first commit

types.ts

@@ -18,6 +18,7 @@ export interface Lesson {
   title: string;
   duration: string;
   videoUrl: string;
+  mediaProvider?: string;
   isFree: boolean; // true = Public, false = Pro (Login required)
   description?: string;
   attachments?: Attachment[]; // Lesson-specific downloadable materials
@@ -63,4 +64,4 @@ export interface Comment {
   date: string;
   reply?: string; // Professor's reply
   replyDate?: string;
-}
+}