Add full monorepo: virtual-banker, backend, frontend, docs, scripts, deployment

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/start-backend-final.sh

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+#!/bin/bash
+
+# Start Backend API Server - Final Version
+# This script properly builds and starts the backend server
+
+set -euo pipefail
+
+cd "$(dirname "$0")/.."
+
+# Default configuration
+export CHAIN_ID="${CHAIN_ID:-138}"
+export PORT="${PORT:-8080}"
+export DB_HOST="${DB_HOST:-localhost}"
+export DB_PORT="${DB_PORT:-5432}"
+export DB_USER="${DB_USER:-explorer}"
+export DB_PASSWORD="${DB_PASSWORD:-changeme}"
+export DB_NAME="${DB_NAME:-explorer}"
+export DB_SSLMODE="${DB_SSLMODE:-disable}"
+
+echo "=========================================="
+echo "Explorer Backend API Server"
+echo "=========================================="
+echo ""
+echo "Configuration:"
+echo "  Chain ID: $CHAIN_ID"
+echo "  Port: $PORT"
+echo "  Database: $DB_USER@$DB_HOST:$DB_PORT/$DB_NAME"
+echo ""
+
+# Check if Go is installed
+if ! command -v go &> /dev/null; then
+    echo "❌ Error: Go is not installed"
+    exit 1
+fi
+
+# Check if port is available
+if lsof -Pi :$PORT -sTCP:LISTEN -t >/dev/null 2>&1 ; then
+    echo "⚠️  Port $PORT is already in use"
+    echo "To stop existing process: kill \$(lsof -t -i:$PORT)"
+    exit 1
+fi
+
+# Change to backend directory
+cd backend/api/rest/cmd
+
+# Build the server
+echo "Building backend server..."
+if go build -o api-server main.go 2>&1; then
+    echo "✅ Build successful"
+else
+    echo "❌ Build failed"
+    exit 1
+fi
+
+# Start the server
+echo ""
+echo "Starting server on port $PORT..."
+echo "Press Ctrl+C to stop"
+echo ""
+exec ./api-server
+