⚡ Live Playground: AI Dev Tool: PostgreSQL Vector Search (y00e)

```python
# AI Dev Tool: Edge AI-Powered Search API with Cloudflare Workers and PostgreSQL Vector Search
# =================================================================================================
# This is a production-ready API integration wrapper for building AI-native SaaS applications.
# It leverages Cloudflare Workers, Hono, and PostgreSQL Vector Search to provide fast and accurate search functionality.

import os
import json
from typing import Dict, List
from pydantic import BaseModel
from hono import Hono
from cloudflare import WorkersKV
from psycopg2 import connect
from psycopg2.extras import DictCursor

# Define the search query request model
class SearchQuery(BaseModel):
    """Search query request model"""
    query: str
    limit: int = 10

# Define the search result response model
class SearchResult(BaseModel):
    """Search result response model"""
    id: int
    title: str
    content: str
    score: float

# Initialize the Cloudflare Workers KV store
kv = WorkersKV(namespace="search-index")

# Initialize the PostgreSQL database connection
db_conn = connect(
    host=os.environ["DB_HOST"],
    database=os.environ["DB_NAME"],
    user=os.environ["DB_USER"],
    password=os.environ["DB_PASSWORD"]
)

# Define the
⚡ Live Code Sandbox: AI Dev Tool: PostgreSQL Vector Search (y00e)
