```

chore: refactor logging module, update genesis timestamp, remove model relationships, and reorganize routers

- Rename logging.py to logger.py and update import paths in poa.py and main.py
- Update devnet genesis timestamp to 1766828620
- Remove SQLModel Relationship declarations from Block, Transaction, and Receipt models
- Add SessionDep type alias and get_session dependency in coordinator-api deps
- Reorganize coordinator-api routers: replace explorer/registry with exchange, users, marketplace

deploy-explorer.sh

@@ -0,0 +1,66 @@
+#!/bin/bash
+
+# Deploy AITBC Explorer to the server
+
+set -e
+
+SERVER="root@10.1.223.93"
+EXPLORER_DIR="/root/aitbc/apps/explorer-web"
+NGINX_CONFIG="/etc/nginx/sites-available/aitbc"
+
+echo "🚀 Deploying AITBC Explorer to Server"
+echo "====================================="
+echo "Server: $SERVER"
+echo ""
+
+# Colors
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m'
+
+print_status() {
+    echo -e "${GREEN}[INFO]${NC} $1"
+}
+
+print_warning() {
+    echo -e "${YELLOW}[WARN]${NC} $1"
+}
+
+# Build the explorer locally first
+print_status "Building explorer locally..."
+cd /home/oib/windsurf/aitbc/apps/explorer-web
+npm run build
+
+# Copy built files to server
+print_status "Copying explorer build to server..."
+scp -r dist $SERVER:$EXPLORER_DIR/
+
+# Update nginx config to include explorer
+print_status "Updating nginx configuration..."
+
+# Backup current config
+ssh $SERVER "cp $NGINX_CONFIG ${NGINX_CONFIG}.backup"
+
+# Add explorer location to nginx config
+ssh $SERVER "sed -i '/# Health endpoint/i\\
+    # Explorer\\
+    location /explorer/ {\\
+        alias /root/aitbc/apps/explorer-web/dist/;\\
+        try_files \$uri \$uri/ /explorer/index.html;\\
+    }\\
+\\
+    # Explorer mock data\\
+    location /explorer/mock/ {\\
+        alias /root/aitbc/apps/explorer-web/public/mock/;\\
+    }\\
+' $NGINX_CONFIG"
+
+# Test and reload nginx
+print_status "Testing and reloading nginx..."
+ssh $SERVER "nginx -t && systemctl reload nginx"
+
+print_status "✅ Explorer deployment complete!"
+echo ""
+echo "📋 Explorer URL:"
+echo "  🌐 Explorer: https://aitbc.bubuit.net/explorer/"
+echo ""