Throwdowns: the throwdown kit, so a mode is a plugin and the SDK knows no particular mode

Plugins register modes (card, replaces, order, flag, players) and publish documents through
reskate.throwdowns.ui: the setup page, the waiting card, HUD slots themed on the game's HUD_<theme>_*
widgets, the match panel, flags and match restrictions. SmokeyDawg58's native plumbing
(throwdown_menu.cpp and its .inl files) renders them and posts throwdown_ui events back. kit::flag
is the one native flag registration. General services added for it: reskate.files, reskate.ui.dialog,
reskate.skater push/hold/bone_cam, reskate.camera.pad_flight, reskate.physics competition,
reskate.session.world, reskate.tricks feed/gesture, and world entities.

His ten modes are now Lua in his plugin: the rules, referee and wire (td/rules, referee, wire), and
every page and HUD document (td/ui*.lua). Extension/Modes and reskate.modes are gone, along with
every race and 1-UP branch in the SDK. The plugin test drives each mode through kit events.

A native setup page is never written to while it closes into flag placement: its rows are not
republished, the stock page is put back once the exit is over, and the stock Players slider is left
alone while a plugin flag is out. This fixes the crashes on the Deathrace button and on 1-UP's
Confirm.

Runtime/runtime_init.cpp

@@ -12,7 +12,9 @@
 #include "Extension/World/shader_permutation_guard.h"
 #include "Extension/World/shader_registry_guard.h"
 #include "Extension/World/light_table_guard.h"
+#include "Extension/World/guid_table_guard.h"
 #include "Extension/World/stack_check_report.h"
+#include "Extension/World/world_entities.h"
 #include "Extension/Music/music_inject.h"
 #include "Extension/Music/spotify_web.h"
 #include "Extension/Music/plex_web.h"
@@ -341,9 +343,13 @@ extern "C" __declspec(dllexport) BOOL WINAPI DingoSDKDebugInitialize() {
         (void)dingosdk::shader_permutation_guard::install(r.base);
         (void)dingosdk::shader_registry_guard::install(r.base);
         (void)dingosdk::light_table_guard::install(r.base);
+        (void)dingosdk::guid_table_guard::install(r.base);
         (void)dingosdk::load_error_guard::install(r.base);
         (void)dingosdk::texture_handle_limit::install(r.base);
+#if !defined(DINGOSDK_LEAN_PLAYTEST)
         (void)dingosdk::stack_check_report::install(r.base);
+        dingosdk::console::start_memory_trace_from_environment();
+#endif
         (void)dingosdk::music_inject::install(r.base);
         (void)dingosdk::spotify_rows::install(r.base);
         dingosdk::spotify_device::start(); // (the game as a device in the player's Spotify app)
@@ -506,6 +512,7 @@ extern "C" __declspec(dllexport) BOOL WINAPI DingoSDKDebugInitialize() {
         r.native_loading_logging = dingosdk::start_level_loading_logging(r.base,
             [](std::uintptr_t base, unsigned next) noexcept {
                 dingosdk::local_profile_before_level_transition(next);
+                dingosdk::world_entities::before_level_transition(base, next);
                 dingosdk::multiplayer::native_menu_before_level_transition(base, next);
                 dingosdk::multiplayer::throwdown_lab_before_level_transition(next);
             });