feat: add daily vani

lib/vani.ts

@@ -0,0 +1,33 @@
+/**
+ * Client for "Vāṇī of the Day" — the home page's daily content pick.
+ *
+ * Public endpoint (no auth): the BFF returns the same pick to everyone for the
+ * current day, chosen from a prose chapter, verse, or transcript and not
+ * repeated within 90 days.
+ */
+
+const BFF_BASE = process.env.NEXT_PUBLIC_BFF_URL || "http://localhost:8080";
+
+export type Vani = {
+  kind: "verse" | "prose" | "transcript";
+  label: string; // "Verse" | "Chapter" | "Lecture" | "Conversation"
+  title: string;
+  subtitle: string;
+  href: string;
+  book_title?: string;
+};
+
+type Envelope<T> = { success?: boolean; data?: T };
+
+export async function getVaniOfTheDay(): Promise<Vani | null> {
+  try {
+    const res = await fetch(`${BFF_BASE}/api/v1/vani/today`, {
+      headers: { Accept: "application/json" },
+    });
+    if (!res.ok) return null;
+    const body = (await res.json().catch(() => ({}))) as Envelope<Vani | null>;
+    return body.data ?? null;
+  } catch {
+    return null;
+  }
+}