feat: add transcriptions collection

lib/og.ts

@@ -84,6 +84,8 @@ const CONTENT_TYPE_DESCRIPTIONS: Record<string, string> = {
     "Back to Godhead — the magazine founded by Śrīla Prabhupāda in 1944 to present the timeless science of Kṛṣṇa consciousness.",
   "other-documents":
     "Writings and analyses by His Divine Grace A.C. Bhaktivedanta Swami Prabhupāda.",
+  transcriptions:
+    "Transcriptions of Śrīla Prabhupāda's lectures, morning walks, room conversations, and dialogues — the living voice of the Founder-Ācārya preserved in text.",
 };
 
 function getFallbackQuote(title: string, code?: string): string {
@@ -263,6 +265,24 @@ export function ogForOtherDocument(docTitle: string, chapterTitle?: string) {
   });
 }
 
+/** OG metadata for a transcription. */
+export function ogForTranscription(name: string, meta?: string) {
+  return buildOgMeta({
+    title: name,
+    detail: meta || undefined,
+    quote: CONTENT_TYPE_DESCRIPTIONS.transcriptions,
+  });
+}
+
+/** OG metadata for the transcriptions index. */
+export function ogForTranscriptions() {
+  return buildOgMeta({
+    title: "Transcriptions",
+    detail: "Lectures & conversations",
+    quote: CONTENT_TYPE_DESCRIPTIONS.transcriptions,
+  });
+}
+
 /** OG metadata for the disciples directory. */
 export function ogForDisciples() {
   return buildOgMeta({