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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate
# =====================================================
# This is a production-ready developer code asset for building micro-SaaS applications
# using FastAPI and Pydantic v2. It includes a basic project structure, type-safe
# models, and API endpoints for common CRUD operations.

from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
from typing import List, Optional
from sqlalchemy import create_engine, Column, Integer, String
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker

# Initialize the FastAPI application
app = FastAPI()

# Define the database connection URL
SQLALCHEMY_DATABASE_URL = "sqlite:///example.db"

# Create a database engine
engine = create_engine(SQLALCHEMY_DATABASE_URL)

# Create a session maker
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

# Create a base class for declarative models
Base = declarative_base()

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

# Define a Pydantic

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