refactoring to remove a lot of junk

apps/data-pipeline/src/clients.ts

@@ -0,0 +1,27 @@
+import { PostgreSQLClient } from '@stock-bot/postgres';
+import { MongoDBClient } from '@stock-bot/mongodb';
+
+let postgresClient: PostgreSQLClient | null = null;
+let mongodbClient: MongoDBClient | null = null;
+
+export function setPostgreSQLClient(client: PostgreSQLClient): void {
+  postgresClient = client;
+}
+
+export function getPostgreSQLClient(): PostgreSQLClient {
+  if (!postgresClient) {
+    throw new Error('PostgreSQL client not initialized. Call setPostgreSQLClient first.');
+  }
+  return postgresClient;
+}
+
+export function setMongoDBClient(client: MongoDBClient): void {
+  mongodbClient = client;
+}
+
+export function getMongoDBClient(): MongoDBClient {
+  if (!mongodbClient) {
+    throw new Error('MongoDB client not initialized. Call setMongoDBClient first.');
+  }
+  return mongodbClient;
+}