[EXPERIMENTAL] [DO NOT MERGE] chore: ID-3997: Passport Wallet Migration to Biconomy Nexus

[rodrigo-fournier-immutable]

Overview

This PR implements a hybrid smart wallet infrastructure that combines Passport's proven Factory and MultiCallDeploy contracts with Biconomy's Nexus core implementation, creating a unified deployment system that leverages the best of both architectures.

Key Changes

🏗️ Infrastructure Integration

• Passport Base: Uses existing Factory.sol and MultiCallDeploy.sol for reliable wallet deployment and batch execution
• Nexus Core: Integrates Nexus.sol implementation with K1Validator for ERC-4337 and ERC-7579 compliance
• Hybrid Architecture: 6-step deployment process that creates a complete smart account infrastructure

📦 Dependency Management

• account-abstraction: Added proper NPM integration for ERC-4337 interfaces
• Solidity Version: Standardized to 0.8.27 across all contracts

🚀 Deployment Scripts

• Step-by-step deployment: Scripts for deploying infrastructure components (steps 0-6)
• Wallet deployment: Support for both Factory and MultiCallDeploy methods with automatic fallback
• CREATE2 Support: Deterministic address deployment with proper error handling
• Unified Script: Single deploy-infrastructure-and-wallet.js for complete deployment

Architecture

Passport (Base) + Nexus (Core) = Hybrid Smart Wallet
├── Factory.sol (Passport) → Deploys wallets using Nexus implementation
├── MultiCallDeploy.sol (Passport) → Batch deployment + execution
├── Nexus.sol (Biconomy) → Core smart account logic
├── K1Validator.sol (Biconomy) → ECDSA signature validation
└── Supporting contracts → ImmutableSigner, LatestWalletImplLocator, etc.