Address second cursor bot review pass

- revolut: percent-encode the pagination cursor so an opaque next_cursor
  containing + or / does not break paging after the first page (Medium).
- nexchange: treat a zero contract address (0x000...0) as the chain's native
  asset instead of minting a tokenId for the gas asset, which would mis-route
  its rates and volume (Medium, matches Banxa/Moonpay).

Author: j0ntz

src/partners/nexchange.ts

@@ -267,8 +267,16 @@ export function resolveNexchangeAsset(
   const evmChainId = EVM_CHAIN_IDS[chainPluginId]
   const contractAddress = meta.contract_address
 
-  // No contract_address means a native chain asset.
-  if (contractAddress == null || contractAddress === '') {
+  // A missing/empty contract_address, or a zero address (0x000…0), denotes the
+  // chain's native/gas asset, not a token. The zero-address case matters
+  // because createTokenId would otherwise mint a non-null tokenId for the gas
+  // asset and mis-route its rates/volume (Banxa and Moonpay special-case this
+  // the same way).
+  if (
+    contractAddress == null ||
+    contractAddress === '' ||
+    /^0x0+$/i.test(contractAddress)
+  ) {
     return {
       currencyCode: normalizedCode,
       chainPluginId,

src/partners/revolut.ts

@@ -95,7 +95,10 @@ export async function queryRevolut(
         const to = new Date(endTime).toISOString()
 
         let url = `https://api.revolut.com/partner/v1/transactions?from=${from}&to=${to}&limit=${QUERY_LIMIT}`
-        if (cursor != null) url += `&cursor=${cursor}`
+        // Opaque cursors can contain + or /, which must be percent-encoded or
+        // pagination breaks after the first page (an unencoded + becomes a
+        // space), silently dropping later orders in the window.
+        if (cursor != null) url += `&cursor=${encodeURIComponent(cursor)}`
 
         log(`Querying Revolut from:${from} to:${to}`)