feat: add media file retrieval functionality and update dependencies

libertas_api/src/services/media_service.rs

@@ -124,4 +124,18 @@ impl MediaService for MediaServiceImpl {
     async fn list_user_media(&self, user_id: Uuid) -> CoreResult<Vec<Media>> {
         self.repo.list_by_user(user_id).await
     }
+
+    async fn get_media_filepath(&self, id: Uuid, user_id: Uuid) -> CoreResult<String> {
+        let media = self
+            .repo
+            .find_by_id(id)
+            .await?
+            .ok_or(CoreError::NotFound("Media".to_string(), id))?;
+
+        if media.owner_id != user_id {
+            return Err(CoreError::Auth("Access denied".to_string()));
+        }
+
+        Ok(media.storage_path)
+    }
 }