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/crafting-slice.ts

@@ -1,9 +1,10 @@
 // ─── Crafting Store Slice ─────────────────────────────────────────────────────────
 // Handles equipment and enchantment system: design, prepare, apply stages
 
-import type { GameState, EquipmentInstance, AppliedEnchantment, EnchantmentDesign, DesignEffect, EquipmentSlot } from './types';
+import type { GameState, EquipmentInstance, AppliedEnchantment, EnchantmentDesign, DesignEffect, EquipmentSlot, EquipmentCraftingProgress, LootInventory } from './types';
 import { EQUIPMENT_TYPES, type EquipmentCategory } from './data/equipment';
 import { ENCHANTMENT_EFFECTS, calculateEffectCapacityCost } from './data/enchantment-effects';
+import { CRAFTING_RECIPES, canCraftRecipe, type CraftingRecipe } from './data/crafting-recipes';
 import { SPELLS_DEF } from './constants';
 
 // ─── Helper Functions ─────────────────────────────────────────────────────────
@@ -88,6 +89,11 @@ export interface CraftingActions {
   // Disenchanting
   disenchantEquipment: (instanceId: string) => void;
 
+  // Equipment Crafting (from blueprints)
+  startCraftingEquipment: (blueprintId: string) => boolean;
+  cancelEquipmentCrafting: () => void;
+  deleteMaterial: (materialId: string, amount: number) => void;
+
   // Computed getters
   getEquipmentSpells: () => string[];
   getEquipmentEffects: () => Record<string, number>;
@@ -502,6 +508,97 @@ export function createCraftingSlice(
       if (!instance) return 0;
       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
+      const { canCraft, missingMaterials, missingMana } = 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,
+        },
+      }));
+
+      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: [`🚫 Equipment 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 = materialId; // Could look up in LOOT_DROPS for proper name
+        return {
+          lootInventory: {
+            ...state.lootInventory,
+            materials: newMaterials,
+          },
+          log: [`🗑️ Deleted ${amount}x ${dropName}.`, ...state.log.slice(0, 49)],
+        };
+      });
+    },
   };
 }
 
@@ -620,6 +717,59 @@ export function processCraftingTick(
     }
   }
 
+  // Process equipment crafting progress
+  if (state.currentAction === 'craft' && state.equipmentCraftingProgress) {
+    const craft = state.equipmentCraftingProgress;
+    const progress = craft.progress + 0.04; // HOURS_PER_TICK
+
+    if (progress >= craft.required) {
+      // Crafting complete - create the equipment!
+      const recipe = CRAFTING_RECIPES[craft.blueprintId];
+      const equipType = recipe ? EQUIPMENT_TYPES[recipe.equipmentTypeId] : null;
+
+      if (recipe && equipType) {
+        const instanceId = generateInstanceId();
+        const newInstance: EquipmentInstance = {
+          instanceId,
+          typeId: recipe.equipmentTypeId,
+          name: recipe.name,
+          enchantments: [],
+          usedCapacity: 0,
+          totalCapacity: equipType.baseCapacity,
+          rarity: recipe.rarity,
+          quality: 100,
+        };
+
+        updates = {
+          ...updates,
+          equipmentCraftingProgress: null,
+          currentAction: 'meditate',
+          equipmentInstances: {
+            ...state.equipmentInstances,
+            [instanceId]: newInstance,
+          },
+          totalCraftsCompleted: (state.totalCraftsCompleted || 0) + 1,
+          log: [`🔨 Crafted ${recipe.name}!`, ...log],
+        };
+      } else {
+        updates = {
+          ...updates,
+          equipmentCraftingProgress: null,
+          currentAction: 'meditate',
+          log: ['⚠️ Crafting failed - invalid recipe!', ...log],
+        };
+      }
+    } else {
+      updates = {
+        ...updates,
+        equipmentCraftingProgress: {
+          ...craft,
+          progress,
+        },
+      };
+    }
+  }
+
   return updates;
 }