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>

src/mods/widescreen.cpp

@@ -1,5 +1,5 @@
-// Widescreen: render the world 1:1 at the monitor's resolution, showing more
-// of it, instead of scaling a 1024x768 image.
+// Widescreen: show more of the world horizontally on wide monitors while
+// everything keeps its original on-screen size.
 //
 // The world view sizes itself from zoom * 1024.0 / 768.0 (float constants that
 // the UI also reads) and projects 3D models with an ortho camera of
@@ -15,8 +15,8 @@
 //               ; 0 = monitor height, i.e. native 1:1 (everything smaller)
 //   Width=0     ; 0 = Height * monitor aspect ratio
 //
-// Windows' Direct3D 7 limits the render size to 2048x2048 unless the dxwrapper
-// mod (Direct3D 9) is active; the borderless mod centres a smaller image 1:1.
+// Windows' Direct3D 7 cannot render to targets larger than 2048x2048, so the
+// render size is clamped to that (only reachable with Height=0 / large Width).
 //
 // Experimental: the UI is still drawn at the top-left 1024x768, and creatures
 // are only active within the original distance.
@@ -32,7 +32,6 @@
 
 #include "game/addresses.h"
 #include "game/ui/ui_manager.h"
-#include "mods/dxwrapper.h"
 #include "re/config.h"
 #include "re/hook.h"
 #include "re/log.h"
@@ -246,7 +245,7 @@ void ApplyRenderSize(game::DxDisplayMode& mode, HWND window) {
     // wider or taller than 2048 pixels (CreateDevice fails with
     // DDERR_INVALIDOBJECT); anything larger needs a different renderer.
     constexpr int kMaxD3D7Surface = 2048;
-    if (!mods::dxwrapper::IsActive() && (width > kMaxD3D7Surface || height > kMaxD3D7Surface)) {
+    if (width > kMaxD3D7Surface || height > kMaxD3D7Surface) {
         re::Log("widescreen: %dx%d exceeds the Direct3D 7 limit, clamping to %d", width, height, kMaxD3D7Surface);
         width = std::min(width, kMaxD3D7Surface);
         height = std::min(height, kMaxD3D7Surface);