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Preview Code

```python
# AI Dev Tool: PostgreSQL Vector Search Extension CLI Automation Tool
# Description: A command-line interface tool for automating PostgreSQL vector search extension tasks
# Requirements: Python 3.8+, psycopg2, numpy

import psycopg2
import numpy as np
from typing import List, Tuple

def connect_to_postgres(host: str, database: str, user: str, password: str) -> psycopg2.Connection:
    """
    Establish a connection to a PostgreSQL database.

    Args:
    - host (str): The hostname or IP address of the PostgreSQL server.
    - database (str): The name of the database to connect to.
    - user (str): The username to use for the connection.
    - password (str): The password to use for the connection.

    Returns:
    - A psycopg2 Connection object.
    """
    try:
        return psycopg2.connect(
            host=host,
# ... full runnable version includes tests & documentation