kernel tests: the rim chamfers running off their rims build, on SMLib 737c392

chamfer_wider_than_sloped_basin_rim_builds and a_rim_loop_chamfer_running_off_its_rim_builds
waited for SMLib to build the cliff overflow (CloseRemovalRegion refused it,
SM_FILERR_NO_ROOM). The pinned SMLib builds it (eddf0ede4, bba9914b6): both pass on aarch64
Linux and are no longer ignored.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/kernel/src/blend_corner.rs

@@ -599,7 +599,6 @@ mod tests {
     /// where the front strip's edge 1 + t/2 − w(t) crosses y = 0, so Simpson's rule is exact on
     /// each piece: 375.673069 taken from V0 = 140333.333333 (the prismatoid), 139957.660264.
     #[test]
-    #[ignore = "fails until SMLib builds the cliff overflow of a blended loop: CloseRemovalRegion refuses it (SM_FILERR_NO_ROOM, its fillet boundary closes on one face)"]
     fn a_rim_loop_chamfer_running_off_its_rim_builds() {
         use solidcraft_geom::{Loop2, Plane, Vec2};
         let rectangle = |x0, y0, x1, y1| Loop2::polygon(&[Vec2::new(x0, y0), Vec2::new(x1, y0), Vec2::new(x1, y1), Vec2::new(x0, y1)]);

crates/kernel/src/tests.rs

@@ -1193,7 +1193,6 @@ fn chamfer_as_wide_as_sloped_basin_rim_builds() {
 /// ([`sloped_basin_rim_chamfer_removed`], clipped to y >= 0): 73.450475 for 2 and 142.112912 for
 /// 3 on the 1 mm rim, 184.526613 for 4 on the 0.5 mm one.
 #[test]
-#[ignore = "fails until SMLib builds the cliff overflow: CloseRemovalRegion refuses it (SM_FILERR_NO_ROOM, its fillet boundary along the side edge's line lies on the surfaces of two faces)"]
 fn chamfer_wider_than_sloped_basin_rim_builds() {
     for (margin, distance) in [(1.0, 2.0), (1.0, 3.0), (0.5, 4.0)] {
         let b = sloped_basin(margin);