Fix: Use run command to capture function output in test

Author: enabled404

test/integration/exposed-tokens.bats

@@ -52,10 +52,13 @@ EOF
     cat > "$HOME/.openclaw/app.log" << 'EOF'
 [2024-05-01 10:00:00] INFO: Authenticating with xoxb-12345-67890-abcdef
 EOF
+
+    # Verify the token pattern exists
     run grep -E "xoxb-" "$HOME/.openclaw/app.log"
     [ "$status" -eq 0 ]
 
-    check_exposed_tokens
+    # Run the check and capture output
+    run check_exposed_tokens
 
     assert_output --partial "[FAIL]"
     assert_output --partial "xoxb-"