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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate
# ===============================================
# A production-ready starter boilerplate for building micro-SaaS applications
# using FastAPI, Pydantic v2, and PostgreSQL Vector Search Extension.

import os
import uvicorn
from fastapi import FastAPI, Depends, HTTPException
from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
from pydantic import BaseModel, Field
from typing import Optional
from psycopg2 import connect
from psycopg2.extras import DictCursor
from cloudflare import CloudflareWorkers

# Define the database connection settings
DB_HOST = os.environ.get("DB_HOST", "localhost")
DB_PORT = os.environ.get("DB_PORT", 5432)
DB_USER = os.environ.get("DB_USER", "postgres")
DB_PASSWORD = os.environ.get("DB_PASSWORD", "postgres")
DB_NAME = os.environ.get("DB_NAME", "micro_saaS")

# Define the Cloudflare Workers settings
CF_ACCOUNT_ID = os.environ.get("CF_ACCOUNT_ID")
CF_API_TOKEN = os.environ.get("CF_API_TOKEN")
CF_WORKER_NAME = os.environ.get("CF_WORKER_NAME")

# Create a new FastAPI application

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