Widescreen experiment: native render size via dxwrapper, classic menus

- mods/widescreen: redirect the world view's reads of the 1024.0/768.0
  constants and the 3D ortho extents to our variables; render size =
  monitor; relocate the world view's tile draw list (1750 entries, no
  bounds check) into an enlarged object (16384 entries).
- mods/dxwrapper: route DirectDraw through dxwrapper (Dd7to9, D3D9) since
  Windows' D3D7 cannot render to targets larger than 2048; fix the game's
  device info GUID pointer that dxwrapper's enumeration leaves invalid.
  Pinned release fetched by CMake (hash-checked), installed next to the DLL.
- Main menu (UI thread) and loading screen render in a 1024x768 viewport
  and are presented scaled ("classic" layout); in-game uses the full size.
- re/patch: verified code patches (operand redirect, push immediates,
  displacements) and startup hooks; build.ps1/CMake download fixes.

In-game view untested yet; HUD still at the top-left.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

src/re/dllmain.cpp

@@ -10,6 +10,7 @@
 #include "re/config.h"
 #include "re/hook.h"
 #include "re/log.h"
+#include "re/patch.h"
 
 namespace {
 
@@ -58,6 +59,7 @@ void Startup(HMODULE module) {
         re::Log(IsDebuggerPresent() ? "debugger attached" : "no debugger, continuing");
     }
     re::InstallHooks();
+    re::RunStartupFunctions();
 }
 
 } // namespace