* Use humantime for build duration formatting in CLI
Replaces manual millisecond formatting with humantime::format_duration for improved readability of build duration logs. Adds humantime as a dependency in Cargo.toml.
* Format build duration with millisecond precision
Changed build duration logging to use millisecond precision instead of default formatting to avoid microsecond/nanosecond noise.
* Refactor duration formatting to use helper function to reduce code duplication.
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Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>
