feat(consumables): 添加耗材管理功能模块

添加耗材管理相关功能，包括：
1. 后端模型、路由和控制器
2. 前端页面和组件
3. 耗材分类管理
4. 耗材出入库记录
5. 耗材统计和日志功能
6. 集成到现有系统菜单

backend/models/Consumable.js

@@ -0,0 +1,63 @@
+const { DataTypes } = require('sequelize');
+const { sequelize } = require('../db');
+
+const Consumable = sequelize.define('Consumable', {
+  consumableId: {
+    type: DataTypes.STRING,
+    primaryKey: true,
+    allowNull: false,
+    unique: true
+  },
+  name: {
+    type: DataTypes.STRING,
+    allowNull: false
+  },
+  category: {
+    type: DataTypes.STRING,
+    allowNull: false
+  },
+  unit: {
+    type: DataTypes.STRING,
+    allowNull: false,
+    defaultValue: '个'
+  },
+  currentStock: {
+    type: DataTypes.INTEGER,
+    allowNull: false,
+    defaultValue: 0
+  },
+  minStock: {
+    type: DataTypes.INTEGER,
+    allowNull: false,
+    defaultValue: 10
+  },
+  maxStock: {
+    type: DataTypes.INTEGER,
+    allowNull: false,
+    defaultValue: 100
+  },
+  unitPrice: {
+    type: DataTypes.DECIMAL(10, 2),
+    allowNull: false,
+    defaultValue: 0
+  },
+  supplier: {
+    type: DataTypes.STRING
+  },
+  location: {
+    type: DataTypes.STRING,
+    comment: '存放位置'
+  },
+  description: {
+    type: DataTypes.TEXT
+  },
+  status: {
+    type: DataTypes.STRING,
+    defaultValue: 'active'
+  }
+}, {
+  tableName: 'consumables',
+  timestamps: true
+});
+
+module.exports = Consumable;

backend/models/ConsumableCategory.js

@@ -0,0 +1,35 @@
+const { DataTypes } = require('sequelize');
+const { sequelize } = require('../db');
+
+const ConsumableCategory = sequelize.define('ConsumableCategory', {
+  id: {
+    type: DataTypes.INTEGER,
+    primaryKey: true,
+    autoIncrement: true
+  },
+  name: {
+    type: DataTypes.STRING,
+    allowNull: false,
+    unique: true,
+    comment: '分类名称'
+  },
+  description: {
+    type: DataTypes.STRING,
+    comment: '分类描述'
+  },
+  sortOrder: {
+    type: DataTypes.INTEGER,
+    defaultValue: 0,
+    comment: '排序顺序'
+  },
+  status: {
+    type: DataTypes.STRING,
+    defaultValue: 'active',
+    comment: '状态: active-启用, inactive-停用'
+  }
+}, {
+  tableName: 'consumable_categories',
+  timestamps: true
+});
+
+module.exports = ConsumableCategory;

backend/models/ConsumableLog.js

@@ -0,0 +1,68 @@
+const { DataTypes } = require('sequelize');
+const { sequelize } = require('../db');
+const Consumable = require('./Consumable');
+
+const ConsumableLog = sequelize.define('ConsumableLog', {
+  id: {
+    type: DataTypes.INTEGER,
+    primaryKey: true,
+    autoIncrement: true
+  },
+  consumableId: {
+    type: DataTypes.STRING,
+    allowNull: false,
+    comment: '耗材ID'
+  },
+  consumableName: {
+    type: DataTypes.STRING,
+    allowNull: false,
+    comment: '耗材名称'
+  },
+  operationType: {
+    type: DataTypes.ENUM('in', 'out', 'create', 'update', 'delete', 'adjust', 'import'),
+    allowNull: false,
+    comment: '操作类型'
+  },
+  quantity: {
+    type: DataTypes.INTEGER,
+    defaultValue: 0,
+    comment: '变动数量（入库为正，出库为负）'
+  },
+  previousStock: {
+    type: DataTypes.INTEGER,
+    allowNull: false,
+    comment: '操作前库存'
+  },
+  currentStock: {
+    type: DataTypes.INTEGER,
+    allowNull: false,
+    comment: '操作后库存'
+  },
+  operator: {
+    type: DataTypes.STRING,
+    comment: '操作人'
+  },
+  reason: {
+    type: DataTypes.STRING,
+    comment: '操作原因'
+  },
+  notes: {
+    type: DataTypes.TEXT,
+    comment: '备注'
+  },
+  relatedId: {
+    type: DataTypes.STRING,
+    comment: '关联ID（如订单号、盘点ID等）'
+  }
+}, {
+  tableName: 'consumable_logs',
+  timestamps: true,
+  comment: '耗材操作日志表'
+});
+
+ConsumableLog.belongsTo(Consumable, {
+  foreignKey: 'consumableId',
+  onDelete: 'CASCADE'
+});
+
+module.exports = ConsumableLog;

backend/models/ConsumableRecord.js

@@ -0,0 +1,64 @@
+const { DataTypes } = require('sequelize');
+const { sequelize } = require('../db');
+const Consumable = require('./Consumable');
+
+const ConsumableRecord = sequelize.define('ConsumableRecord', {
+  recordId: {
+    type: DataTypes.UUID,
+    primaryKey: true,
+    defaultValue: DataTypes.UUIDV4,
+    allowNull: false,
+    unique: true
+  },
+  consumableId: {
+    type: DataTypes.STRING,
+    allowNull: false,
+    references: {
+      model: Consumable,
+      key: 'consumableId'
+    }
+  },
+  type: {
+    type: DataTypes.ENUM('in', 'out'),
+    allowNull: false
+  },
+  quantity: {
+    type: DataTypes.INTEGER,
+    allowNull: false
+  },
+  previousStock: {
+    type: DataTypes.INTEGER,
+    allowNull: false
+  },
+  currentStock: {
+    type: DataTypes.INTEGER,
+    allowNull: false
+  },
+  operator: {
+    type: DataTypes.STRING,
+    allowNull: false
+  },
+  reason: {
+    type: DataTypes.STRING
+  },
+  recipient: {
+    type: DataTypes.STRING
+  },
+  notes: {
+    type: DataTypes.TEXT
+  }
+}, {
+  tableName: 'consumable_records',
+  timestamps: true
+});
+
+ConsumableRecord.belongsTo(Consumable, { 
+  foreignKey: 'consumableId',
+  onDelete: 'CASCADE'
+});
+Consumable.hasMany(ConsumableRecord, { 
+  foreignKey: 'consumableId',
+  onDelete: 'CASCADE'
+});
+
+module.exports = ConsumableRecord;