fix: add blockchain-node.service to setup as it's required by RPC service

Blockchain Node Service Addition - Complete:
✅ BLOCKCHAIN NODE SERVICE ADDED: Added aitbc-blockchain-node.service to setup process
- setup.sh: Added blockchain-node.service to services installation list
- setup.sh: Updated start_services to include blockchain services
- setup.sh: Updated setup_autostart to enable blockchain services
- Reason: RPC service depends on blockchain node service

✅ DEPENDENCY ANALYSIS:
🔗 aitbc-blockchain-rpc.service: Has 'After=aitbc-blockchain-node.service'
📋 Dependency Chain: RPC service requires blockchain node to be running first
🎯 Core Functionality: Blockchain node is essential for AITBC operation
📁 App Directory: /opt/aitbc/apps/blockchain-node/ exists

✅ SERVICE INSTALLATION ORDER:
1. aitbc-wallet.service
2. aitbc-coordinator-api.service
3. aitbc-exchange-api.service
4. aitbc-blockchain-node.service (NEW)
5. aitbc-blockchain-rpc.service

✅ UPDATED FUNCTIONS:
📦 install_services(): Added aitbc-blockchain-node.service to services array
🚀 start_services(): Added blockchain services to systemctl start command
🔄 setup_autostart(): Added blockchain services to systemctl enable command
📋 Status Check: Added blockchain services to systemctl is-active check

✅ SERVICE STARTUP SEQUENCE:
🔧 Proper Order: Blockchain node starts before RPC service
🎯 Dependencies: RPC service waits for blockchain node to be ready
📊 Health Check: All services checked for active status
⚡ Auto-Start: All services enabled for boot-time startup

✅ TECHNICAL CORRECTNESS:
✅ Dependency Resolution: RPC service will wait for blockchain node
✅ Service Management: All blockchain services managed by systemd
✅ Startup Order: Correct sequence for dependent services
✅ Auto-Start: All services start automatically on boot

✅ COMPLETE BLOCKCHAIN STACK:
🔗 aitbc-blockchain-node.service: Core blockchain node
🔗 aitbc-blockchain-rpc.service: RPC API for blockchain
🔗 aitbc-wallet.service: Wallet service
🔗 aitbc-coordinator-api.service: Coordinator API
🔗 aitbc-exchange-api.service: Exchange API

RESULT: Successfully added blockchain-node.service to setup process, ensuring proper dependency chain and complete blockchain functionality. The RPC service will now work correctly with the blockchain node running as required.

setup.sh

@@ -162,6 +162,7 @@ install_services() {
         "aitbc-wallet.service"
         "aitbc-coordinator-api.service"
         "aitbc-exchange-api.service"
+        "aitbc-blockchain-node.service"
         "aitbc-blockchain-rpc.service"
     )
     
@@ -238,12 +239,12 @@ start_services() {
     log "Starting AITBC services..."
     
     # Try systemd first
-    if systemctl start aitbc-wallet aitbc-coordinator-api aitbc-exchange-api 2>/dev/null; then
+    if systemctl start aitbc-wallet aitbc-coordinator-api aitbc-exchange-api aitbc-blockchain-node aitbc-blockchain-rpc 2>/dev/null; then
         log "Services started via systemd"
         sleep 5
         
         # Check if services are running
-        if systemctl is-active --quiet aitbc-wallet aitbc-coordinator-api aitbc-exchange-api; then
+        if systemctl is-active --quiet aitbc-wallet aitbc-coordinator-api aitbc-exchange-api aitbc-blockchain-node aitbc-blockchain-rpc; then
             success "Services started successfully via systemd"
         else
             warning "Some systemd services failed, falling back to manual startup"
@@ -269,6 +270,7 @@ setup_autostart() {
     systemctl enable aitbc-wallet.service
     systemctl enable aitbc-coordinator-api.service
     systemctl enable aitbc-exchange-api.service
+    systemctl enable aitbc-blockchain-node.service
     systemctl enable aitbc-blockchain-rpc.service
     
     success "Auto-start configured"