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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate
# ======================================================

from fastapi import FastAPI, HTTPException
from fastapi.responses import JSONResponse
from pydantic import BaseModel, validator
from typing import Optional
import uvicorn
import logging

# Configure logging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

# Define the application
app = FastAPI(title="FastAPI Pydantic v2 Micro-SaaS Boilerplate",
              description="A high-performance micro-SaaS boilerplate",
              version="1.0.0")

# Define a Pydantic model for user data
class User(BaseModel):
    """User data model"""
    id: int
    name: str
    email: str

@validator('email')
    def validate_email(cls, v):
        """Validate email address"""
        if '@' not in v:
            raise ValueError('Invalid email address')
        return v

# Define a route for creating a new user
@app.post("/users/", response_model=User)
async def create_user(user: User):
    """Create a new user"""
    try:
        # Simulate a database operation
        logger.info(f"Creating user {

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