Normalize gemini-3.1-pro-preview-urg to gemini-3.1-pro-preview in SFT IDs, SFT model metadata, and RL identifiers. Rebuild the matching SFT viewer Parquet file and refresh checksums. No claude-sonnet-4-6 -urg/-aws variants were present.
Remove the GRPO launcher, reward implementation, path helper, training reference, LLaMAFactory registry, and extraction helper. Update dataset documentation, release manifest, and checksums so the remaining data release stays self-consistent.
