Publish complete six-codebase bundle as current release

Add verified six-scenario OpenAI4S codebase bundle

Document mirrored checkpoints, datasets, and license boundaries

Add pinned MIT RXNMapper distribution

Add pinned PaRoutes source and downloader

Add Apache-2.0 Buchwald-Hartwig OOD dataset

Add model provenance and validation manifests

Copy files from models/xiaoruiwang/ChemEnzyRetroPlanner_metadata

Copy files from models/xiaoruiwang/ChemEnzyRetroPlanner_metadata

Copy files from models/sagawa/ReactionT5v2-yield

Copy files from models/sagawa/ReactionT5v2-forward

Add OpenAI4S retrosynthesis scenario bundle

initial commit