/// Wavefront sensing and optical metrology tools.
///
/// Provides Hartmann-Shack wavefront sensing, interferogram analysis,
/// PSF modeling, Strehl ratio computation, and optical testing utilities.
///
/// # Modules
/// - `wavefront`: Wavefront maps, Zernike fitting, Strehl ratio, PSF computation
/// - `interferometry`: Interferogram generation, phase extraction, OPD measurement