[Queuse]

What

Add Windows runtime regressions for scoped libkernel_sys/libkernel_web imports: runtime fallback, provider precedence, guest-module isolation and unresolved imports. The implementation from #8867 is now in main; this PR adds only the tests and their CMake registration.

Tested

Windows 11 x86-64, WinLibs MinGW-w64 GCC 15.2.0-r7, Ninja, Release, relinker-only. Head a19a7d52bf includes main 097a9514a0.

• Rebuilt relinker, entry_stub_tests and windows_dependency_diagnostics_tests. windows_kernel_variant_sys, windows_kernel_variant_web, windows_dependency_diagnostics and entry_stub pass: 4/4 in 10.23 s, each below 30 s.
• Conventions and whitespace checks pass. Integration with consulted main a23f8fc9fb is clean; its intervening changes do not touch this regression or relinker build inputs.
• Fresh overlap analysis: feat(aot): consolidate native ARM64 compiler, runtime and consumers #5021 adds macOS fixtures and feat(relinker): trace function imports on macOS #9408 adds a macOS trace-import test; neither duplicates the kernel-variant tests. test: organize library tests and label CTest suites #6044 moves test registrations; its proposed order still awaits the author. If it lands first, preserve these tests with its final registration layout.
• Linux/macOS, full product builds, titles and console hardware were not run.

Checklist

• Based on current main; no other open PR implements the same functions
• One topic per PR; follow-ups go in a new PR
• No comments in code except technical debt
• Unimplemented paths throw (NotImplemented_nid_no_patch); silent stubs are listed under Silent stubs in their library's technical debt file
• No notes, investigation .md files or images added to the repository (attach them to this PR)
• New third-party code is a submodule built from source
• Generic behaviour, not specific to one title
• Depends on: none
• Fixes: none
• Unblocks: none
• GPUs tested: n/a
• AI-assisted: yes

[clairtonmichel]

Tested on AMD Ryzen 7 9800X3D and AMD Radeon RX 7900 XTX (Fedora Linux, Mesa 26.2.5):

• Built cleanly with zero errors.
• Ran the complete relinker and kernel variant import test suites (relinker_executables, relinker_conversion, relinker_game_patch, guest kernel modules): 100% passed successfully (15/15 green in 1.15s).
• Kernel variant imports handling behaves correctly on host. Ready to merge!

[github-actions]

Some comparisons could not be completed because a pull request conflicts with the base branch. Review these shared files manually before concluding that there is no overlap.

Pull request	Shared files not compared
PR 5021	core/relinker/CMakeLists.txt
PR 6044	core/relinker/CMakeLists.txt
PR 9408	core/relinker/CMakeLists.txt

[JJenkx]

Independent Windows run, as data only. Machine: Windows 11 Enterprise 10.0.22621, Ryzen 9 5950X, WinLibs GCC 15.2.0 UCRT r7, Release, BUILD_TESTING=ON, Python 3.15. #8654 (c318c70), #8717 (ba9e424) and #9000 (78bfaba) were merged together onto main 830ccd1, without conflicts, and each test was run 3 times. windows_kernel_variant_sys and windows_kernel_variant_web pass 3 of 3.

AI-assisted (Claude Code).

[Queuse]

Refreshed this branch onto main b7d1d47a5 and reran the Windows checks on head a52cc17ded with MSYS2 UCRT64 GCC 16.2.0, Ninja, Release, relinker-only.

All four pass: windows_kernel_variant_sys (15.77 s), windows_kernel_variant_web (16.45 s), windows_dependency_diagnostics (54.72 s) and entry_stub (0.14 s), 87.23 s total. Built the relinker and both native test targets. Conventions and whitespace checks pass. The description records these new results separately from the earlier WinLibs run.