memoryAllocate() becomes a macro capturing __FILE__/__LINE__ into a fixed-size tracking table when DUSK_TRACK_MEMORY is enabled (Linux only for now), so a leak surviving to shutdown can be traced back to its call site. Replaces engineDispose's hard assertTrue with memoryCheckUnfreed(), which reports unfreed allocations (with call sites when tracking is on, just a count otherwise) instead of aborting. Co-Authored-By: Claude Sonnet 5 <[email protected]>