docs: name every approval-screen amount string, fix stale zero claim (closes #369) #393

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sneak 65d4dd8e0f docs: name every approval-screen amount string, fix stale zero claim (closes #369)
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The README's amount-display section claimed a genuine zero always renders
`0.0000`. That is corrected and scoped: it holds for the ERC-20 amount and for
the swap's `Amount` line on a literal-zero `amountIn` in a V2/V3 exact-in swap
or a zero `WRAP_ETH`. Only two zeros are stated in words before the floor — the
swap's `Min. received` (any zero minimum) and its V4 exact-in `Amount` (an
`amountIn` of zero, V4's open delta).

A new list names every string an amount slot can show: a formatted quantity,
`Unlimited`, `All available (V4 open delta)`, `None (no minimum guaranteed)`,
base units with decimals unknown, and `Unknown (not named in the calldata)`. It
also records that a zero `minBalance` on a `BALANCE_CHECK_ERC20` step now reads
the no-minimum wording where it once read `0.0000`. Each claim checked against
the tree. Docs only.

Model: opus-4-8
2026-09-21 23:30:10 +00:00