Final milestone wrap-up: IcRamp v2 with a simplified vault, ICP-driven state instead of on-chain commit/uncommit, and ic-alloy-powered EVM reads for getDeposit.

We finish the pay-with-crypto flow: from Locked orders to on-chain payments, matching provider assets, and verifying EVM/Solana txs on the backend.

Frontend wiring for the experimental 'pay with crypto' path: crypto providers in the user profile, filtered provider selection in Create Order, and a compact order card UX for onrampers choosing how to pay.