fix: add Critical Chance display to Stats tab Combat Stats section

src/lib/game/hooks/useGameDerived.ts

@@ -17,7 +17,9 @@ import {
   getFloorElement,
   calcDamage,
   getElementalBonus,
+  getBoonBonuses,
 } from '../utils';
+import { computeEquipmentEffects } from '../effects';
 import { computePactMultiplier, computePactInsightMultiplier } from '../utils/pact-utils';
 
 import { ELEMENTS, SPELLS_DEF, getStudySpeedMultiplier, getStudyCostMultiplier, HOURS_PER_TICK, TICK_MS } from '../constants';
@@ -120,6 +122,8 @@ export function useCombatStats() {
   const currentFloor = useCombatStore((s) => s.currentFloor);
   const activeSpell = useCombatStore((s) => s.activeSpell);
   const { upgradeEffects } = useManaStats();
+  const equipmentInstances = useGameStore((s) => s.crafting.equipmentInstances);
+  const equippedInstances = useGameStore((s) => s.crafting.equippedInstances);
 
   const floorElem = useMemo(
     () => getFloorElement(currentFloor),
@@ -209,6 +213,22 @@ export function useCombatStats() {
     };
   }, [activeSpellDef, signedPacts, activeSpell, floorElem, isGuardianFloor, pactMultiplier]);
 
+  // Crit chance: sum equipment bonus (decimal) + pact boon bonus (percentage points) + upgrade bonus (decimal)
+  const critChance = useMemo(() => {
+    const equipEffects = computeEquipmentEffects(equipmentInstances, equippedInstances);
+    const equipCritBonus = equipEffects.bonuses.critChance || 0;
+    const boons = getBoonBonuses(signedPacts);
+    const boonCritChance = boons.critChance / 100; // Convert percentage points to decimal
+    const upgradeCritBonus = upgradeEffects.critChanceBonus || 0;
+    return equipCritBonus + boonCritChance + upgradeCritBonus;
+  }, [equipmentInstances, equippedInstances, signedPacts, upgradeEffects.critChanceBonus]);
+
+  // Crit damage: base multiplier (1.5) + pact boon bonus (percentage points)
+  const critDamage = useMemo(() => {
+    const boons = getBoonBonuses(signedPacts);
+    return (upgradeEffects.critDamageMultiplier || 1.5) + boons.critDamage / 100;
+  }, [signedPacts, upgradeEffects.critDamageMultiplier]);
+
   return {
     floorElem,
     floorElemDef,
@@ -219,6 +239,8 @@ export function useCombatStats() {
     pactInsightMultiplier,
     dps,
     damageBreakdown,
+    critChance,
+    critDamage,
   };
 }