Inconsistent behavior when displaying objects with show_object()

[lukman06]

Description

There appears to be inconsistent behavior when displaying a Sketch object directly with show_object(). The function seems to automatically assemble the Sketch before displaying it.

Code to reproduce

import cadquery as cq
line = cq.Sketch().segment((0,0),(0.25,1)).segment((1,2))
line_assemble = line.assemble()
show_object(line)  # This shows the assembled version despite 'line' not being assembled

Expected behavior

I would expect show_object(line) to either show the unassembled Sketch object or require explicit assembly before displaying.

Actual behavior

When calling show_object(line), it displays the Sketch as if line_assemble = line.assemble() had been called first. This automatic conversion happens behind the scenes.

Environment

• CQ-Editor version: 0.5.dev0