Fix: Pass required arguments to setupPlotButtons

- setupPlotButtons requires handlePlotClick and handleEncounterClick callbacks
- Pass sendPlotProgression and openEncounterModal as arguments
- removeAlternatePresentCharactersPanel is already correctly imported

index.js

@@ -274,7 +274,7 @@ async function initUI() {
     initPromptsEditor();
 
     // Initialize plot buttons
-    setupPlotButtons();
+    setupPlotButtons(sendPlotProgression, openEncounterModal);
 
     // Initialize classic stats buttons
     setupClassicStatsButtons();