Fetch an evaluation dataset split on demand. Nothing is redistributed in the repo — the
data lands in priv/evals/data/, which is gitignored.
mix foresight.evals.fetch longmemeval_oracle # ~15 MB, evidence-only (reflect dev)
mix foresight.evals.fetch longmemeval_s # ~277 MB, full haystack (retrieval@scale)LongMemEval is MIT-licensed (Wu et al., ICLR 2025): https://github.com/xiaowu0162/LongMemEval