test(sdk-coin-eos): add coverage for memoId=0 address handling

Add test cases for EOS address handling when memoId equals '0' (the
first receive address index). The string '0' is truthy in JavaScript
but differs from other memo IDs in being numerically zero, which can
trigger subtle falsy-check bugs.

Added tests for:
- getAddressDetails with ?memoId=0
- isValidAddress with ?memoId=0
- isValidMemoId with value '0'
- verifyAddress with ?memoId=0
- verifyTransaction with a tx containing memo='0' and recipient
  address ?memoId=0

All tests confirm the SDK handles memoId=0 correctly. These tests
provide regression coverage against future changes that might
inadvertently break the falsy-safe '0' handling.

Ticket: COINS-1232

Co-Authored-By: Claude <noreply@anthropic.com>
Session-Id: b9aaf785-eb22-46b4-853a-ee44f3d06a1a
Task-Id: 0bb9551a-800d-4e1e-b09f-fe82f03b7754

Author: 2 people

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

@@ -35,6 +35,10 @@ describe('EOS:', function () {
     addressDetails.address.should.equal('ks13k3hdui24');
     addressDetails.memoId.should.equal('1');
 
+    addressDetails = basecoin.getAddressDetails('ks13k3hdui24?memoId=0');
+    addressDetails.address.should.equal('ks13k3hdui24');
+    addressDetails.memoId.should.equal('0');
+
     (() => {
       basecoin.getAddressDetails('ks13k3hdui24?memoId=1&memoId=2');
     }).should.throw();
@@ -52,6 +56,7 @@ describe('EOS:', function () {
     basecoin.isValidAddress('ks13kdh245ls').should.equal(true);
     basecoin.isValidAddress('ks13k3hdui24?memoId=1').should.equal(true);
     basecoin.isValidAddress('ks13k3hdui24?memoId=x').should.equal(true);
+    basecoin.isValidAddress('ks13k3hdui24?memoId=0').should.equal(true);
   });
 
   it('verifyAddress should work', async function () {
@@ -63,6 +68,10 @@ describe('EOS:', function () {
       address: 'ks13kdh245ls?memoId=1',
       rootAddress: 'ks13kdh245ls',
     });
+    await basecoin.verifyAddress({
+      address: 'ks13kdh245ls?memoId=0',
+      rootAddress: 'ks13kdh245ls',
+    });
 
     assert.rejects(basecoin.verifyAddress({ address: 'i1skda3kso43=x', rootAddress: 'i1skda3kso43' }));
     assert.rejects(basecoin.verifyAddress({ address: 'i1skda3kso43?memoId=243432', rootAddress: 'ks13kdh245ls' }));
@@ -83,6 +92,7 @@ describe('EOS:', function () {
   });
 
   it('isValidMemoId should work', function () {
+    basecoin.isValidMemoId('0').should.equal(true);
     basecoin.isValidMemoId('1').should.equal(true);
     basecoin.isValidMemoId('123abc').should.equal(true);
     basecoin.isValidMemoId(EosInputs.string257CharsLong).should.equal(false);
@@ -511,5 +521,20 @@ describe('EOS:', function () {
       const validTransaction = await basecoin.verifyTransaction({ txParams, txPrebuild, wallet, verification });
       validTransaction.should.equal(true);
     });
+
+    it('should verify a transaction with memoId=0', async function () {
+      const txPrebuild = newTxPrebuild();
+      // Transaction with memo='0' (memoId zero is the first receive address)
+      txPrebuild.txHex =
+        '2a02a0053e5a8cf73a56ba0fda11e4d92e0238a4a2aa74fccf46d5a9107468401e0c7a61a3a7b5e7c4470000000100408c7a02ea3055000000000085269d00030233330100a6823403ea3055000000572d3ccdcd0120ceb8437333427c00000000a8ed32322220ceb8437333427c20825019ab3ca98be80300000000000004454f5300000000013000000000000000000000000000000000000000000000000000000000000000000000';
+      txPrebuild.transaction.packed_trx =
+        '1e0c7a61a3a7b5e7c4470000000100408c7a02ea3055000000000085269d00030233330100a6823403ea3055000000572d3ccdcd0120ceb8437333427c00000000a8ed32322220ceb8437333427c20825019ab3ca98be80300000000000004454f5300000000013000';
+      const txParams = newTxParams();
+      txParams.recipients[0].address = 'lionteste212?memoId=0';
+      txParams.txPrebuild = txPrebuild;
+
+      const validTransaction = await basecoin.verifyTransaction({ txParams, txPrebuild, wallet, verification });
+      validTransaction.should.equal(true);
+    });
   });
 });