release preparations

[johguenther]

• Bump version to v2.0.3, rebuild README
• Windows release with VC 2022, remove toolset
• Update dependency Embree
• Test size of VKLUnstructuredCellType, fix for MSVC

[Copilot]

Pull request overview

Prepares the v2.0.3 release by updating project/release metadata, refreshing the Embree dependency used by the superbuild, and addressing a Windows/MSVC enum-size issue (with a regression test) alongside Windows CI/release tooling updates.

Changes:

• Bump version references to 2.0.3 across CMake, README, changelog, and release workflow.
• Update superbuild Embree dependency to v4.4.1 (URLs/hashes).
• Adjust several public enums to use explicit underlying types in C++ builds and add a unit test validating VKLUnstructuredCellType size; update Windows build/release workflows to drop explicit toolset selection and move release builds to VS2022.

Reviewed changes

Copilot reviewed 22 out of 22 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
testing/apps/tests/enum.cpp	Adds a Catch2 test to validate VKLUnstructuredCellType size.
testing/apps/CMakeLists.txt	Registers the new enum test in the test executable.
superbuild/CMakeLists.txt	Bumps Embree to v4.4.1 and updates download hashes.
README.md	Updates release version text and adds v2.0.3 notes.
openvkl/include/openvkl/volume.h	Forces underlying type for selected enums in C++ builds (incl. VKLUnstructuredCellType).
openvkl/include/openvkl/VKLTemporalFormat.h	Adjusts enum underlying-type selection for C++ builds.
openvkl/include/openvkl/VKLLogLevel.h	Adjusts enum underlying-type selection for C++ builds.
openvkl/include/openvkl/VKLFormat.h	Adjusts enum underlying-type selection for C++ builds.
openvkl/include/openvkl/VKLFilter.h	Adjusts enum underlying-type selection for C++ builds.
openvkl/include/openvkl/VKLError.h	Adjusts enum underlying-type selection for C++ builds.
openvkl/include/openvkl/VKLDataType.h	Adjusts enum underlying-type selection for C++ builds.
openvkl/include/openvkl/data.h	Adjusts enum underlying-type selection for C++ builds.
doc/overview.md	Updates platform/support wording (removes “beta” mention).
CMakeLists.txt	Bumps project version to 2.0.3.
CHANGELOG.md	Adds v2.0.3 entries for enum-size fix and Embree update.
.github/workflows/internal.release.yml	Bumps release package version; updates Windows release generator usage (drops toolset, VS2022).
.github/workflows/internal.nightly.windows.yml	Updates Windows nightly build invocation to drop explicit toolset argument.
.github/workflows/internal.ci.windows.yml	Updates Windows CI build invocations to drop explicit toolset argument.
.github/scripts/release/windows.ps1	Removes passing an explicit CMake toolset (-T).
.github/scripts/build.bat	Removes passing an explicit CMake toolset (-T) and shifts argument usage.
.github/deps/gfx-windows-public.env	Unpins Windows GPU driver version to windows-latest.
.github/deps/dpcpp-sycl-nightly.env	Changes SYCL nightly compiler version reference.

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[Copilot]

Pull request overview

Copilot reviewed 23 out of 23 changed files in this pull request and generated no new comments.

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