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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate
# Description: A production-ready boilerplate for building micro-SaaS applications using 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 SupabaseKey

# 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)

# Define Pydantic models
class User(BaseModel):
    """User model"""
    id: int = Field(..., description="User ID")
    email: str = Field(..., description="User email")
    password: str = Field(..., description="User password")

class Product(BaseModel):
    """Product model"""
    id: int = Field(..., description="Product ID")
    name: str = Field(...,

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