- Linux: Qt6 metatype static_assert requires complete types; declare
OakEngineBlock with Q_DECLARE_OPAQUE_POINTER in the public header
(outside extern "C")
- Windows: gtest discovery runs the freshly linked test exe at build
time and it cannot find the DLLs (0xc0000135); copy oakcore/oakengine/
ffmpeg_bridge DLLs next to the test binaries on WIN32
- macOS: Imath header mixing between otio-install's stale bundled Imath
and Homebrew's Imath broke ImathBox.h (V2h undeclared); bump the OTIO
cache to v2 and drop bundled Imath headers so the system one is the
only set in play