fix(sui): use live JSON-RPC nodes and surface recover errors

Sui Foundation disabled JSON-RPC on fullnode.*.sui.io, so every SDK consumer hit "Method not found" and Sui.recover() reported "no funds" because the RPC error was swallowed. Point sdk-core defaults at PublicNode for mainnet and testnet, and rethrow getBalance failures with address, index, and RPC URL so the real cause surfaces.

Ticket: WCI-1455
Co-authored-by: Cursor <cursoragent@cursor.com>

Author: vibhavgo

modules/sdk-coin-sui/src/sui.ts

@@ -368,7 +368,11 @@ export class Sui extends BaseCoin {
         availableBalance = new BigNumber(balanceInfo.totalBalance);
         fundsInAddressBalance = new BigNumber(balanceInfo.fundsInAddressBalance);
       } catch (e) {
-        continue;
+        throw new Error(
+          `Failed to query Sui balance for address ${senderAddress} at index ${idx} via ${this.getPublicNodeUrl()}: ${
+            (e as Error).message
+          }`
+        );
       }
       if (availableBalance.minus(MAX_GAS_BUDGET).toNumber() <= 0) {
         continue;

modules/sdk-coin-sui/test/unit/sui.ts

@@ -3018,6 +3018,25 @@ describe('SUI:', function () {
 
       sandBox.assert.callCount(basecoin.getBalance, 10);
     });
+
+    it('should surface RPC errors from getBalance instead of reporting no funds', async function () {
+      const callBack = sandBox.stub(Sui.prototype, 'getBalance' as keyof Sui);
+      callBack.rejects(new Error('Method not found'));
+
+      await basecoin
+        .recover({
+          userKey: keys.userKey,
+          backupKey: keys.backupKey,
+          bitgoKey: keys.bitgoKey,
+          recoveryDestination,
+          walletPassphrase,
+          startingScanIndex: '0',
+          scan: 1,
+        })
+        .should.be.rejectedWith(/Failed to query Sui balance.*Method not found/);
+
+      sandBox.assert.callCount(basecoin.getBalance, 1);
+    });
   });
 
   describe('Consolidation Transaction Failures:', () => {

modules/sdk-core/src/bitgo/environments.ts

@@ -210,7 +210,7 @@ const mainnetBase: EnvironmentTemplate = {
   },
   hmacVerificationEnforced: true,
   tonNodeUrl: 'https://toncenter.com/api/v2/jsonRPC',
-  suiNodeUrl: 'https://fullnode.mainnet.sui.io',
+  suiNodeUrl: 'https://sui-rpc.publicnode.com',
   iotaNodeUrl: 'https://api.mainnet.iota.cafe',
   etcNodeUrl: 'https://etc.blockscout.com',
   coredaoExplorerBaseUrl: 'https://openapi.coredao.org',
@@ -449,7 +449,7 @@ const testnetBase: EnvironmentTemplate = {
   },
   hmacVerificationEnforced: false,
   tonNodeUrl: 'https://testnet.toncenter.com/api/v2/jsonRPC',
-  suiNodeUrl: 'https://fullnode.testnet.sui.io',
+  suiNodeUrl: 'https://sui-testnet-rpc.publicnode.com',
   iotaNodeUrl: 'https://api.testnet.iota.cafe',
   etcNodeUrl: 'https://etc-mordor.blockscout.com',
   coredaoExplorerBaseUrl: 'https://api.test2.btcs.network',