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```python
# AI Dev Tool: Cloudflare Worker Hono API Template with FastAPI and Pydantic v2
# Production Starter Boilerplate for Micro-SaaS Development

import os
import json
from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
from typing import List, Optional
from cloudflare import Worker, D1

# Initialize FastAPI App
app = FastAPI()

# Define Pydantic Models
class User(BaseModel):
    id: int
    name: str
    email: str

class Item(BaseModel):
    id: int
    name: str
    description: str
    price: float

# Initialize Cloudflare Worker and D1 Database
worker = Worker()
d1 = D1()

# Define Routes
@app.get("/users/")
async def read_users():
    """
    Read all users from D1 Database.
    
    Returns:
        List[User]: List of users.
    """
    try:
        users = d1.fetch("users")
        return [User(**user) for user in users]
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))

@app.get("/items/")
async def read_items():
    """
    Read all

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