Update history.md with cycles 89-92 and final campaign summary.
Mark state.md as campaign complete.
Authored by Claude, lovingly guided by Zachery Aaron Shores-Chmielewski
- guest_start_function_modifies_alloc_region: host overwrites pre-filled 0xFF memory
- engine_clone_is_same_engine: cloned engine produces working actors
- handle_uses_i64_operations: i64 arithmetic with i32.wrap_i64
- two_hundred_actors_from_same_engine: 200 actors all process one message
- Updated history.md with Cycles 27-39
All 170 tests pass. No new bugs found.
Authored by Claude, lovingly guided by Zachery Aaron Shores-Chmielewski
