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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate
# Description: Production-ready boilerplate for building micro-SaaS applications with FastAPI and Pydantic v2
# Author: Elite Software Architect

from fastapi import FastAPI, Depends, HTTPException
from pydantic import BaseModel, Field
from typing import Optional
from supabase import create_client, Client
from supabase.py import Database
from cloudflare import Cloudflare

# Initialize FastAPI app
app = FastAPI()

# Initialize Supabase client
SUPABASE_URL = "https://your-supabase-url.supabase.co"
SUPABASE_KEY = "your-supabase-key"
SUPABASE_SECRET = "your-supabase-secret"
supabase: Client = create_client(SUPABASE_URL, SUPABASE_KEY)

# Initialize Cloudflare client
CLOUDFLARE_EMAIL = "your-cloudflare-email"
CLOUDFLARE_API_KEY = "your-cloudflare-api-key"
CLOUDFLARE_ZONE_ID = "your-cloudflare-zone-id"
cloudflare = Cloudflare(email=CLOUDFLARE_EMAIL, api_key=CLOUDFLARE_API_KEY)

# Define Pydantic models
class User(BaseModel):
    """User model

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