trade reference tokens 1-1 for IST and back

[dckc]

What is the Problem Being Solved?

Traders want to bring reference tokens to Agoric, trade for IST, and move IST elsewhere for use in cosmos DeFi.
Traders also want to redeem IST for reference tokens.

Description of the Design

web UI (#6023 )

Using a CLI (#5119 ) for automation / testing:

• given a cosmos-level account (i.e. an address with some tokens), provision a smart wallet
• show wallet balances
• choose amount, direction, and fees to format a swap offer:
  • look up contract boardId, fees
• execute the transaction
• track status of transaction until it is complete or otherwise

IBC transfers moved to #6143

Security Considerations

Test Plan

Several of us try it out.

Web test

1. provision a smart wallet on Ollinet
   • we use a faucet for testing; UI for getting a smart wallet #6211 is the plan to get beyond that.
2. open Wallet and PSM pages
3. choose an amount and a direction (and fees) and execute the transaction
4. track status of transaction until it is complete or otherwise
5. balances update

[dckc]

based on discussion with @rowgraus , I noted some specifics in the description:

• axlUSDC on Osmosis
• Native USDC on Ethereum over Axelar or Gravity Bridge
• gravUSDC on Crescent

[dckc]

worked for me!

I did have to futz with local.agoric.com to point it to https://wallet.agoric.app (#6027)
and turn off brave shields