refactor: rename variable to clarify digest metadata purpose

src/modes/save.rs

@@ -175,12 +175,12 @@ pub fn mode_save(
 
     // Save digest to meta
     let digest_meta_name = get_digest_type_meta(digest_type);
-    let meta = db::Meta {
+    let digest_meta = db::Meta {
         id: item.id.unwrap(),
         name: digest_meta_name,
         value: digest,
     };
-    db::store_meta(conn, meta)?;
+    db::store_meta(conn, digest_meta)?;
 
     Ok(())
 }