Restore v6 simple rules as latest successful dataset

Add precomputed oracle task metrics

Restore simple phase-1 rules as latest dataset

Update to v8-relational-curriculum-90: relational curriculum train mix

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Update Eleusis simple rules to v6-standard-deck-phase1-regions-24

Update Eleusis simple rules to v5-standard-deck-balanced-36

Add v4-standard-deck-no-or-36

Update to v3 no-OR 36-rule curriculum

Update dataset card for v2-simple-56

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