Update SP_SpecimenID.py

[totochin1222]

1.	Input & Directory Handling •	Replaced dataHome and size parameters with a single dataRoot input for clarity. •	Now automatically traverses all specimen directories under derivative/boyd-collection/histology/. •	Reference image imgref is optional; if not provided, no color normalization is applied.
2.	Output Structure •	Updated output directories to new structure: •	Masks → mask/ •	Masked samples → mask-sample/ •	QA plots → qa-plot/
3.	Image Naming •	Masked sample files now follow the format {specimen}-s{id} to maintain consistent naming across specimens.
4.	Processing Logic •	Retains all previous steps: •	Specimen-specific cropping •	Background removal and smoothing •	Adaptive binarization •	Single feature identification via flood-fill •	Mask application and color normalization (if imgref provided) •	Supports both serial (cpuNo=1) and parallel processing with multiple cores.
5.	Removed / Deprecated Elements •	Old specID/size logic largely replaced; section selection is now central. •	High-resolution TIF path handling commented out (can be extended later if needed). •	Optional plotting preserved with updated QA plot paths.
6.	General Enhancements •	More robust handling of missing reference images. •	Improved consistency and readability of directory and file handling. •	Code is ready to scale to multiple specimens without manual path changes.