refactor: update route handling and improve observability

- Changed the condition for Sentry integration in reportRouteNotFound to check for SSR using import.meta.env.SSR.
- Refactored the health route to utilize createFileRoute for better structure and response handling.
- Updated BillingSuccessRedirect imports to reflect new feature organization, removing the old shared route file.

Author: regenrek

…routes/shared/BillingSuccessRedirect.tsx …tures/billing/BillingSuccessRedirect.tsxsrc/routes/shared/BillingSuccessRedirect.tsx renamed to src/features/billing/BillingSuccessRedirect.tsx src/routes/shared/BillingSuccessRedirect.tsx renamed to src/features/billing/BillingSuccessRedirect.tsx

@@ -12,7 +12,7 @@ export async function reportRouteNotFound(meta: NotFoundMetadata) {
       href: meta.href ?? null,
     };
 
-    if (typeof window === 'undefined') {
+    if (import.meta.env.SSR) {
       const { Sentry } = await import('./sentry.server');
       if (Sentry?.captureMessage) {
         Sentry.captureMessage('Router 404', (scope) => {

src/lib/observability/report-not-found.ts

@@ -1,6 +1,6 @@
 import { createFileRoute } from '@tanstack/react-router';
 
-import { BillingSuccessRedirect } from '~/routes/shared/BillingSuccessRedirect';
+import { BillingSuccessRedirect } from '~/features/billing/BillingSuccessRedirect';
 
 export const Route = createFileRoute('/billing/success')({
   component: BillingSuccessRedirect,

src/routes/billing/success/route.tsx

@@ -1,6 +1,6 @@
 import { createFileRoute } from '@tanstack/react-router';
 
-import { BillingSuccessRedirect } from '~/routes/shared/BillingSuccessRedirect';
+import { BillingSuccessRedirect } from '~/features/billing/BillingSuccessRedirect';
 
 export const Route = createFileRoute('/dashboard/billing/success')({
   component: BillingSuccessRedirect,

src/routes/dashboard/billing/success/route.tsx

@@ -1,13 +1,20 @@
-/**
- * Minimal healthcheck endpoint for Dokku.
- * Responds with 200 and a small JSON body.
- */
-export async function GET() {
-  return new Response(JSON.stringify({ status: 'ok' }), {
-    headers: { 'content-type': 'application/json; charset=utf-8' },
-    status: 200,
-  });
-}
+import { createFileRoute } from '@tanstack/react-router';
 
-// Optional: treat HEAD like GET (fast path for some checkers)
-export const HEAD = GET;
+const jsonOk = () =>
+  Response.json(
+    { status: 'ok' },
+    {
+      headers: { 'content-type': 'application/json; charset=utf-8' },
+      status: 200,
+    },
+  );
+
+export const Route = createFileRoute('/health')({
+  component: () => null,
+  server: {
+    handlers: {
+      GET: jsonOk,
+      HEAD: () => new Response(null, { status: 200 }),
+    },
+  },
+});