Smart wallet can trade with small # of users

[turadg]

Epic/milestone for smart wallets.

Acceptance criteria

• If you walk up to a new browser with your 24 words you can make a transaction
  • actually, that requires Account provisioning: charge BLD for smart wallet #4654 , which is beyond the scope here
• (stretch goal): If two browser tabs open it continues to work

plan

• (stretch) Wallet can sign an offer without requiring a roundtrip to the chain #3908
• wire RPC publishing nodes into bootstrap/run-protocol code #5386
  • PR Expose key AMM economic data via subscription #4648
  • PR Publish amm pool list subscription to chain storage #5400
• delegate from interactive signer to background signer for low-privilege actions #4406
• Smart wallets can get balances with zero transactions (for small # of users) #5356
  • Expose chain-side balances for non-transactional reading #3756
    • merkle-subtree-writing objects #4558
  • Support publishing to chainStorage-backed subscriptions #5353
  • Implement makePublisherKit for sealed publishers #4331
  • (dup?) Expose chain-side balances for non-transactional reading #3756

[dckc]

I was thinking the main point here is that the only cosmos level transaction we have to sign to make an AMM trade is to accept the offer.

@samsiegart pointed out that this might not be feasible; we might need another one to get an invitation. #3908 is about getting an offer from a dapp to the wallet without going thru the chain.

In any case, the "two browser tabs" angle is only tangentially relevant.

[dckc]

@samsiegart where are we now? Would you please add

• a quick-n-dirty screen recording of whatever works
  • p.s. a swap works! We got a 1.5min recording
• a few text bullet points about what works, and the first thing that does not
• a sketch of how I could reproduce those results
  • p.s. https://gist.github.com/samsiegart/9a81face0a8683fdb2ebb72c600a6563

[dckc]

yay! we landed all the pieces. Let's use #5073 to track end-to-end testing.