Build native Windows packages for both RDNA4 targets

Add explicit gfx1200/gfx1201 builds, runtime selection and per-target
code objects. Guard staging, packaging and installation against mixed
architectures; retain gfx1201 compatibility and strict K/M arithmetic.

Adapt realdody's target configuration and MSVC binary16/BOOL portability
fixes from ae530b0. Do not import its forced gfx12 layout on RDNA3.
Add exhaustive binary16 and C++/PowerShell target contract regressions.

Validation: 20 CTest gates on RX 9070 XT; four software-only gfx1200 gates;
MSVC portability compile checks; exact 4K K async and M control outputs;
isolated package install/restore and mixed-target rejection tests.
No physical gfx1200 validation is claimed.

Co-authored-by: realdody <[email protected]>

tools/windows/gfx12_wmma_probe.cpp

@@ -30,7 +30,7 @@ int main(int argc, char** argv)
         if (args.module.empty()) throw std::runtime_error("--module is required");
         HipApi hip(args.hip_root);
         hipDeviceProp_t properties{};
-        hip.select_gfx1201(args.device, properties);
+        hip.select_architecture(args.device, properties);
         hipModule_t module = nullptr;
         hip.check(hip.hipModuleLoad(&module, args.module.c_str()), "hipModuleLoad(WMMA)");
         struct ModuleCleanup {
@@ -120,7 +120,7 @@ int main(int argc, char** argv)
             }
             }
         }
-        std::printf("PASS GFX12_WMMA architecture=gfx1201 modes=raw,legacy_adapter,upstream_layout iterations=%u max_abs=%.9g max_rel=%.9g\n",
+        std::printf("PASS GFX12_WMMA architecture=%s modes=raw,legacy_adapter,upstream_layout iterations=%u max_abs=%.9g max_rel=%.9g\n", d4r::diag::HipApi::target_arch(),
             args.iterations, max_absolute_error, max_relative_error);
         return 0;
     } catch (const std::exception& error) {