fix(settings, yjs, ux, ci): default settings, y-leveldb restart resilience, dashboard one-click open, delete error handling, Playwright CI

backend/src/index.ts

@@ -25,16 +25,15 @@ async function main() {
   }
 
   // Graceful shutdown
-  process.on('SIGTERM', async () => {
+  const shutdown = async (signal: string) => {
+    console.log(`Received ${signal}, shutting down gracefully...`);
     await fastify.close();
+    await closeYjsPersistence();
     db.close();
     process.exit(0);
-  });
-  process.on('SIGINT', async () => {
-    await fastify.close();
-    db.close();
-    process.exit(0);
-  });
+  };
+  process.on('SIGTERM', () => shutdown('SIGTERM'));
+  process.on('SIGINT', () => shutdown('SIGINT'));
 }
 
 main();