fix: Add debugging to get_wallet_address to diagnose CLI failure

- Check if CLI exists and is executable
- Capture exit code and output from wallet address command
- Log warning with exit code and output when command fails
- Helps diagnose why wallet address retrieval fails in CI

scripts/multi-node/cross-node-transaction-test.sh

@@ -74,12 +74,24 @@ create_test_wallet() {
 # Get wallet address
 get_wallet_address() {
     local wallet_name="$1"
-    # Try different wallet address command syntaxes
-    local address=$(${CLI_PATH} wallet address --name "${wallet_name}" 2>/dev/null || echo "")
-    if [ -z "$address" ]; then
-        # Try alternative syntax
-        address=$(${CLI_PATH} wallet list --name "${wallet_name}" 2>/dev/null | grep -o "ait1[a-z0-9]*" | head -1 || echo "")
+    
+    # Check if CLI exists and is executable
+    if [ ! -x "${CLI_PATH}" ]; then
+        log_error "CLI not found or not executable: ${CLI_PATH}"
+        echo ""
+        return 1
     fi
+    
+    # Try different wallet address command syntaxes
+    local address=$(${CLI_PATH} wallet address --name "${wallet_name}" 2>&1)
+    local exit_code=$?
+    
+    if [ $exit_code -ne 0 ] || [ -z "$address" ]; then
+        log_warning "wallet address command failed (exit code: ${exit_code}, output: ${address})"
+        # Try alternative syntax
+        address=$(${CLI_PATH} wallet list --name "${wallet_name}" 2>&1 | grep -o "ait1[a-z0-9]*" | head -1 || echo "")
+    fi
+    
     echo "$address"
 }