Add equipment crafting system

- Add crafting-recipes.ts with blueprint definitions and material requirements
- Update crafting-slice.ts with equipment crafting functions
- Add EquipmentCraftingProgress type and state
- Update CraftingTab.tsx with new Craft tab for equipment crafting
- Add material deletion functionality
- Update store.ts with equipment crafting methods
- Update page.tsx to pass new props to CraftingTab

Features:
- Players can craft equipment from discovered blueprints
- Crafting requires materials and mana
- Materials are obtained from loot drops
- New Craft tab in the crafting interface
- Shows blueprint details and material requirements

src/lib/game/store.ts

@@ -47,7 +47,8 @@ import {
   type FamiliarBonuses,
   DEFAULT_FAMILIAR_BONUSES,
 } from './familiar-slice';
-import { rollLootDrops } from './data/loot-drops';
+import { rollLootDrops, LOOT_DROPS } from './data/loot-drops';
+import { CRAFTING_RECIPES, canCraftRecipe } from './data/crafting-recipes';
 
 // Default empty effects for when effects aren't provided
 const DEFAULT_EFFECTS: ComputedEffects = {
@@ -560,6 +561,9 @@ function makeInitial(overrides: Partial<GameState> = {}): GameState {
       blueprints: [],
     },
     lootDropsToday: 0,
+    
+    // Equipment Crafting Progress
+    equipmentCraftingProgress: null,
 
     // Achievements
     achievements: {
@@ -1912,6 +1916,98 @@ export const useGameStore = create<GameStore>()(
         return instance.totalCapacity - instance.usedCapacity;
       },
       
+      // ─── Equipment Crafting (from blueprints) ───────────────────────────────────
+      
+      startCraftingEquipment: (blueprintId: string) => {
+        const state = get();
+        const recipe = CRAFTING_RECIPES[blueprintId];
+        if (!recipe) return false;
+
+        // Check if player has the blueprint
+        if (!state.lootInventory.blueprints.includes(blueprintId)) return false;
+
+        // Check materials and mana
+        const { canCraft } = canCraftRecipe(
+          recipe,
+          state.lootInventory.materials,
+          state.rawMana
+        );
+
+        if (!canCraft) return false;
+
+        // Deduct materials
+        const newMaterials = { ...state.lootInventory.materials };
+        for (const [matId, amount] of Object.entries(recipe.materials)) {
+          newMaterials[matId] = (newMaterials[matId] || 0) - amount;
+          if (newMaterials[matId] <= 0) {
+            delete newMaterials[matId];
+          }
+        }
+
+        // Start crafting progress
+        set((state) => ({
+          lootInventory: {
+            ...state.lootInventory,
+            materials: newMaterials,
+          },
+          rawMana: state.rawMana - recipe.manaCost,
+          currentAction: 'craft',
+          equipmentCraftingProgress: {
+            blueprintId,
+            equipmentTypeId: recipe.equipmentTypeId,
+            progress: 0,
+            required: recipe.craftTime,
+            manaSpent: recipe.manaCost,
+          },
+          log: [`🔨 Started crafting ${recipe.name}...`, ...state.log.slice(0, 49)],
+        }));
+
+        return true;
+      },
+
+      cancelEquipmentCrafting: () => {
+        set((state) => {
+          const progress = state.equipmentCraftingProgress;
+          if (!progress) return {};
+
+          const recipe = CRAFTING_RECIPES[progress.blueprintId];
+          if (!recipe) return { currentAction: 'meditate', equipmentCraftingProgress: null };
+
+          // Refund 50% of mana
+          const manaRefund = Math.floor(progress.manaSpent * 0.5);
+
+          return {
+            currentAction: 'meditate',
+            equipmentCraftingProgress: null,
+            rawMana: state.rawMana + manaRefund,
+            log: [`🚫 Crafting cancelled. Refunded ${manaRefund} mana.`, ...state.log.slice(0, 49)],
+          };
+        });
+      },
+
+      deleteMaterial: (materialId: string, amount: number) => {
+        set((state) => {
+          const currentAmount = state.lootInventory.materials[materialId] || 0;
+          const newAmount = Math.max(0, currentAmount - amount);
+          const newMaterials = { ...state.lootInventory.materials };
+
+          if (newAmount <= 0) {
+            delete newMaterials[materialId];
+          } else {
+            newMaterials[materialId] = newAmount;
+          }
+
+          const dropName = LOOT_DROPS[materialId]?.name || materialId;
+          return {
+            lootInventory: {
+              ...state.lootInventory,
+              materials: newMaterials,
+            },
+            log: [`🗑️ Deleted ${amount}x ${dropName}.`, ...state.log.slice(0, 49)],
+          };
+        });
+      },
+      
       // ─── Floor Navigation ────────────────────────────────────────────────────────
       
       setClimbDirection: (direction: 'up' | 'down') => {