fix(cli): detect vinxi-based frameworks (@tanstack/start, SolidStart, ...) (#6330)

* fix(cli): detect vinxi-based frameworks

* chore: add changeset

---------

Co-authored-by: shadcn <m@shadcn.com>

Author: KitsuneDev

.changeset/gold-jobs-notice.md

@@ -0,0 +1,5 @@
+---
+"shadcn": minor
+---
+
+add support for vinxi based framework

packages/shadcn/src/utils/get-project-info.ts

@@ -146,6 +146,20 @@ export async function getProjectInfo(cwd: string): Promise<ProjectInfo | null> {
     return type
   }
 
+  // Vinxi-based (such as @tanstack/start and @solidjs/solid-start)
+  // They are vite-based, and the same configurations used for Vite should work flawlessly
+  const appConfig = configFiles.find((file) => file.startsWith("app.config"))
+  if (appConfig?.length) {
+    const appConfigContents = await fs.readFile(
+      path.resolve(cwd, appConfig),
+      "utf8"
+    )
+    if (appConfigContents.includes("defineConfig")) {
+      type.framework = FRAMEWORKS["vite"]
+      return type
+    }
+  }
+
   // Expo.
   if (packageJson?.dependencies?.expo) {
     type.framework = FRAMEWORKS["expo"]