fix(win): update wgpu-native to v27, unify Windows/macOS API paths

- fetch_win_deps.sh: update wgpu-native v0.19.4.1 → v27.0.4.0 (same as macOS)
- platform.h: remove v0.19 compat shims, Windows now uses WGPUStringView API
- gpu.cc/gpu.h: remove DEMO_CROSS_COMPILE_WIN32 old-API branches
- texture_readback.cc, visual_debug.cc, hybrid3d_effect.cc: same cleanup
- rotating_cube_effect.cc: remove #ifdef guard for depthSlice
- glfw3webgpu.c: remove old WGPUSurfaceDescriptorFromWindowsHWND branch
- asset_manager.cc: fix DEMO_STRIP_ALL→STRIP_ALL guard (vs_main was missing
  in STRIP_ALL Windows builds because disk-loading path ran on embedded data)
- tracker.cc: skip MP3 assets gracefully in STRIP_ALL builds instead of fatal

handoff(Gemini): Windows .exe now runs under Wine. demo64k.exe renders frames
and progresses through audio timeline. Pre-existing test failures unchanged.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 16 insertions, 19 deletions

diff --git a/src/platform/platform.h b/src/platform/platform.h
index 03aa2b3..4b31ac3 100644
--- a/src/platform/platform.h
+++ b/src/platform/platform.h
@@ -14,32 +14,29 @@
 #include <webgpu/webgpu.h>
 #include <webgpu/wgpu.h>
 
-#define WGPUOptionalBool_True true
-#define WGPUOptionalBool_False false
-#define WGPUSType_ShaderSourceWGSL WGPUSType_ShaderModuleWGSLDescriptor
-#define WGPU_DEPTH_SLICE_UNDEFINED 0xffffffff
-#define WGPUSurfaceGetCurrentTextureStatus_SuccessOptimal                      \
-  WGPUSurfaceGetCurrentTextureStatus_Success
-#define WGPUSurfaceGetCurrentTextureStatus_SuccessSuboptimal                   \
-  WGPUSurfaceGetCurrentTextureStatus_Success
-#define WGPUCallbackMode_WaitAnyOnly 0
-
-typedef WGPUShaderModuleWGSLDescriptor WGPUShaderSourceWGSL;
-
-static inline const char* str_view(const char* str) {
-  return str;
+static inline WGPUStringView str_view(const char* str) {
+  if (!str)
+    return {nullptr, 0};
+  return {str, strlen(str)};
 }
-static inline const char* label_view(const char* str) {
-  return str;
+
+static inline WGPUStringView label_view(const char* str) {
+#if !defined(STRIP_ALL)
+  if (!str)
+    return {nullptr, 0};
+  return {str, strlen(str)};
+#else
+  (void)str;
+  return {nullptr, 0};
+#endif
 }
 
 static inline void platform_wgpu_wait_any(WGPUInstance instance) {
-  wgpuInstanceProcessEvents(instance);
+  wgpuInstanceWaitAny(instance, 0, nullptr, 0);
 }
 static inline void
 platform_wgpu_set_error_callback(WGPUDevice device,
-                                 WGPUErrorCallback callback) {
-  wgpuDeviceSetUncapturedErrorCallback(device, callback, nullptr);
+                                 WGPUUncapturedErrorCallback callback) {
 }
 
 #else