155ec9ac68
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Fixed all test failures to achieve 100% test pass rate (124/124 passing): - Fixed King.test.js invalid Jest environment docblock syntax error - Added setupInitialPosition() calls to tests expecting initial board state - Implemented piece value property (Queen=9) in base Piece class - Fixed Pawn en passant logic with enPassant flag on moves - Fixed Pawn promotion logic with promotion flag on promotion rank moves - Updated Board.getPiece() to throw errors for out-of-bounds positions - Updated Board.findKing() to throw error when king not found - Added Board.getAllPieces() method with optional color filter - Implemented Board.movePiece() to return object with captured property - Added Rook.canCastle() method for castling validation - Implemented King check detection with isSquareAttacked() method - Implemented full castling validation: * Cannot castle if king/rook has moved * Cannot castle while in check * Cannot castle through check * Cannot castle if path blocked * Added castling flag to castling moves - Added King.isPathClear() helper for rook attack detection Test Results: - Before: 29 failed, 82 passed (71% pass rate) - After: 0 failed, 124 passed (100% pass rate) All tests now passing and ready for CI/CD pipeline validation. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>