chore: remove unused dependencies and dead code

Co-authored-by: aider (openai/andrew.openrouter.qwen.qwen3-coder) <aider@aider.chat>

Cargo.toml

@@ -40,7 +40,6 @@ sha2 = "0.10.0"
 local-ip-address = "0.5.5"
 dns-lookup = "2.0.2"
 uzers = "0.11.3"
-isatty = "0.1.9"
 
 [dev-dependencies]
 tempfile = "3.3.0"

src/compression_engine/program.rs

@@ -94,21 +94,3 @@ impl CompressionEngine for CompressionEngineProgram {
         Ok(Box::new(process.stdin.unwrap()))
     }
 }
-
-fn get_program_path(program: &str) -> Result<String> {
-    debug!("COMPRESSION: Looking for executable: {}", program);
-    if let Ok(path) = env::var("PATH") {
-        for p in path.split(':') {
-            let p_str = format!("{}/{}", p, program);
-            let stat = fs::metadata(p_str.clone());
-            if let Ok(stat) = stat {
-                let md = stat;
-                let permissions = md.permissions();
-                if md.is_file() && permissions.mode() & 0o111 != 0 {
-                    return Ok(p_str);
-                }
-            }
-        }
-    }
-    Err(anyhow!("Unable to find binary {} in PATH", program))
-}

src/main.rs

@@ -26,27 +26,6 @@ pub mod meta_plugin;
 
 extern crate term;
 
-lazy_static! {
-    static ref FORMAT_BOX_CHARS_NO_BORDER_LINE_SEPARATOR: TableFormat =
-        format::FormatBuilder::new()
-            .column_separator('│')
-            .borders('│')
-            .separators(
-                &[format::LinePosition::Top],
-                format::LineSeparator::new('─', '┬', '┌', '┐')
-            )
-            .separators(
-                &[format::LinePosition::Title],
-                format::LineSeparator::new('─', '┼', '├', '┤')
-            )
-            .separators(
-                &[format::LinePosition::Bottom],
-                format::LineSeparator::new('─', '┴', '└', '┘')
-            )
-            .padding(1, 1)
-            .build();
-}
-
 /**
  * Main struct for command-line arguments.
  */

src/modes/list.rs

@@ -167,5 +167,3 @@ pub fn mode_list(
 
     Ok(())
 }
-
-// These helper functions are needed for the mode_list function