row. Half of it is disc-checkable: does
# EXTRAS alone live inside GP_TITLE?
#
# ✅ EVERY BUTTON RECORD IN GP_TITLE.pak, all 16 entries
# (examples/gp_title_buttons.rs):
#
#   entry  2/3   ptbtn00, ptbtn00f                       -- the PRESS (A) plate
#   entry  5/8   ptbtn01..05 + f variants + ptbtn02b     -- MAIN MENU, 5 items
#   entry  6/9   ptbtn11..13 + f variants                -- EXTRAS, 3 items
#
# Three button screens, and no fourth. There is NO DIFFICULTY build in GP_TITLE,
# and DIFFICULTY is what NEW GAME opens (menu-navigation-semantics.md).
#
# ✅ AND THE OTHER FOUR DESTINATIONS HAVE THEIR OWN ARCHIVES on the disc:
#   OPTIONS      -> GP_OPTIONS.pak
#   LOAD GAME    -> GP_SAVE_LOAD.pak
#   TUTORIAL     -> GP_TUTORIAL.pak
#   NEW GAME     -> DIFFICULTY, which is NOT in GP_TITLE (see below)
# while EXTRAS' own two items are GP_MISSION_SELECT.pak and GP_MOVIE_THEATER.pak
# -- so EXTRAS is a screen that stays inside GP_TITLE and whose CHILDREN leave it.
#
# => THE STRUCTURAL HALF OF THE COUNT-MATCH HAS DISC SUPPORT: exactly one
#    main-menu destination is internal to GP_TITLE, and it is EXTRAS.
#
# ⚠️ THIS IS STILL NOT A DECODE OF THE EVENT NUMBERS. It shows the SHAPE the
# count-match asserts is real on the disc; it does not show that event 3 is a
# particular row, and the page's own warning stands. What changes is that the
# "one event elsewhere, four to LOADING" pattern now matches a disc fact rather
# than only a count.
#
################################################################################
# ❔ NOT LOCATED: where the DIFFICULTY build lives.
#
# Searched every .pak on the disc for a build with EXACTLY 8 button records --
# four items (EASY / NORMAL / HARD / BACK) with `f` focus variants, the shape
# GP_TITLE's own screens use. Found in only five archives, none of them
# plausible: GP_DEBRIEFING_PILOTLOG, GP_DIALOG, GP_GAMEOVER, GP_OPTIONS,
# GP_PAUSE_MENU. Nothing in GP_SYSTEM, GP_SAVE_LOAD, GP_TUTORIAL,
# GP_MISSION_SELECT or GP_MOVIE_THEATER.
#
# ⚠️ REACH, and the assumption that failed is mine: I assumed DIFFICULTY's four
# items are 8 button records because GP_TITLE's screens pair every button with an
# `f`. They may not be -- BACK may not be a button record, the names may not
# contain "btn" at all, or the screen may not parse as a build. So the negative
# is "not an 8-record btn-named build anywhere on the disc", which is narrower
# than "not found".
