EMG-BIDS conversion artifact (GRABMyo, Hyser) and reproducible pipeline

Data and code artifact accompanying the survey "Standardization of Electromyography Data: Layers, Effects, and the Path to Practical Adoption: A Survey." Two widely used public EMG datasets are reorganized into the BIDS-EMG (BEP042, BIDS v1.11.0) dataset-organization standard as a proof-of-concept case study, together with the full download, conversion, and validation code. The conversion is lossless (WFDB to 24-bit BDF). This release contains a two-subject demonstration subset (sub-01, sub-02) for each dataset; the full datasets are reproducible with the included scripts from the original PhysioNet sources. Provenance: Derived from GRABMyo (PhysioNet v1.1.0, doi:10.13026/89dm-f662; Pradhan et al., Sci Data 9:733, 2022, doi:10.1038/s41597-022-01836-y; CC-BY-4.0) and Hyser (PhysioNet hd-semg v2.0.0, doi:10.13026/hxan-pe94; Jiang et al., IEEE TNSRE 29:1035-1046, 2021, doi:10.1109/TNSRE.2021.3082551; ODC-BY-1.0). Signals are unchanged; only organization and metadata are added. grabmyo-bids retains CC-BY-4.0; hyser-bids retains ODC-BY-1.0; code is MIT.