After the main fill, detect if the last column/row is an "oddball" with fewer parts than the main grid. If so, remove those parts and re-fill the remainder strip independently using all strategies (linear, rect best-fit, pairs). Improves 30→32 parts on the test case (96x48 plate with 30x7.5 interlocking parts). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>