fix: declare test split via configs.data_files (was auto-detected as train)

docs: document sub-inventory binding constraint

data: refresh ground truth (15 F6 objectives within 1% MIP tol)

docs: refresh inventory dynamics, regenerate prompts and dataset

Add ReLoop GitHub badge

Add badges for arXiv, GitHub, and license

Update paper title, citation, and arXiv link

Refine F6 tolerance: 1% for pack_size and fixed_order only

Clarify rationale for prompt format roles

Update dataset card: F6 tolerance, NL4Opt count, prompt format roles

Fix non-ASCII characters in descriptions

Initial release: RetailOpt-190 benchmark dataset

initial commit