ok    Cartesian rectangular areas, shared-face counts and exact length/distance weights
  ok    independent area, vector-normal closure and face orthogonality
  ok    irregular Voronoi interior affine Laplacian zero and radial quadratic Laplacian four
  ok    inherited capillary/disjoining pressure equals directional energy derivative on polygon measures
  ok    pressure derivative equals inherited Hessian on the new geometric graph
  ok    actual inherited implicit drainage converges with positive liquid on irregular geometry
  ok    single shared pair flux independently reconstructs every destination volume
  ok    capillary/disjoining energy obeys minimizing-movement dissipation bound
  ok    returned flux agrees with final pressure and frozen physical mobility
  ok    uniform thickness is a zero-flow fixed point on irregular Voronoi support
  ok    independent forward implicit-donor solute integral, not old B/final V
  ok    independent reverse-flow donor solute integral and orientation
  ok    interface liquid and dissolved transfer cancel under reversed orientation
  ok    coincident generating sites rejected before graph construction
  ok    recorded coarse/fine clipping defect: machine-scale duplicates removed with area unchanged
  ok    genuinely nonconvex corner remains rejected after duplicate cleanup
  ok    actual nonmatching coarse/fine layout closes after audited duplicate cleanup

17 passed, 0 failed