Two-deck (104-card) Spider on the upstream Stack/Pile containers,
exercising the multi-deck Card encoding for the first time:
- SpiderGame: 10-pile deal (4x6 + 6x5), build-down-any-suit,
same-suit-run pickup, deal-10 gated on no empty pile, automatic
K->A run removal, win at 8 runs
- SpiderSuits difficulty (1/2/4 suits over the same 104 cards);
1- and 2-suit games contain identical Card values by construction
(documented — engine entity mapping will need positional keys)
- Seeded deals via inline SplitMix64 + Fisher-Yates (core has no
rand dep; Spider's seed space is deliberately self-contained)
- SpiderGameState session wrapper mirroring GameState conventions:
Result<_, MoveError> mutations, upstream undo/score bookkeeping,
Microsoft-style scoring (500 base, -1/move, +100/run, -1/undo)
- 17 unit tests + card-conservation/validity proptest over random
legal walks; stacked-deal win-path test included
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
funman300