fix: fix duplicate imports, type mismatch, and missing Read trait

src/modes/save.rs

@@ -1,7 +1,6 @@
 use anyhow::{anyhow, Context, Result};
 use std::collections::HashMap;
 use std::io::{self, Read};
-use is_terminal::IsTerminal;
 use std::path::PathBuf;
 use is_terminal::IsTerminal;
 use std::str::FromStr;