v0.3.3 — test-harness fix

Fixed

• tests/test_r11_r12_reliability.cpp — direct include of layers/execution/VCKExecution.h. That header forward-uses VulkanDevice / VulkanCommand / VulkanSync without including their core headers, so it only compiles when the umbrella has already pulled them in. Switched the include to VCK.h to match the working tests. CI broke on all 4 jobs (Linux / macOS / Windows MinGW / Windows MSVC) on the post-merge run of v0.3.2.
• tests/test_r19_r15_r16_cost_scope.cpp — used VCK::Test::LogCapture without vck_log_capture.h. Added the include.
• tests/test_vckmath.cpp — Mat4 access mismatch. Mat4 stores float m[16] flat (column-major) with an At(row, col) accessor; the tests indexed it as m[col][row]. Switched to At(row, col).
• tests/test_vckmath.cpp — lookat_z_axis_points_to_target asserted positive view-space Z. VCK is right-handed (the third row of LookAt negates f, matching the Perspective convention which negates z into w), so a target one unit ahead at world (0, 0, -1) lands at view-space z = -1. Fixed assertion.

Notes

v0.3.3 is a test-harness fix release on top of v0.3.2 — no library code changed, no behaviour change. If your tree was on v0.3.2 with green CI on PR #8, you don't need to take this; it only matters for the maintainer's a9f3e92 "Moar tests" commit that landed post-merge.