Function usize_from_env 

pub fn usize_from_env(var: &str, default: usize) -> usize

Read a usize from an environment variable.

Returns the default if the variable is not set or cannot be parsed.

Example

use agentic_tools_utils::cli::usize_from_env;

// Returns default when var is not set
let value = usize_from_env("NONEXISTENT_VAR_12345", 100);
assert_eq!(value, 100);