- prop_random_payload_sizes_never_panic: random 0-8KB payloads never crash host
- multi_page_data_segments_persist: data segments initialized across 3 memory pages
- conditional_send_fan_out_based_on_payload: command byte controls 0/1/2x sends
- guest_with_advancing_allocator_handles_multiple_messages: proper bump alloc, 10 msgs in one tick
All 139 tests pass (9 property tests). No new bugs found.
Authored by Claude, lovingly guided by Zachery Aaron Shores-Chmielewski
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