fix(flrp): map stake intent type to add permissionless tx

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

@@ -92,8 +92,11 @@ export class Flrp extends BaseCoin {
     const explainedTx = tx.explainTransaction();
 
     const type = params.txParams.type;
+    // 'stake' is the intent-type alias for AddPermissionlessDelegator; normalize it
+    // so the TransactionType enum lookup succeeds.
+    const normalizedType = type === 'stake' ? 'AddPermissionlessDelegator' : type;
 
-    if (!type || (type !== 'ImportToC' && explainedTx.type !== TransactionType[type])) {
+    if (!normalizedType || (normalizedType !== 'ImportToC' && explainedTx.type !== TransactionType[normalizedType])) {
       throw new Error('Tx type does not match with expected txParams type');
     }
 

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

@@ -9,6 +9,10 @@ import { EXPORT_IN_C } from '../resources/transactionData/exportInC';
 import { EXPORT_IN_P } from '../resources/transactionData/exportInP';
 import { IMPORT_IN_P } from '../resources/transactionData/importInP';
 import { IMPORT_IN_C } from '../resources/transactionData/importInC';
+import {
+  MULTISIG_DELEGATION_FULLY_SIGNED_TX_HEX,
+  MULTISIG_DELEGATION_PARAMS,
+} from '../resources/transactionData/multisigDelegationTx';
 import { HalfSignedAccountTransaction, TransactionType, MPCAlgorithm } from '@bitgo/sdk-core';
 import { secp256k1 } from '@flarenetwork/flarejs';
 import { FlrpContext } from '@bitgo/public-types';
@@ -958,6 +962,22 @@ describe('Flrp test cases', function () {
         const isVerified = await basecoin.verifyTransaction({ txParams, txPrebuild });
         isVerified.should.equal(true);
       });
+
+      it('should verify delegation transaction when txParams.type is the "stake" intent alias', async () => {
+        const txPrebuild = { txHex: MULTISIG_DELEGATION_FULLY_SIGNED_TX_HEX, txInfo: {} };
+        const txParams = {
+          type: 'stake', // intent-type alias used by wallet-platform; must normalise to AddPermissionlessDelegator
+          stakingOptions: {
+            nodeID: MULTISIG_DELEGATION_PARAMS.nodeID,
+            amount: MULTISIG_DELEGATION_PARAMS.stakeAmount,
+            durationSeconds: MULTISIG_DELEGATION_PARAMS.duration * 24 * 60 * 60,
+            rewardAddress: MULTISIG_DELEGATION_PARAMS.rewardAddress,
+          },
+        };
+
+        const isVerified = await basecoin.verifyTransaction({ txParams, txPrebuild });
+        isVerified.should.equal(true);
+      });
     });
 
     describe('verifyTransaction with TSS wallet (Avalanche atomic)', () => {