feat: add chess position fingerprinting (16,384-bit VSA encoding)#116
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- Add chess module with FEN parser (ChessPosition) and fingerprint encoder (ChessFingerprint) for mapping chess positions to 16,384-bit fingerprints - Bit layout: raw bitboards (768), pawn structure (256), king safety (256), material signature (256), metadata in reserved word - Encode pawn structure features: doubled, isolated, and passed pawns - Encode king safety: pawn shield and castling rights - Add RESONATE operation for k-NN similarity search by Hamming distance - Add as_raw_mut() to Fingerprint for direct word-level writes https://claude.ai/code/session_01AFUWiMg4kXHr9JRS8JtbGY
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https://claude.ai/code/session_01AFUWiMg4kXHr9JRS8JtbGY