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/05_send_transaction.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+# Transaction Sending Script for AITBC
+# This script sends 1000 AIT from genesis to aitbc wallet
+
+set -e  # Exit on any error
+
+echo "=== AITBC Transaction Sending ==="
+
+# Get wallet address (source from wallet creation script)
+if [ -z "$WALLET_ADDR" ]; then
+  echo "Error: WALLET_ADDR not set. Please run wallet creation script first."
+  exit 1
+fi
+
+echo "1. Sending 1000 AIT from genesis to aitbc wallet..."
+python /opt/aitbc/cli/simple_wallet.py send \
+  --from aitbc1genesis \
+  --to $WALLET_ADDR \
+  --amount 1000 \
+  --fee 10 \
+  --password-file /var/lib/aitbc/keystore/.password \
+  --rpc-url http://localhost:8006
+
+# Get transaction hash for verification (simplified - using RPC to check latest transaction)
+TX_HASH=$(curl -s http://localhost:8006/rpc/transactions --limit 1 | jq -r '.transactions[0].hash' 2>/dev/null || echo "Transaction hash retrieval failed")
+echo "Transaction hash: $TX_HASH"
+
+# Wait for transaction to be mined
+echo "2. Waiting for transaction to be mined..."
+for i in {1..10}; do
+  sleep 2
+  BALANCE=$(ssh aitbc "curl -s \"http://localhost:8006/rpc/getBalance/$WALLET_ADDR\" | jq .balance")
+  if [ "$BALANCE" -gt "0" ]; then
+    echo "Transaction mined! Balance: $BALANCE AIT"
+    break
+  fi
+  echo "Check $i/10: Balance = $BALANCE AIT"
+done
+
+# Final balance verification
+echo "3. Final balance verification..."
+ssh aitbc "curl -s \"http://localhost:8006/rpc/getBalance/$WALLET_ADDR\" | jq ."
+
+echo "✅ Transaction sent successfully!"
+echo "From: aitbc1genesis"
+echo "To: $WALLET_ADDR"
+echo "Amount: 1000 AIT"
+echo "Transaction hash: $TX_HASH"