feat: Implement combat special effects

- BATTLE_FURY: +10% damage per consecutive hit (resets on floor change)
- COMBO_MASTER: Every 5th attack deals 3x damage
- ADRENALINE_RUSH: Restore 5% mana on floor clear
- Add hitsThisTick tracking for proper consecutive hit counting
- Reset consecutiveHits when floor changes

src/lib/game/store.ts

@@ -357,6 +357,9 @@ export const useGameStore = create<GameStore>()(
         const state = get();
         if (state.gameOver || state.paused) return;
 
+        // Track hits this tick for BATTLE_FURY
+        let hitsThisTick = 0;
+
         // Compute unified effects (includes skill upgrades AND equipment enchantments)
         const effects = getUnifiedEffects(state);
 
@@ -649,6 +652,23 @@ export const useGameStore = create<GameStore>()(
                 dmg *= 1.5;
               }
 
+              // BATTLE_FURY: +10% damage per consecutive hit (resets on floor change)
+              const currentConsecutiveHits = state.consecutiveHits + hitsThisTick;
+              if (hasSpecial(effects, SPECIAL_EFFECTS.BATTLE_FURY)) {
+                dmg *= 1 + (currentConsecutiveHits * 0.1);
+              }
+
+              // COMBO_MASTER: Every 5th attack deals 3x damage
+              const totalHitsThisLoop = state.totalTicks || 0;
+              const isFifthHit = ((totalHitsThisLoop + hitsThisTick) % 5) === 4; // 5th, 10th, 15th, etc.
+              if (hasSpecial(effects, SPECIAL_EFFECTS.COMBO_MASTER) && isFifthHit) {
+                dmg *= 3;
+                log = [`💥 Combo Master! Triple damage!`, ...log.slice(0, 49)];
+              }
+
+              // Track hits for BATTLE_FURY
+              hitsThisTick++;
+
               // Familiar bonuses
               dmg *= familiarBonuses.damageMultiplier;
               dmg *= familiarBonuses.elementalDamageMultiplier;
@@ -732,6 +752,13 @@ export const useGameStore = create<GameStore>()(
                   }
                 }
 
+                // ADRENALINE_RUSH: Restore 5% mana on floor clear
+                if (hasSpecial(effects, SPECIAL_EFFECTS.ADRENALINE_RUSH)) {
+                  const adrenalineHeal = maxMana * 0.05;
+                  rawMana = Math.min(rawMana + adrenalineHeal, maxMana);
+                  log = [`⚡ Adrenaline Rush! Restored ${Math.floor(adrenalineHeal)} mana!`, ...log.slice(0, 49)];
+                }
+
                 // Move to next floor based on direction
                 const nextFloor = climbDirection === 'up' 
                   ? Math.min(currentFloor + 1, 100)
@@ -755,7 +782,10 @@ export const useGameStore = create<GameStore>()(
                 newCombo.count = Math.floor(newCombo.count * 0.5);
                 newCombo.multiplier = 1 + newCombo.count * 0.02;
                 newCombo.elementChain = [];
-                
+
+                // Reset consecutive hits on floor change
+                set((s) => ({ ...s, consecutiveHits: 0 }));
+
                 // Reset ALL spell progress on floor change
                 equipmentSpellStates = equipmentSpellStates.map(s => ({ ...s, castProgress: 0 }));
                 spellState = { ...spellState, castProgress: 0 };
@@ -891,6 +921,7 @@ export const useGameStore = create<GameStore>()(
           totalDamageDealt,
           totalSpellsCast,
           familiars,
+          consecutiveHits: state.currentAction === 'climb' ? state.consecutiveHits + hitsThisTick : state.consecutiveHits,
           ...craftingUpdates,
         });
       },