fix: build, typecheck, eslint

lib/config.ts

@@ -35,11 +35,11 @@ function createConfig() {
 
     errors: {
       glitchtip: {
-        // Use SENTRY_DSN for both server and client (proxied)
         dsn: env.SENTRY_DSN,
-        // The proxied origin used in the frontend
         proxyPath: '/errors',
-        enabled: Boolean(env.SENTRY_DSN),
+        // On the client, we always enable it (it uses the tunnel / proxy defined in sentry.client.config.ts)
+        // On the server, we only enable it if the DSN is provided.
+        enabled: typeof window !== 'undefined' || Boolean(env.SENTRY_DSN),
       },
     },