Coverage had lagged the recent feature work. Add both layers:
- test_viewport_camera (Catch2, headless): constructs ViewportCore with a mock
ViewportHost — construction/teardown touch no GPU (the wgpu teardown lives in
releaseWgpuModelGpuData, only reached with models loaded), and the camera ops
are pure — so it unit-tests the SHARED fly math fast and deterministically:
flyMove (forward step, 5x boost, opposing-key cancel, dt clamp, QE along +Z,
degenerate-pitch stays finite), flyLook (turn-in-place pins the eye, pitch
clamp), flyAdjustSpeed (x1.25/notch, [0.05,1000] clamp), toggleXray, and
hideSelected/showAll. Links the built IfcViewerCore (ViewportCore.cpp is the
monster TU that can't compile standalone). +9 cases → 122 desktop.
- smoke.spec.mjs (Playwright): fly (enter → W moves the camera → Esc exits),
x-ray (toggle translucency on/off), and hide-after-pick, driving the exported
C hooks end-to-end. +3 cases → 9 web.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>