seed explanation

Add design documentation reference to README

Update DESCRIPTION

Update README.md

add scLENS

fix a bug for n_workers

Update README.md

Add reproducible seeding to clustering functions

Introduced an optional 'seed' parameter to scICE_clustering and all core clustering routines for deterministic, reproducible results. Updated documentation and README with usage examples and troubleshooting tips for reproducibility. All randomization in clustering, optimization, and bootstrap steps now supports hierarchical seeding for consistent results across runs.