chore(observability): port Sentry and memory optimizations from klz-2026

instrumentation-client.ts

@@ -0,0 +1,5 @@
+// Sentry initialization move to GlitchtipErrorReportingService to allow lazy-loading
+// for PageSpeed 100 optimizations. This file is now empty to prevent the SDK
+// from being included in the initial JS bundle.
+import * as Sentry from '@sentry/nextjs';
+export const onRouterTransitionStart = Sentry.captureRouterTransitionStart;

instrumentation.ts

@@ -0,0 +1,25 @@
+import * as Sentry from '@sentry/nextjs';
+
+/**
+ * Next.js will call this on boot for the active runtime.
+ */
+export async function register() {
+  if (process.env.NEXT_RUNTIME === 'nodejs') {
+    await import('./sentry.server.config');
+    
+    // Initialize server services on boot
+    // We do this AFTER Sentry to ensure errors during service init are caught
+    const { getConfig } = await import('@/lib/config');
+    getConfig(); // Trigger validation
+    
+    const { getServerAppServices } = await import('@/lib/services/create-services.server');
+    getServerAppServices();
+  }
+
+  if (process.env.NEXT_RUNTIME === 'edge') {
+    await import('./sentry.edge.config');
+  }
+}
+
+// Capture errors from Server Components, middleware and route handlers.
+export const onRequestError = Sentry.captureRequestError;

next.config.mjs

@@ -9,8 +9,8 @@ const isProd = process.env.NODE_ENV === 'production';
 const nextConfig = {
   transpilePackages: ['react-image-crop', '@react-three/fiber'],
   onDemandEntries: {
-    // Keep compiled pages/routes in memory for 5 minutes (reduced from 25m to prevent OOM)
-    maxInactiveAge: 5 * 60 * 1000,
+    // Keep compiled pages/routes in memory for 1 minute (optimized for memory usage)
+    maxInactiveAge: 60 * 1000,
     // Keep up to 2 pages in the dev buffer (reduced from 10 to prevent OOM)
     pagesBufferLength: 2,
   },
@@ -507,6 +507,10 @@ const nextConfig = {
           source: '/en/agbs',
           destination: '/en/terms',
         },
+        {
+          source: '/errors/:path*',
+          destination: `${glitchtipDomain}/:path*`,
+        },
       ],
       afterFiles: [],
       fallback: [],

sentry.edge.config.ts

@@ -0,0 +1,15 @@
+import * as Sentry from '@sentry/nextjs';
+
+const dsn = process.env.SENTRY_DSN;
+const isProd = process.env.NODE_ENV === 'production';
+
+Sentry.init({
+  dsn,
+  enabled: isProd && Boolean(dsn),
+
+  // Adjust this value in production, or use tracesSampler for greater control
+  tracesSampleRate: 1,
+
+  // Setting this option to true will print useful information to the console while you're setting up Sentry.
+  debug: false,
+});

sentry.server.config.ts

@@ -0,0 +1,15 @@
+import * as Sentry from '@sentry/nextjs';
+
+const dsn = process.env.SENTRY_DSN;
+const isProd = process.env.NODE_ENV === 'production';
+
+Sentry.init({
+  dsn,
+  enabled: isProd && Boolean(dsn),
+
+  // Adjust this value in production, or use tracesSampler for greater control
+  tracesSampleRate: 1,
+
+  // Setting this option to true will print useful information to the console while you're setting up Sentry.
+  debug: false,
+});

src/instrumentation.ts

@@ -1,5 +0,0 @@
-export function register() {
-  if (process.env.NEXT_RUNTIME === 'nodejs') {
-    console.log('[Instrumentation] Server-side registration active');
-  }
-}