Transverse quantum-state characterization of programmable electron optics: 4D-STEM datasets and mixed-state reconstructions (Part 1 of 2)

Part 1 of 2. Data and reconstructions supporting "Transverse quantum-state characterization of programmable electron optics." This part contains 10 of the 21 descan-corrected 4D-STEM datasets (stems 0016, 0019, 0020, 0024, 0027, 0028, 0029, 0031, 0033, 0036), PLUS the complete set of eight-physical-mode mixed-state ptychographic reconstructions (.npz for all 21 stems), the DATA_MANIFEST.md, and CHECKSUMS.md5. The remaining 11 datasets are in Part 2 of 2 (see related identifiers). 4D-STEM datasets are HDF5: dataset 'data' of shape (256, 256, 192, 192) float16 (256x256 scan x 192x192 detector), plus 'com_fitted' and mean diffraction patterns. Reconstruction .npz: complex probe mode stacks (9 modes = 8 physical + 1 radial-support absorber), mode powers, object amplitude/phase, losses. See DATA_MANIFEST.md for the full manifest, reconstruction command, calibration/masks/seeds, and software environment. Analysis and figure scripts: https://github.com/ECLIPSE-Lab/mems_ptychography