feat: enhance strictness of Rust compiler settings and improve code quality by treating warnings as errors

src/tool/shell.rs

@@ -63,8 +63,7 @@ impl Tool for Bash {
             .and_then(|v| v.as_str())
             .ok_or_else(|| anyhow!("missing required argument: command"))?
             .to_string();
-        let _description = args.get("description").and_then(|v| v.as_str()).unwrap_or("");
-        let timeout_ms = args.get("timeout").and_then(|v| v.as_u64()).unwrap_or(120000).min(600000);
+        let timeout_ms = args.get("timeout").and_then(|v| v.as_u64()).unwrap_or(120_000).min(600_000);
         // Only gate destructive git operations; credential reads are allowed
         // locally since the AI needs access, and the real threat is committing
         // secrets to a public repo (handled by git pre-commit hooks / user).
@@ -100,9 +99,8 @@ impl Tool for Bash {
                         } else {
                             format!("{}\n\nExit code: 0 ({:.2}s)", trimmed, elapsed)
                         });
-                    } else {
-                        return Ok(format!("{}\n\nExit code: {} ({:.2}s)", trimmed, status.code().unwrap_or(-1), elapsed));
                     }
+                    return Ok(format!("{}\n\nExit code: {} ({:.2}s)", trimmed, status.code().unwrap_or(-1), elapsed));
                 }
                 Ok(None) => {
                     if start.elapsed() > timeout {