feat: Add media serving functionality with optional metadata stripping

libertas_api/src/services/media_service.rs

@@ -153,6 +153,20 @@ impl MediaService for MediaServiceImpl {
             .ok_or(CoreError::NotFound("Thumbnail for Media".to_string(), id))
     }
 
+    async fn get_media_for_serving(&self, id: Uuid, user_id: Option<Uuid>) -> CoreResult<Media> {
+        self.auth_service
+            .check_permission(user_id, authz::Permission::ViewMedia(id))
+            .await?;
+
+        let media = self
+            .repo
+            .find_by_id(id)
+            .await?
+            .ok_or(CoreError::NotFound("Media".to_string(), id))?;
+
+        Ok(media)
+    }
+
     async fn delete_media(&self, id: Uuid, user_id: Uuid) -> CoreResult<()> {
         self.auth_service
             .check_permission(Some(user_id), authz::Permission::DeleteMedia(id))