Add spells rolls and enhance CSS styling

- Add spell roll functionality to character sheets
- Enhance CSS and LESS styling for better visual presentation
- Update character templates and models
- Remove old backup files (roll-old.mjs, roll.mjs.backup)
- Improve character combat and equipment templates
- Update utility functions and actor documents

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

prism-rpg.mjs

@@ -37,7 +37,11 @@ Hooks.once("init", function () {
   }
 
   CONFIG.ui.combat = PrismRPGCombatTracker
-  CONFIG.Combat.documentClass = PrismRPGCombat;
+  CONFIG.Combat.documentClass = PrismRPGCombat
+  CONFIG.Combat.initiative = {
+    formula: "1d20 + @subAttributes.initiative.value",
+    decimals: 2
+  }
 
   CONFIG.Actor.documentClass = documents.PrismRPGActor
   CONFIG.Actor.dataModels = {