improve tool call detection func

.gitignore

@@ -13,4 +13,11 @@
 /.godex/providers.yaml
 .git/
 .gtree
-/godex
+
+# Dyno test harness generated files
+/dyno/logs/
+/dyno/mocks/
+/dyno/*.so
+/dyno/*.c
+/dyno/strace_wrapper.sh
+/dyno/godex

cmd/godex/main.go

@@ -2524,7 +2524,7 @@ func looksLikeToolCall(s string) bool {
 	if !strings.Contains(lower, "toolcall") {
 		return false
 	}
-	return strings.Contains(s, "{") && strings.Contains(s, "}")
+	return strings.Contains(s, "{") || strings.Contains(s, "}")
 }
 
 func callTool(ctx context.Context, servers []MCPServer, name string, args map[string]interface{}, timeoutSecs int, autoDenyRestrictedPaths bool) (string, error) {