added initial integration tests with bun

libs/postgres-client/src/index.ts

@@ -0,0 +1,34 @@
+/**
+ * PostgreSQL Client Library for Stock Bot
+ * 
+ * Provides type-safe PostgreSQL access for operational data,
+ * transactions, and relational queries.
+ */
+
+export { PostgreSQLClient } from './client';
+export { PostgreSQLHealthMonitor } from './health';
+export { PostgreSQLTransactionManager } from './transactions';
+export { PostgreSQLQueryBuilder } from './query-builder';
+export { PostgreSQLMigrationManager } from './migrations';
+
+// Types
+export type {
+  PostgreSQLClientConfig,
+  PostgreSQLConnectionOptions,
+  PostgreSQLHealthStatus,
+  PostgreSQLMetrics,
+  QueryResult,
+  TransactionCallback,
+  SchemaNames,
+  TableNames,
+  Trade,
+  Order,
+  Position,
+  Portfolio,
+  Strategy,
+  RiskLimit,
+  AuditLog
+} from './types';
+
+// Utils
+export { createPostgreSQLClient, getPostgreSQLClient } from './factory';