Face center in Auto snap. Auto mode now snaps to a face center when the
cursor is over a face but not near a vertex or edge. Priority order is
vertex → edge → face center, so you no longer have to switch to Face mode (3)
manually.
Changed
Edge-aligned pivot orientation. When snapping to an edge, one axis now
runs parallel to that edge (with Z on the surface normal) instead of taking an
arbitrary twist, so the manipulator sits flush and readable on the geometry.
Stable vertex orientation. When snapping to a vertex, the pivot now uses
the vertex's own normal and a fixed reference frame for the remaining axes.
Face-aligned pivot orientation. When snapping to a face center, Z follows
the face normal and one axis runs parallel to a face edge for a clearer,
more predictable orientation.
Fixed
Pivot orientation spun unpredictably when snapping to a vertex; the frame is
now deterministic and no longer reacts to small mouse movements.
Pivot orientation ignored edge direction when snapping to inclined edges.