Add swaps section in Verifier Contract #16
Description
@frol had some great feedback to share on the Verifier Contract docs:
Problem
The Verifier Contract tab has a clear guide for Deposits & Withdrawals with step-by-step instructions, but there's no equivalent guide for performing swaps. The token_diff intent is documented in Intent Types and Execution, but only as a reference — it doesn't walk users through the end-to-end flow of executing a swap directly against the contract.
Users who want to build on the Verifier contract without the 1Click Swap API have no practical guide for the most common operation: swapping tokens.
Proposed solution
Add a new Swaps page (or group) to the Verifier Contract tab, following the same pattern as the Deposits & Withdrawals section. It should cover the full lifecycle of a swap using the Verifier contract directly.