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```python
# AI Dev Tool: Cloudflare Worker Hono API Template with PostgreSQL Vector Search
# ==================================================================================
# This is a production-ready starter boilerplate for building scalable and secure APIs
# using Cloudflare Workers, Hono, and PostgreSQL Vector Search.

import os
import json
from typing import Dict, List
from hono import Hono
from cloudflare import Worker
from psycopg import connect
from psycopg.types import JSON

# Initialize Hono API
hono = Hono()

# Initialize Cloudflare Worker
worker = Worker()

# Initialize PostgreSQL connection
conn = connect(
    host="localhost",
    database="mydatabase",
    user="myuser",
    password="mypassword"
)

# Define a function to handle vector search queries
def vector_search(query: str, limit: int = 10) -> List[Dict]:
    """
    Perform a vector search query using PostgreSQL Vector Search extension.

Args:
    - query (str): The search query.
    - limit (int): The maximum number of results to return. Defaults to 10.

Returns:
    - List[Dict]: A list of search results, where each result is a dictionary containing
      the document ID, score, and other relevant metadata.

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