feat(platform): Fix high-DPI scaling and add resolution option

- Fixed a 'squished' viewport bug on high-DPI (Retina) displays by querying the framebuffer size in pixels instead of using the window size in points.
- Centralized window dimension management within the platform layer.
- Added a '--resolution WxH' command-line option to allow specifying a custom window size at startup. This option is stripped in STRIP_ALL builds.
- Updated all test and tool executables to use the new platform API.

1 files changed, 7 insertions, 3 deletions

diff --git a/src/platform.h b/src/platform.h
index 9cfaf00..38a0568 100644
--- a/src/platform.h
+++ b/src/platform.h
@@ -6,16 +6,20 @@
 
 #include <webgpu.h>
 
+// Forward declare GLFWwindow to avoid including the full header here.
 struct GLFWwindow;
 
-void platform_init_window(bool fullscreen);
+void platform_init_window(bool fullscreen, int* width_ptr, int* height_ptr);
 void platform_shutdown();
 void platform_poll();
 bool platform_should_close();
 
-void platform_toggle_fullscreen();
-
 GLFWwindow* platform_get_window();
 double platform_get_time();
 
+// Add dimension getters
+int platform_get_width();
+int platform_get_height();
+float platform_get_aspect_ratio();
+
 WGPUSurface platform_create_wgpu_surface(WGPUInstance instance);