canSubmit now requires a chosen holding on both swap sides, so the swap e2e
test must select them first. The selector auto-selects a single holding, but
pick it explicitly (robust to multi-account wallets) via a new selectAccount
step that waits for the holdings to load and selects the first match.
Expose each side's selector via selectorObjectName (swapSell/BuyAccountSelector)
and surface sellHolding/buyHolding in the failure diagnostics.
Add a per-slot account selector to the swap card's sell/buy inputs, sourced
from the wallet's token holdings, so a user holding a token in several accounts
chooses which funds each side. A single holding auto-selects.
- SwapPage fetches backend.tokenHoldings(), refetching when the wallet opens
- TokenInput embeds ProgramAccountSelector (half width, right-aligned) in a
full-width row below the amount/token row; exposes it as selectedHoldingId
- SwapCard drives swapExactInput/Output with the selected holdings and blocks
submit ("Select token accounts") until both are chosen
- ProgramAccountSelector gains showWhenSingle + textAlignment opt-ins
r4bbit