feat: add comprehensive inventory management system

[ljluestc]

1. 环境准备

# 确保 MySQL 和 Redis 正在运行
brew services start mysql
brew services start redis

# 创建数据库
mysql -u root -e "CREATE DATABASE simple_admin;"

2. 启动服务

# 启动 RPC 服务
cd rpc && go run . &

# 启动 API 服务
cd api && go run . &

3. 测试仓库管理

# 创建仓库
curl -X POST http://localhost:9100/warehouse/create \
  -H "Content-Type: application/json" \
  -d '{
    "name": "主仓库",
    "location": "123 工业街",
    "capacity": 10000,
    "description": "主要存储仓库"
  }'

# 查询仓库列表
curl -X POST http://localhost:9100/warehouse/list \
  -H "Content-Type: application/json" \
  -d '{"page": 1, "pageSize": 10}'

4. 测试产品管理

# 创建产品
curl -X POST http://localhost:9100/product/create \
  -H "Content-Type: application/json" \
  -d '{
    "name": "笔记本电脑",
    "sku": "LT-001",
    "price": 1299.99,
    "category": "电子产品",
    "brand": "TechCorp"
  }'

# 查询产品列表
curl -X POST http://localhost:9100/product/list \
  -H "Content-Type: application/json" \
  -d '{"page": 1, "pageSize": 10}'

5. 测试库存管理

# 创建库存记录
curl -X POST http://localhost:9100/inventory/create \
  -H "Content-Type: application/json" \
  -d '{
    "product_id": 1,
    "warehouse_id": 1,
    "quantity": 100,
    "min_stock_level": 10,
    "max_stock_level": 500
  }'

# 查询库存列表
curl -X POST http://localhost:9100/inventory/list \
  -H "Content-Type: application/json" \
  -d '{"page": 1, "pageSize": 10}'

6. 测试库存变动

# 记录入库操作
curl -X POST http://localhost:9100/stock_movement/create \
  -H "Content-Type: application/json" \
  -d '{
    "product_id": 1,
    "warehouse_id": 1,
    "movement_type": "IN",
    "quantity": 25,
    "reference": "PO-2024-001",
    "notes": "收到新库存"
  }'

# 查询库存变动记录
curl -X POST http://localhost:9100/stock_movement/list \
  -H "Content-Type: application/json" \
  -d '{"page": 1, "pageSize": 10}'