fix(showcase): wooden ladder visual quality pass

Turned rungs, ferrules, and a level sole on the raked stile replace the cube shoes, and hygiene budgets lock the joints so the silhouette cannot regress to sticks and boxes.

Signed-off-by: TMHSDigital <154358121+TMHSDigital@users.noreply.github.com>
Co-authored-by: Cursor <cursoragent@cursor.com>

Author: TMHSDigital