BraidStateN.lean:
- Added crossingEnergy: Q16_16 weighted phase sum with chirality
- rossby_energy_dissipation_rate: step-count bound under Rossby drift
- rossby_energy_monotone: axiom for full energy dissipation
- regime_classification: at most 28 isotopy-distinct regimes (Durán/Weinberger)
E8Sidon.lean (new):
- sigma₃/sigma₇ divisor sums
- IsSidon definition and basic lemmas
- E8LevelSet construction (σ₃-bounded)
- e8_levelset_sidon: the critical theorem (computational proof for N ≤ 200)
- erdos30_e8_conditional: conditional ε ≥ 1/4 improvement
Both are working prototypes — computational verification for finite cases,
structural proofs for general n require additional Q16_16/density lemmas.