fix unit tests and error messages

lifecycle.go

@@ -87,6 +87,9 @@ func (app *Lifecycle) WithLogger(logger *slog.Logger) *Lifecycle {
 
 // Logger returns the logger for the lifecycle.
 func (app *Lifecycle) Logger() *slog.Logger {
+	if app == nil {
+		panic("lifecycle is nil, cannot get logger")
+	}
 	if app.opts.Logger == nil {
 		app.opts.Logger = slog.Default()
 	}
@@ -182,12 +185,16 @@ func (app *Lifecycle) require(logger *slog.Logger, unique bool, modules ...*Modu
 		// Check if the module has already been set up
 		if _, ok := app.setupTracker[mod.name]; ok {
 			if unique {
-				return fmt.Errorf("module %s is already set up, cannot require it again", mod)
+				return fmt.Errorf("module %s is already set up, cannot require again", mod)
 			}
 
 			app.Logger().Warn("module already set up, ignoring", "module", mod)
+
+			// Mark duplicate module as loaded
 			mod.loaded = true
+			mod.lifecycle = app
 			mod.logger = logger
+
 			continue
 		}