Fillets and chamfers on runs of neighbouring edges along a planar face's loop (two or three top edges of a box): the blends meet in mitres at the sharp corners between them and end square where unblended edges go on (those edges and the walls' seams stop at the blend)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL

ROADMAP.md

@@ -58,7 +58,8 @@ headline counts in-scope tabs only and lists the deferred ones separately.
 - Fillets and chamfers: straight edges (convex or concave) between planar faces with perpendicular
   planar end faces; whole smooth loops of a planar face, picked whole or by one edge (tangent
   chain), including circles and walls at any angle (boss bases and tops, bores, pocket floors,
-  plate outlines), loops with sharp corners between straight edges (the blends meet in mitres),
+  plate outlines), loops with sharp corners between straight edges (the blends meet in mitres), runs of
+  neighbouring edges along a planar face's loop (two top edges of a box: mitred, ending square),
   rounded corners rounded again (sphere octants, tori at concave corners); every edge of a
   convex planar body or of an extruded part; fillets inside patterns; closed chains of curved
   edges between any two smooth sides (a branch pipe on a main pipe), by a rolling ball (the