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/01_preflight_setup.sh

@@ -0,0 +1,54 @@
+#!/bin/bash
+# Pre-Flight Setup Script for AITBC Multi-Node Blockchain
+# This script prepares the system for multi-node blockchain deployment
+
+set -e  # Exit on any error
+
+echo "=== AITBC Multi-Node Blockchain Pre-Flight Setup ==="
+
+# 1. Stop existing services
+echo "1. Stopping existing services..."
+systemctl stop aitbc-blockchain-* 2>/dev/null || true
+
+# 2. Update ALL systemd configurations (main files + drop-ins + overrides)
+echo "2. Updating systemd configurations..."
+# Update main service files
+sed -i 's|EnvironmentFile=/opt/aitbc/.env|EnvironmentFile=/etc/aitbc/.env|g' /opt/aitbc/systemd/aitbc-blockchain-*.service
+# Update drop-in configs
+find /etc/systemd/system/aitbc-blockchain-*.service.d/ -name "10-central-env.conf" -exec sed -i 's|EnvironmentFile=/opt/aitbc/.env|EnvironmentFile=/etc/aitbc/.env|g' {} \; 2>/dev/null || true
+# Fix override configs (wrong venv paths)
+find /etc/systemd/system/aitbc-blockchain-*.service.d/ -name "override.conf" -exec sed -i 's|/opt/aitbc/apps/blockchain-node/.venv/bin/python3|/opt/aitbc/venv/bin/python3|g' {} \; 2>/dev/null || true
+systemctl daemon-reload
+
+# 3. Create central configuration file
+echo "3. Setting up central configuration file..."
+cp /opt/aitbc/.env /etc/aitbc/.env.backup 2>/dev/null || true
+# Ensure .env is in the correct location (already should be)
+mv /opt/aitbc/.env /etc/aitbc/.env 2>/dev/null || true
+
+# 4. Setup AITBC CLI tool
+echo "4. Setting up AITBC CLI tool..."
+# Use central virtual environment (dependencies already installed)
+source /opt/aitbc/venv/bin/activate
+pip install -e /opt/aitbc/cli/ 2>/dev/null || true
+echo 'alias aitbc="source /opt/aitbc/venv/bin/activate && aitbc"' >> ~/.bashrc
+source ~/.bashrc
+
+# 5. Clean old data (optional but recommended)
+echo "5. Cleaning old data..."
+rm -rf /var/lib/aitbc/data/ait-mainnet/*
+rm -rf /var/lib/aitbc/keystore/*
+
+# 6. Create keystore password file
+echo "6. Creating keystore password file..."
+mkdir -p /var/lib/aitbc/keystore
+echo 'aitbc123' > /var/lib/aitbc/keystore/.password
+chmod 600 /var/lib/aitbc/keystore/.password
+
+# 7. Verify setup
+echo "7. Verifying setup..."
+aitbc --help 2>/dev/null || echo "CLI available but limited commands"
+ls -la /etc/aitbc/.env
+
+echo "✅ Pre-flight setup completed successfully!"
+echo "System is ready for multi-node blockchain deployment."