fix(swap): forward caller slippage to jupiter instead of hardcoded 1%

[gomesalexandre]

what

JupiterProvider.GetQuote always sent slippageBps=100 (the 1% default) and ignored QuoteRequest.ToleranceBps entirely — a caller could neither tighten (e.g. 0.3% for a deep pool) nor loosen (e.g. 3% for a volatile one) the swap's slippage. Not a fund-loss (1% is a sane floor), but the requested tolerance was silently dropped.

how

Jupiter bakes the resulting min-out into the quote's otherAmountThreshold, which is cached in ProviderData and reused by BuildTx — so forwarding a positive tolerance at the quote call is sufficient (single-site fix). Honor req.ToleranceBps (same basis-point units) when positive; fall back to the 1% default when omitted or 0 (0 would demand exact-out and revert on any price movement). Regression test asserts the outgoing slippageBps tracks the requested tolerance, defaults to 100 when omitted, and falls back on 0.

risk

Low — default behavior is unchanged; only an explicit positive tolerance now takes effect. go build ./sdk/swap/ + go vet clean; test passes under the go.mod toolchain (GOTOOLCHAIN=go1.24.2 — the package test binary doesn't link on Go >=1.24 due to a pinned bytedance/sonic/go:linkname issue, unrelated to this change).

receipts

Found by the recipes swap-providers fund-safety audit (the MayaChain-CRITICAL / Relay-min-out vein — recipes#597, #598). Sibling finding: 1inch (oneinch.go) has the same hardcoded-1% ignore-tolerance behavior but threads slippage at two sites (quote + BuildTx) and needs the tolerance carried through SwapRequest/Quote, so it's left for a follow-up. LiFi's omitted-slippage default was live-verified conservative (0.5%).

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