ETH gas just collapsed 90%. Sub-dollar transactions on Ethereum mainnet — right now. Not L2. Mainnet. The Dencun upgrade dropped and EIP-4844 proto-danksharding just rewired how Ethereum handles data. Blob transactions are live and fee pressure is gone. Here's the alpha: DeFi protocols that lost users to Solana just got their edge back overnight. Uniswap v3 volume jumped 34% in 48 hours. NFT minti…