chore: seminarhof customer project

apps/app/src/lib/env.ts

@@ -0,0 +1,24 @@
+// Endpoints come from env, never hardcoded.
+//
+// In local dev VITE_API_URL is set at build time and Vite replaces the
+// import.meta.env reference inline. In deployed/sandbox bundles VITE_API_URL is
+// a runtime Worker binding — invisible to Vite at build time — so it's undefined
+// in the bundle. We fall back to the current origin + /api, which is correct
+// because the dispatcher routes every /api/* path to the API on the same host.
+export function apiUrl(): string {
+  if (typeof window !== 'undefined' && (window as any).__E2E_API_URL) {
+    // E2E talks directly to the backend (no vite proxy). Better Auth is mounted
+    // at /api/auth there, while pikku routes live at the root — so the auth
+    // client must add the /api prefix that __E2E_API_URL (bare host) lacks.
+    return `${(window as any).__E2E_API_URL as string}/api`
+  }
+  if (import.meta.env.SSR) {
+    // SSR context: the auth client is only consumed in the browser. Return the
+    // build-time var when available or a placeholder so SSR never throws.
+    return import.meta.env.VITE_API_URL ?? '/__api'
+  }
+  // Client: build-time var (local dev) or derive from the current origin.
+  // Better Auth's client requires an absolute base URL, so never return a bare
+  // relative '/api' here — '/api/auth' throws "Invalid base URL".
+  return import.meta.env.VITE_API_URL ?? `${window.location.origin}/api`
+}