Fixes #20: Fix JSON parse errors and empty equipment tab

- Replace JSON.parse() with repairJSON() in desktop.js and mobile.js
  to handle malformed JSON from infoBox/userStats data
- Add defensive initialization in renderEquipment(): ensure showEquipment
  defaults to true and equipment data structure exists
- Add explicit renderEquipment() call during initialization

index.js

@@ -349,6 +349,8 @@ jQuery(async () => {
             initThoughtBasedExpressions();
             updateFabWidgets();
             updateStripWidgets();
+            // Explicit initial render of equipment to ensure it's visible
+            renderEquipment();
         } catch (error) {
             console.error('[RPG Companion] Chat data load failed, using defaults:', error);
         }