fix: verify TanStack SSR with Vite+ preview #2617

.npmrc

@@ -0,0 +1 @@
+registry=https://registry-bridge.viteplus.dev/

README.md

@@ -1,5 +1,37 @@
 Welcome to your new TanStack Start app!
 
+# Vite+ SSR fix preview
+
+This branch uses the [preview build from Vite+ PR #2617](https://github.com/voidzero-dev/vite-plus/pull/2617#issuecomment-5560311220).
+`vite-plus`, the `vite` alias, and the `vite` override use the same commit version,
+`0.0.0-commit.15cc57f55e221b26ca82e7475ce90d22af8b5cd0`.
+The `.npmrc` file selects the registry that serves this preview.
+
+The original lockfile installs Vite+ `0.1.18`, which returns HTTP 404 for both `/` and `/about`.
+With the preview, both routes return HTTP 200 and include their page content in the server response.
+The application dependencies, including TanStack Start, retain their original locked versions.
+The old `@voidzero-dev/vite-plus-test` alias is removed because the preview provides tests through `vite-plus/test`.
+
+`vp test` starts a development server and checks the HTTP status and server-rendered content of both routes.
+GitHub Actions runs a frozen install, this test, and the production build on Linux, macOS, and Windows for each pull request.
+Compare [the baseline PR](https://github.com/why-reproductions-are-required/vite-plus-tanstack-start-ssr-broken/pull/2)
+with [the preview fix](https://github.com/why-reproductions-are-required/vite-plus-tanstack-start-ssr-broken/pull/1).
+Both use the same workflow and SSR test; the baseline keeps the original dependencies.
+
+Install the locked dependencies and start the server:
+
+```bash
+vp install --frozen-lockfile
+vp dev --host 127.0.0.1 --port 3000
+```
+
+In another terminal, check the server-rendered content:
+
+```bash
+curl --fail --silent http://127.0.0.1:3000/ | grep -F 'Start simple, ship quickly.'
+curl --fail --silent http://127.0.0.1:3000/about | grep -F 'A small starter with room to grow.'
+```
+
 # Getting Started
 
 To run this application: