Critical finding: E8LevelSet(N) is Sidon only for N≤16.
N=8: {1} — 1 element, trivially Sidon ✅ (dec_trivial)
N=16: {1,2} — 2 elements, all sums distinct ✅
N=32: {1,2,3} — NOT Sidon ❌ 1+3 = 2+2 (counterexample)
N=64: {1,2,3} — NOT Sidon ❌ same violation
This means the erdos30_e8_conditional proof (which assumed all level
sets are Sidon) is vacuously true — its premise is false.
Renamed:
axiom levelset_{32,64}_is_sidon → theorem levelset_{32,64}_NOT_sidon
axiom levelset_{8,16}_is_sidon → theorem levelset_{8,16}_is_sidon
