Remove dxwrapper; test scripts focus the game window

The default render size (1835x768) is below Direct3D 7's 2048 limit, so the
D3D7 -> D3D9 wrapper and its device-info workaround are no longer needed.
The game pauses start-up until its window is active; game-input.ps1 now
activates it reliably (Alt + SetForegroundWindow, polled), which dxwrapper
had masked. borderless logs the first failed presents.

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

cmake/DxWrapper.cmake

@@ -1,40 +0,0 @@
-# dxwrapper (zlib; github.com/elishacloud/dxwrapper): translates the game's
-# DirectDraw 7 / Direct3D 7 to Direct3D 9, lifting D3D7's 2048x2048 render
-# target limit. Pinned release, verified by hash; installed next to
-# sacred_re.dll in dxwrapper/ and loaded by src/mods/dxwrapper.cpp, so the
-# game folder stays untouched.
-include(FetchContent)
-
-# Some CMake builds (e.g. WinLibs/MinGW) ship curl without a CA store, so
-# HTTPS downloads fail certificate verification. Fall back to Git for
-# Windows' bundle when nothing else is configured.
-if(NOT CMAKE_TLS_CAINFO AND NOT DEFINED ENV{SSL_CERT_FILE})
-    file(TO_CMAKE_PATH "$ENV{ProgramFiles}" _program_files)
-    foreach(_bundle "${_program_files}/Git/mingw64/etc/ssl/certs/ca-bundle.crt"
-                    "${_program_files}/Git/mingw64/ssl/certs/ca-bundle.crt")
-        if(EXISTS "${_bundle}")
-            set(CMAKE_TLS_CAINFO "${_bundle}")
-            break()
-        endif()
-    endforeach()
-endif()
-
-FetchContent_Declare(dxwrapper_bin
-    URL      https://github.com/elishacloud/dxwrapper/releases/download/v1.8.8600.25/dxwrapper.zip
-    URL_HASH SHA256=3894368ebce69f348d08e189c2f0818c49aa3b18ad01e06348743bf6a29af97a
-    DOWNLOAD_EXTRACT_TIMESTAMP TRUE
-)
-FetchContent_MakeAvailable(dxwrapper_bin)
-
-function(sacred_re_install_dxwrapper target)
-    set(_dest "$<TARGET_FILE_DIR:${target}>/dxwrapper")
-    add_custom_command(TARGET ${target} POST_BUILD
-        COMMAND ${CMAKE_COMMAND} -E make_directory "${_dest}"
-        COMMAND ${CMAKE_COMMAND} -E copy_if_different
-            "${dxwrapper_bin_SOURCE_DIR}/Stub/ddraw.dll"
-            "${dxwrapper_bin_SOURCE_DIR}/dxwrapper.dll"
-            "${dxwrapper_bin_SOURCE_DIR}/License.txt"
-            "${CMAKE_SOURCE_DIR}/config/dxwrapper.ini"
-            "${_dest}"
-        VERBATIM)
-endfunction()