changeset: switch to patch

since we're now testing that it works with all major versions of Vite that
we support

Author: pcattori

.changeset/dull-moons-share.md

@@ -1,5 +1,24 @@
 ---
-"@react-router/dev": major
+"@react-router/dev": patch
 ---
 
-Load vite env variables before reading routes.ts
+Load environment variables before evaluating `routes.ts`
+
+For example, you can now compute your routes based on [`VITE_`-prefixed environment variables](https://vite.dev/guide/env-and-mode#env-variables):
+
+```txt
+# .env
+VITE_ENV_ROUTE=my-route
+```
+
+```ts
+// app/routes.ts
+import { type RouteConfig, route } from "@react-router/dev/routes";
+
+const routes: RouteConfig = [];
+if (import.meta.env.VITE_ENV_ROUTE === "my-route") {
+  routes.push(route("my-route", "routes/my-route.tsx"));
+}
+
+export default routes;
+```