fix: update Steady Hand prestige upgrade with real enchantment power effect

src/lib/game/constants/prestige.ts

@@ -5,7 +5,7 @@ export const PRESTIGE_DEF: Record<string, PrestigeDef> = {
   insightAmp:   { name: "Insight Amp",   desc: "+25% insight gain",          max: 4,  cost: 1500 },
   spireKey:     { name: "Spire Key",     desc: "Start at floor +2",          max: 5,  cost: 4000 },
   temporalEcho: { name: "Temporal Echo", desc: "+10% mana generation",       max: 5,  cost: 3000 },
-  steadyHand:   { name: "Steady Hand",   desc: "-15% durability loss",       max: 5,  cost: 1200 },
+  steadyHand:   { name: "Steady Hand",   desc: "+15% enchantment power",      max: 5,  cost: 1200 },
   ancientKnowledge: { name: "Ancient Knowledge", desc: "Start with blueprint discovered", max: 5, cost: 2000 },
   elementalAttune: { name: "Elemental Attunement", desc: "+25 elemental mana cap", max: 10, cost: 600 },
   spellMemory:  { name: "Spell Memory",  desc: "Start with random spell learned", max: 3, cost: 2500 },

src/lib/game/effects.ts

@@ -90,9 +90,12 @@ export interface UnifiedEffects extends ComputedEffects {
 export function computeAllEffects(
   equipmentInstances: Record<string, EquipmentInstance>,
   equippedInstances: Record<string, string | null>,
+  prestigeUpgrades?: Record<string, number>,
 ): UnifiedEffects {
   const upgradeEffects = computeEffects();
-  const equipmentEffects = computeEquipmentEffects(equipmentInstances, equippedInstances, upgradeEffects.enchantmentPowerMultiplier);
+  const steadyHandLevel = (prestigeUpgrades?.steadyHand || 0);
+  const enchantmentPowerMultiplier = upgradeEffects.enchantmentPowerMultiplier * (1 + steadyHandLevel * 0.15);
+  const equipmentEffects = computeEquipmentEffects(equipmentInstances, equippedInstances, enchantmentPowerMultiplier);
   const disciplineEffects = computeDisciplineEffects();
 
   const perElementCapBonus: Record<string, number> = { ...upgradeEffects.perElementCapBonus };
@@ -158,10 +161,12 @@ export function computeAllEffects(
 export function getUnifiedEffects(state: {
   equipmentInstances?: Record<string, EquipmentInstance>;
   equippedInstances?: Record<string, string | null>;
+  prestigeUpgrades?: Record<string, number>;
 }): UnifiedEffects {
   return computeAllEffects(
     state.equipmentInstances || {},
     state.equippedInstances || {},
+    state.prestigeUpgrades,
   );
 }
 

src/lib/game/stores/gameHooks.ts

@@ -29,12 +29,14 @@ export function useGameLoop() {
 export function useUnifiedEffects() {
   const equippedInstances = useCraftingStore((s) => s.equippedInstances);
   const equipmentInstances = useCraftingStore((s) => s.equipmentInstances);
+  const prestigeUpgrades = usePrestigeStore((s) => s.prestigeUpgrades);
   const disciplineEffects = computeDisciplineEffects();
 
   return {
     ...getUnifiedEffects({
       equippedInstances,
       equipmentInstances,
+      prestigeUpgrades,
     }),
     disciplineEffects,
   };
@@ -55,6 +57,7 @@ export function useManaStats() {
   const upgradeEffects = getUnifiedEffects({
     equippedInstances,
     equipmentInstances,
+    prestigeUpgrades,
   });
 
   const maxMana = computeMaxMana(
@@ -105,12 +108,14 @@ export function useManaStats() {
  */
 export function useCombatStats() {
   const signedPacts = usePrestigeStore((s) => s.signedPacts);
+  const prestigeUpgrades = usePrestigeStore((s) => s.prestigeUpgrades);
   const equippedInstances = useCraftingStore((s) => s.equippedInstances);
   const equipmentInstances = useCraftingStore((s) => s.equipmentInstances);
 
   const upgradeEffects = getUnifiedEffects({
     equippedInstances,
     equipmentInstances,
+    prestigeUpgrades,
   });
 
   return {

src/lib/game/stores/gameStore.ts

@@ -95,9 +95,12 @@ export const useGameStore = create<GameCoordinatorStore>()(
           const addLog = (msg: string) => writes.logs.push(msg);
 
           // Compute equipment and discipline effects
+          const steadyHandLevel = ctx.prestige.prestigeUpgrades.steadyHand || 0;
+          const enchantmentPowerMultiplier = 1 + steadyHandLevel * 0.15;
           const equipmentEffects = computeEquipmentEffects(
             ctx.crafting.equipmentInstances || {},
-            ctx.crafting.equippedInstances || {}
+            ctx.crafting.equippedInstances || {},
+            enchantmentPowerMultiplier,
           );
           const disciplineEffects = computeDisciplineEffects();
           const allSpecials = new Set<string>([