added new exchanges system

database/postgres/init/01-init-database.sql

@@ -0,0 +1,13 @@
+-- Initialize main database and user
+-- This runs first when PostgreSQL container starts
+
+-- Create main database if it doesn't exist
+SELECT 'CREATE DATABASE trading_bot'
+WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = 'trading_bot')\gexec
+
+-- Connect to the trading_bot database
+\c trading_bot;
+
+-- Create extensions we'll need
+CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
+CREATE EXTENSION IF NOT EXISTS "pg_trgm"; -- For fuzzy string matching