- Update default_test.json with targeted test variants and documented
tolerance presets.
- Refactor test suite to cover distinct code paths while maintaining
multi-backend compatibility (OpenGL/Vulkan).
- Integrate TestProgressBar and UI summary text for better test progress
visualization.
- Enhance validation managers with dynamic naming, zip extraction/export,
and bundle creation.
- Update validation_app.py terminal UI to support multiple devices,
device switching, and local result serving.
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