feat: add d4r inference engines and Windows parity tooling

Add native K/M/RR inference engines, HIP kernels, replay and validation
harnesses, and Windows DLSS setup and runtime support. Include GPU
profiling tools, build and packaging scripts, platform integration
patches, and implementation documentation.

tools/d4r_motion_dilation.h

@@ -0,0 +1,37 @@
+#pragma once
+#include <stdint.h>
+
+/* Shared Wine/HIP ABI. Pitches are bytes; motion pixels are packed RG16F. */
+typedef struct D4rMotionDilationParams
+{
+    uint64_t depth, motion, output;
+    uint64_t depth_pitch, motion_pitch;
+    uint32_t render_width, render_height, motion_width, motion_height;
+    float jitter_x, jitter_y;
+    uint32_t radius, reversed_depth;
+} D4rMotionDilationParams;
+
+/* Low-resolution velocity and depth share the render raster grid. Allocation
+   padding is not part of that grid; retain the original NGX flags and MV scale.
+   Display-resolution velocity still needs the jittered depth-grid mapping. */
+static inline int d4r_motion_dilation_geometry(D4rMotionDilationParams* p, uint32_t flags,
+    uint32_t output_width, uint32_t output_height)
+{
+    if ((flags & 4u) != 0 || p->render_width == 0 || p->render_height == 0)
+        return 0; /* Jittered motion values remain unsupported. */
+    if ((flags & 2u) != 0)
+    {
+        if (p->motion_width < p->render_width || p->motion_height < p->render_height)
+            return 0;
+        p->motion_width = p->render_width;
+        p->motion_height = p->render_height;
+        p->jitter_x = p->jitter_y = 0;
+        return 1;
+    }
+    return p->motion_width == output_width && p->motion_height == output_height;
+}
+#ifdef __cplusplus
+static_assert(sizeof(D4rMotionDilationParams) == 72, "motion dilation ABI");
+#else
+_Static_assert(sizeof(D4rMotionDilationParams) == 72, "motion dilation ABI");
+#endif