Thread: suggest cylinder size and expose metric diameter and pitch (#1759)

Thanks @cfaulkingham.

ROADMAP.md

@@ -80,6 +80,11 @@ completed drawings publish atomically. The browser still exports synchronously.
 
 ## Interactive modelling
 
+- Thread resolves a suggested metric size when a cylindrical face is picked. Diameter and
+  pitch selectors expose the existing metric designation parameter; custom designations stay
+  editable, and Automatic size returns to the face's suggestion. Cosmetic/modelled and
+  full/partial-length options remain available. This does not add tolerance classes or
+  left-hand threads.
 - New Body extrusion and face-offset previews show completed intermediate geometry while a
   drag continues, then catch up to the exact final value. Changes to the selected geometry,
   operation or feature still discard obsolete results. Distance arrows and their value boxes