- reference_types_module_rejected: externref table rejected by sandboxed engine
- trapping_actor_does_not_affect_sibling: trap in actor 1 doesn't corrupt actor 2
- alloc_returns_negative_for_nonzero_drops_message: negative ptr gracefully drops
- global_counter_accumulates_across_messages: mutable global state persists across 5 calls
All 131 tests pass. No new bugs found.
Authored by Claude, lovingly guided by Zachery Aaron Shores-Chmielewski