Jon/fix/btcx max

[Jon-edge]

Issue: MAX bridgeless (ZANO→BTC) failed because getMaxSwappable only resolved MAX for spendInfo-based flows. Bridgeless on Zano returns makeTx (no spendInfo), so the helper returned the original request, leaving quoteFor: 'max' and nativeAmount: '0'. The plugin then hit the min-amount check and threw SwapBelowLimit.

Solution: Updated getMaxSwappable to handle makeTx flows. For quoteFor: 'max', it now:

1. Probes with a full-balance quoteFor: 'from' request.
2. If no spendInfo (makeTx path), uses the wallet balance (minus any preTx parent fees when applicable) as the resolved MAX amount and returns a concrete from-quote request.

CHANGELOG

Does this branch warrant an entry to the CHANGELOG?

• Yes
• No

Dependencies

none

Description

none

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Note

Normalizes Bridgeless txid/order URI handling (auto 0x-prefix) and updates getMaxSwappable to work with makeTx paths without spendInfo.

• Bridgeless (DEX):
  • Build orderId without forced 0x and, on approve, normalize txid to 0x-prefixed for orderId and orderUri.
  • Submit normalized txHash to autobot (PUT /api/bridgeless).
• Swap helpers:
  • Update getMaxSwappable to handle quotes without spendInfo (makeTx paths), using full balance minus any preTx fees; retain getMaxSpendable path when spendInfo exists.
• Changelog:
  • Add entries for the above fixes.

^{Written by Cursor Bugbot for commit d6519d3. This will update automatically on new commits. Configure here.}

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