initialize git, basic setup for crm

src/config/database.js

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+import { drizzle } from 'drizzle-orm/node-postgres';
+import pkg from 'pg';
+const { Pool } = pkg;
+import * as schema from '../db/schema.js';
+
+// PostgreSQL connection pool
+const pool = new Pool({
+  host: process.env.DB_HOST || 'localhost',
+  port: parseInt(process.env.DB_PORT || '5432'),
+  user: process.env.DB_USER || 'admin',
+  password: process.env.DB_PASSWORD || 'heslo123',
+  database: process.env.DB_NAME || 'crm',
+  max: 20, // maximum number of connections in pool
+  idleTimeoutMillis: 30000,
+  connectionTimeoutMillis: 2000,
+});
+
+// Test database connection
+pool.on('connect', () => {
+  console.log('✅ Database connected successfully');
+});
+
+pool.on('error', (err) => {
+  console.error('❌ Unexpected database error:', err);
+  process.exit(-1);
+});
+
+// Initialize Drizzle ORM with schema
+export const db = drizzle(pool, { schema });
+
+// Export pool for direct access if needed
+export { pool };