Flanders Splits Staking from Consensus, Caps Delegation at 1/3

Flanders Protocol overhaul: native delegation splits commercial staking from consensus weight allocation. Linear allocation, D_i = uB_i, eliminates identity-splitting gains. λ≤1 caps delegated stake. Security invariant 3(κ+rm)≤1+d bounds coalition share at 1/3. Emergency deleveraging scales delegated balances via α.