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

from fastapi import FastAPI, Depends
from pydantic import BaseModel
from typing import List
import psycopg2
from psycopg2 import extras
from psycopg2.errors import DuplicateTable

# Initialize the FastAPI application
app = FastAPI()

# Define the database connection settings
DB_HOST = "localhost"
DB_NAME = "mydatabase"
DB_USER = "myuser"
DB_PASSWORD = "mypassword"

# Establish a connection to the PostgreSQL database
def get_db_connection():
    """Returns a connection to the PostgreSQL database."""
    return psycopg2.connect(
        host=DB_HOST,
        database=DB_NAME,
        user=DB_USER,
        password=DB_PASSWORD
    )

# Define the Pydantic model for the micro-SaaS application
class User(BaseModel):
    """Represents a user in the micro-SaaS application."""
    id: int
    name: str
    email: str

# Define the route for creating a new user
@app.post("/users/")
def create_user

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