AI Dev Tool: PostgreSQL Vector Search Extension

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Preview Code

```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate with Hono Cloudflare Workers D1 Starter
# =================================================================================================
# This is a production-ready developer code asset for building high-performance Micro-SaaS applications
# using FastAPI, Pydantic v2, and Hono Cloudflare Workers D1 Starter.

from fastapi import FastAPI, Depends, HTTPException
from fastapi.responses import JSONResponse
from pydantic import BaseModel, Field
from hono import Hono
from cloudflare import WorkersKV
import os
import json

# Initialize FastAPI application
app = FastAPI()

# Initialize Hono Cloudflare Workers D1 Starter
hono = Hono()

# Initialize Cloudflare Workers KV store
kv = WorkersKV(namespace="MY_NAMESPACE")

# Define Pydantic model for user data
class User(BaseModel):
# ... full runnable version includes tests & documentation