Move points and connectivity reading inside the isFirst guard to avoid redundant parsing on subsequent timesteps. Move displacements reading outside the guard so they are read for every timestep, and update the log message accordingly.
VTK coordinates are negated (z positive downward) to match ResInsight
internal convention, which flips the IJK directions relative to what the
structured grid algorithm expects. Add invertIJK flag to RigFemPartGrid
and RigFemPart so the inversion is applied during struct grid construction.
Replaced all references to RiaStatisticsTools with RigStatisticsTools across the codebase, including header includes, static method calls, and test files. Updated CMake configuration to remove RiaStatisticsTools and add RigStatisticsTools. Renamed and updated related unit tests. No changes to logic or algorithms; this is a namespace and organizational refactor for consistency. Also added ApplicationLibCode include directories as PRIVATE to relevant targets.