* lus update  compiles but not run

* Game runs, fix demo bug

* Switch lus to port-maintenance branch

* menu_items: fix the real-bug-tier compiler warnings (#691 batch 1)

Six fixes, all in menu_items.c, all verified by menu playtest on macOS:

- BSWAP16(*color0++) advanced the pointer twice per pixel on little-endian
  builds (the macro evaluates its argument twice) and mixed bytes from two
  different pixels. Read first, increment separately. Note: this function
  (func_8009A9FC) currently has no callers, so the corruption was latent,
  not live.
- func_8009B9D0 fell off the end on a lookup miss, returning garbage (the
  existing code comment already suspected this). The miss path now returns
  the display list head unchanged, i.e. draws nothing.
- update_ok_menu_item read an uninitialized stack slot for unknown menu
  item types; now selects an explicit no-animation value, matching what
  the garbage read did in practice.
- pause_menu_item_box_cursor: removed the three empty 'if (x2);' matching
  artifacts. The x/y/z spin state itself is untouched.
- func_800A1FB0: initialized var_s4/var_s5 against the guarded-but-warned
  switch default.
- func_800A54EC: initialized the pause cursor position pointer against its
  unreachable mode-switch default (would have been a null-deref class bug
  if mode values ever grew).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* collision: define the G_ENDDL opcode shifts, return 0 when no tyre surface found

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* replays: cast staff-ghost pointer comparisons, return 0 for empty ghost buffer

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* update_objects: return 0 from conditional step helpers, fix TLUT pointer comparison, init train draw distances

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* render_player: remove the impossible lamp range (vanilla bug, never glowed on N64 either)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* math_util_2: return the vector, not the address of the parameter slot

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Crab: remove inner declaration shadowing the initialized objectIndex

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* editor: honor InverseMatrix failure (bool was compared against 2, always true)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Track.h: drop dead null checks on array members

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* shells: drop always-true angle and surface gates (behavior unchanged, s16 made them tautological)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* particles: make the no-return particle setters void

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* effects/stubs/skybox/main: align signatures with functions that return nothing

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* menus/save: type the pak status variable as s32, return BAD_READ on the fall-off path

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* audio: remove uninitialized-read matching artifacts, init isSound

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* code_80005FD0/code_80086E70: init dead bomb kart pointer and the no_init variable

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* port/engine UI: fix printf-style format types and non-literal format string

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* render_objects: feed the unused texture param to the uninitialized img walker

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Format the changed lines per .clang-format

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Address review: strip explanatory comments, drop vec3f pointer returns

Comments moved to the PR record; the one flagged worth keeping stays.
vec3f_set_xyz/normalize/cross_product return void now since the out
argument is the interface and nothing used the pointer.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* Update actors_extended.c

* Add checkbox for 'Shells Shoot Straight' option

* Update render_player.c

* Update PortMenu.cpp

* Update render_player.c

* Update actors_extended.c

* Update render_player.c

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Co-authored-by: MegaMech <MegaMech@users.noreply.github.com>

* Make the reset button reliable from any screen

Pressing reset repeatedly near app start could do nothing, fade the music
with no reset, or bounce the press-start screen back to itself. Three
defects in the old handler:

- It ran from the ImGui widget, racing the menu state machine; a press
  landing mid-fade was re-advanced by the in-flight transition (the
  press-start loop).
- It always wrote gGamestateNext = MAIN_MENU_FROM_QUIT; once the game was
  already in that state a repeat write is swallowed by the != guard in
  main.c, so nothing happened.
- CM_ResetAudio ran unconditionally, so the music faded even when the
  reset was swallowed.

The widget now only sets an atomic request flag; ApplyPendingReset (top of
push_frame, on the game loop) performs the reset. It alternates between
the two identical FROM_QUIT gamestates so every press trips the gamestate
switch, and re-enters the menus through the intro's own transition
protocol (FADE_MODE_LOGO -> setup_menus rebuild + fresh fade-in), which
replaces any in-flight transition. Audio only fades when a reset actually
executes. The dead gSkipIntro switch in the old handler (an unconditional
override below it always won) is gone; behavior is unchanged: reset lands
on the logo intro, or the start menu in debug mode.

Play-verified: hammering reset during the splash screens restarts the
logo every press; reset mid-fade after press-start no longer loops back;
resets from the main menu and mid-race work as before.

* Honor gSkipIntro when picking the post-reset screen

Review feedback on #719: restore the gSkipIntro switch from the old
handler instead of hard-coding the logo intro, keeping the debug-mode
override on top (no else), matching the boot-time logic in main().

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Co-authored-by: MegaMech <MegaMech@users.noreply.github.com>

* some start of refactor

* Update SetFlags.cmake

* Update SetCmakeVar.cmake

* Update SetFlags.cmake

* Fix error int-convertion

* more refactor

* clean up include and source file

* fix link of lib

* fix a warning

* fix include in src/actors

* fix include in src/debug

* fix include in src/ending

* fix include in src/engine/actors

* fix include in src/engine/cameras

* fix include in src/engine/editor

* fix include in src/engine/objects

* fix include in src/engine/tracks

* fix include in src/port/ui

* fix include in src/racing

* fix include in src/engine/vehicles

* fix include in subfolder of src/engine

* fix include in src/engine

* fix include in src/enhancements

* fix include in src

* fix switch

* invert common and findlib

* Update SetFlags.cmake

* clean up some workflow

* some splification

* Update build.sh

* Update Game.h

* add header back

* Delete test_check.cmake

* continue

* Update common.cmake

* Fix warnings regarding ambigious typings

* Revert struct Collision name change

* Remove duplicate Switch::Init(PostInit) call.

It was called multiple times, causing multiple applet hooks (that all point to the same callback address) to be registered. For some reason, the OS started spamming us with FocusUpdate events via that hook because of that.

* Hide fullscreen and app data directory button on Switch

* merge upstream commit to fix some bug

* fix merge

* add a local user for the merge

* Update main.yml

* revert main.yml

* fix windows CI

* fix switch build

* fix windows and try a fix for switch

* fix windows build

macOS uses COREAUDIO as the default audio backend, but the
combobox display map in MenuTypes.h only contained SDL and
WASAPI. This causes an unordered_map::at crash on first
frame draw when the Audio API dropdown tries to render.
Fixes the menu crash portion of #681.

* Fix editor loading and finishline duplication

* Update SceneManager.cpp