fix(eth): TxidPage missing explorer link for swaps/sends

chrome-extension/src/background/chains/ethereumHandler.ts

@@ -1321,12 +1321,22 @@ const sendTransaction = async (params: any, KEEPKEY_WALLET: any, ADDRESS: string
     response.txid = txHash;
     await requestStorage.updateEventById(id, response);
 
+    // Defensive explorer-link resolution: if the stored provider was built
+    // through a code path that didn't carry explorerTxLink (e.g., older
+    // saved state), look it up from the static EIP155_CHAINS table by
+    // networkId. Otherwise the TxidPage gets no link and the user sees a
+    // bare hex hash with no way to navigate to etherscan.
+    let explorerTxLink = currentProvider.explorerTxLink;
+    if (!explorerTxLink && currentProvider.networkId) {
+      explorerTxLink = EIP155_CHAINS[currentProvider.networkId]?.explorerTxLink;
+    }
+
     //push event
     chrome.runtime.sendMessage({
       action: 'transaction_complete',
       eventId: id,
       txHash: txHash,
-      explorerTxLink: currentProvider.explorerTxLink,
+      explorerTxLink,
       networkId: currentProvider.networkId,
     });
 

chrome-extension/src/background/index.ts

@@ -1001,6 +1001,12 @@ chrome.runtime.onMessage.addListener((message: any, sender: any, sendResponse: a
                       name: chainInfo.name,
                       providerUrl: chainInfo.rpc,
                       fallbacks: [],
+                      // Carry the static chain's explorer URL forward so
+                      // transaction_complete events fired from sendTransaction
+                      // have somewhere to deep-link the txid. Without this
+                      // the TxidPage shows just the hex hash with no link.
+                      explorerTxLink: chainInfo.explorerTxLink,
+                      networkId: asset.networkId,
                     };
                   } else {
                     console.error(tag, 'Network not found in custom or static chains:', asset.networkId);