Fix render camera orientation so world up is up in frame
setViewDirection leaves camera roll unconstrained, so the aerials came out with a tilted horizon. The camera orientation is now built explicitly with world +Z projected as the frame up-vector. Two FreeCAD quirks had to be worked around. setCameraOrientation() goes through an animated setter (UseAnimation defaults on), so saveImage fired mid-transition and the roll drifted; setting the Coin camera node directly avoids the animation entirely. The first call after a standard view also needs a second application to take, so each render now verifies up.z equals cos(elevation) before saving and retries if not. Also tightened framing 20%, since fitAll was zooming out to include the road strip that runs well past the parcel.
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