- build_trainset gains --radius (chars each side of the cited name) and --out;
merge-gap scales with radius. Default 600 unchanged.
- trainset_3x + train/val/test_3x.jsonl: same 10,519 triples and same trust split,
but ~3x more surrounding prose per triple (~47 -> ~132 tokens/triple, median
~3.7k tokens/sample). Keeps the 100% name-in-text guarantee.
- DATASET.md documents both context sizes.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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