chore: kanban template

apps/kanban/src/lib/env.ts

@@ -0,0 +1,17 @@
+// Endpoints come from env, never hardcoded. Throws on a missing var rather than
+// falling back to a localhost default, so a misconfigured deploy fails loudly.
+//
+// SSR (workerd inside the sandbox container) can't reach the external host port
+// that VITE_API_URL points to. VITE_SERVER_API_URL holds the internal Caddy
+// address (http://127.0.0.1:8080/api) and is set by generate-frontend-runtime.mjs
+// for local sandbox mode. In deployed/hosted contexts VITE_SERVER_API_URL is
+// unset and we fall back to VITE_API_URL, which is correct there.
+export function apiUrl(): string {
+  const url = import.meta.env.SSR
+    ? (import.meta.env.VITE_SERVER_API_URL ?? import.meta.env.VITE_API_URL)
+    : import.meta.env.VITE_API_URL
+  if (!url) {
+    throw new Error('VITE_API_URL is not set — point it at the Pikku API base URL')
+  }
+  return url
+}