refactor: extract script snippets to reusable scripts

- Create modular scripts for multi-node blockchain setup
- Extract 6 core setup scripts from workflow documentation
- Add master orchestrator script for complete setup
- Replace inline code with script references in workflow
- Create comprehensive README for script documentation
- Copy scripts to aitbc for cross-node execution
- Improve maintainability and reusability of setup process

Scripts created:
- 01_preflight_setup.sh - System preparation
- 02_genesis_authority_setup.sh - Genesis node setup
- 03_follower_node_setup.sh - Follower node setup
- 04_create_wallet.sh - Wallet creation
- 05_send_transaction.sh - Transaction sending
- 06_final_verification.sh - System verification
- setup_multinode_blockchain.sh - Master orchestrator

This makes the workflow cleaner and scripts reusable
while maintaining all functionality.

scripts/workflow/04_create_wallet.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+# Wallet Creation Script for AITBC
+# This script creates a new wallet on the aitbc follower node
+
+set -e  # Exit on any error
+
+echo "=== AITBC Wallet Creation ==="
+
+# On aitbc, create a new wallet using AITBC simple wallet CLI
+echo "1. Creating new wallet on aitbc..."
+ssh aitbc 'python /opt/aitbc/cli/simple_wallet.py create --name aitbc-user --password-file /var/lib/aitbc/keystore/.password'
+
+# Note the new wallet address
+WALLET_ADDR=$(ssh aitbc 'cat /var/lib/aitbc/keystore/aitbc-user.json | jq -r .address')
+echo "New wallet: $WALLET_ADDR"
+
+# Verify wallet was created successfully
+echo "2. Verifying wallet creation..."
+ssh aitbc "python /opt/aitbc/cli/simple_wallet.py list --format json | jq '.[] | select(.name == \"aitbc-user\")'"
+
+echo "✅ Wallet created successfully!"
+echo "Wallet name: aitbc-user"
+echo "Wallet address: $WALLET_ADDR"
+echo "Wallet is ready to receive AIT coins."