fix: Trim server ignoreSpans to only patterns that produce transactions

Only /node_modules/, /@id/, /@react-refresh/, and /@vite/ actually
generate server-side http.server transactions in a real browser session.
The rest (favicon.ico, /@tanstack-start/, /@fs/) are handled by Vite
before reaching Node.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: nicohrubec

packages/tanstackstart-react/src/server/sdk.ts

@@ -16,11 +16,8 @@ export function init(options: NodeOptions): NodeClient | undefined {
   sentryOptions.ignoreSpans = [
     ...(sentryOptions.ignoreSpans || []),
     /\/node_modules\//,
-    /\/favicon\.ico/,
     /\/@id\//,
     /\/@react-refresh/,
-    /\/@tanstack-start\//,
-    /\/@fs\//,
     /\/@vite\//,
   ];
 

packages/tanstackstart-react/test/server/sdk.test.ts

@@ -44,15 +44,7 @@ describe('TanStack Start React Server SDK', () => {
 
       expect(nodeInit).toHaveBeenCalledWith(
         expect.objectContaining({
-          ignoreSpans: expect.arrayContaining([
-            /\/node_modules\//,
-            /\/favicon\.ico/,
-            /\/@id\//,
-            /\/@react-refresh/,
-            /\/@tanstack-start\//,
-            /\/@fs\//,
-            /\/@vite\//,
-          ]),
+          ignoreSpans: expect.arrayContaining([/\/node_modules\//, /\/@id\//, /\/@react-refresh/, /\/@vite\//]),
         }),
       );
     });