feat: add pipeline orchestrator skeleton with startup checks, stage runners, shutdown handler, and report generation

data-pipeline/db/init.ts

@@ -33,7 +33,10 @@ async function main(): Promise<void> {
   await initDb();
 }
 
-main().catch((err) => {
-  console.error(err);
-  process.exit(1);
-});
+// after
+if (import.meta.url === `file://${process.argv[1]}`) {
+  main().catch((err) => {
+    console.error(err);
+    process.exit(1);
+  });
+}