Correcting plastic drawer bottom dimensions to actual measurements

The drawer length was hardcoded as 8*42=336mm but the actual interior
is 345mm. Now using min_size_mm for both axes so the baseplate pads
out to fill the real drawer dimensions (345x240mm) while still fitting
8 grid units lengthwise.

Co-Authored-By: Claude Opus 4.6 (1M context) <[e-mail]>

plastic-drawer-bottom.scad

···
 $fs = 0.25;
 
 drawer_width = 240;
-drawer_length = 8 * 42;
+drawer_length = 345;
 
 hole_options = bundle_hole_options(
     magnet_hole = true,
···
 gridfinityBaseplate(
     grid_size_bases = [8, 0],
     length = l_grid,
-    min_size_mm = [0, drawer_width],
+    min_size_mm = [drawer_length, drawer_width],
     sp = 0,
     hole_options = hole_options,
     sh = 0,