- handle_with_loop_computes_sum: iterative byte sum via wasm loop/br, u8 overflow wrapping
- send_with_dest_ptr_zero_reads_from_memory_start: dest_ptr=0 is a valid location
- stop_actor_with_pending_messages_no_crash: stop before tick with 10 queued messages
- prop_truncated_wat_always_produces_error: any truncated WASM bytes always fail to build
All 150 tests pass (10 property tests). No new bugs found.
Authored by Claude, lovingly guided by Zachery Aaron Shores-Chmielewski
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