fix: add missing imports and remove unused ones

src/main.rs

@@ -2,7 +2,6 @@ use nix::fcntl::FdFlag;
 use nix::unistd::{close, pipe};
 use nix::Error as NixError;
 use std::collections::HashMap;
-use std::io;
 use std::os::fd::FromRawFd;
 use std::path::PathBuf;
 use std::process::Stdio; // For Stdio::null, Stdio::piped
@@ -10,7 +9,6 @@ use std::process::Stdio; // For Stdio::null, Stdio::piped
 use anyhow::{anyhow, Context, Error, Result};
 use clap::error::ErrorKind;
 use clap::*;
-use gethostname::gethostname;
 use log::*;
 use rusqlite::Connection;
 mod modes;
@@ -27,6 +25,7 @@ use prettytable::format::{Alignment, TableFormat};
 use prettytable::row;
 use prettytable::{Attr, Cell, Row, Table};
 
+use std::str::FromStr;
 use chrono::prelude::*;
 
 #[macro_use]
@@ -215,6 +214,7 @@ pub enum ColumnType {
 }
 
 fn main() -> Result<(), Error> {
+    use std::fs;
     let proj_dirs = ProjectDirs::from("gt0.ca", "Andrew Phillips", "Keep");
 
     let mut cmd = Args::command();
@@ -444,6 +444,7 @@ fn mode_diff(
         std::thread::spawn(move || {
             // Original code used .expect/.unwrap, implying panics on error.
             // This matches that style. For more robust error handling, return Result from thread.
+            use std::io::BufWriter;
             let mut buffered_pipe_writer_a = BufWriter::new(pipe_writer_a_raw);
             let engine_a = compression::get_engine(compression_type_a_clone)
                 .expect("Unable to get compression engine for Item A");

src/modes/get.rs

@@ -1,6 +1,7 @@
 use anyhow::anyhow;
 
 use crate::compression::CompressionType;
+use std::str::FromStr;
 use clap::Command;
 use std::path::PathBuf;
 use std::str::FromStr;

src/modes/save.rs

@@ -6,12 +6,12 @@ use std::str::FromStr;
 
 use clap::error::ErrorKind;
 use clap::Command;
-use log::{debug, warn};
+use log::debug;
 use rusqlite::Connection;
 
 use crate::compression::CompressionType;
-use crate::db::{self, Item, Meta};
-use crate::modes::common::{get_meta_from_env, format_size, string_column};
+use crate::db::{self};
+use crate::modes::common::{get_meta_from_env};
 use chrono::Utc;
 
 pub fn mode_save(
@@ -40,6 +40,7 @@ pub fn mode_save(
         .unwrap_or(compression::default_type().to_string());
 
 use gethostname::gethostname;
+    use std::io::Write;
     let compression_type_opt = CompressionType::from_str(&compression_name);
     if compression_type_opt.is_err() {
         cmd.error(
@@ -65,7 +66,6 @@ use gethostname::gethostname;
 
     if !args.options.quiet {
         if std::io::stderr().is_terminal() {
-        use is_terminal::IsTerminal;
             let mut t = term::stderr().unwrap();
             t.reset().unwrap_or(());
             t.attr(term::Attr::Bold).unwrap_or(());