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Smart Contract Proxy Patterns Guide

What is the AppStorage Pattern?

The AppStorage pattern uses a deterministic storage slot to organize contract data:

library AppStorage {
    bytes32 constant POSITION = keccak256("app.storage.v1");
 

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Your Neovim (`v0.11.2`) uses **Vim-Plug** with plugins in `~/.vim/plugged`: `coc.nvim` (LSP), `papercolor-theme` (theme), `fzf` (fuzzy finder), `tagbar` (code tags), `vim-go` (Go support, causing `noshellslash` error), `nerdtree` (file explorer), `vim-multiple-cursors` (multi-cursor editing), and `vim-solidity` (Solidity syntax). Config is in `~/.config/nvim/init.vim`, with settings for syntax, indentation, search, and `coc.nvim` mappings. No `~/.vimrc` or `init.lua`.

**To reset and reinstall** (avoiding `vim-go`):
```bash
cp -r ~/.config/nvim ~/.config/nvim.bak
rm -rf ~/.vim/plugged ~/.local/share/nvim ~/.cache/nvim ~/.config/nvim
curl -fLo ~/.local/share/nvim/site/autoload/plug.vim --create-dirs https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
mkdir -p ~/.config/nvim && nvim ~/.config/nvim/init.vim
# Paste: call plug#begin('~/.vim/plugged') | Plug 'preservim/nerdtree' | Plug 'junegunn/fzf', { 'do': { -> fzf#install() } } | Plug 'junegunn/fzf.vim' | Plug 'vim-airline/vim-airline' | Plug '

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# I have a accounts.json. with [{account:"0xaddress_public_key",private_key:"0xprivate_key"},]
# this creates the info I need to put on cdk-erigon to add balance to the accounts I want to simulate.
import json

# Load accounts data from JSON file
with open('accounts.json', 'r') as f:
    data = json.load(f)

# Create a dictionary to store the new formatted data
formatted_data = {}

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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import "@openzeppelin/contracts/proxy/Clones.sol";
import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";

/// @title MultiFactory Contract for creating clones of multiple implementations
/// @dev Extends AccessControl and Initializable from OpenZeppelin
contract MultiFactory is AccessControl, Initializable {