NowChessSystems/.claude/agent-memory/scala-implementer/project_chess_tui.md

name, description, type

name	description	type
chess_tui_implementation	Chess TUI implemented in modules/core under de.nowchess.chess — model, renderer, parser, game loop	project

Chess TUI standalone app implemented in modules/core, package de.nowchess.chess.

Why: Initial feature to demonstrate the system's TUI capability per ADR-001.

How to apply: When extending the chess logic (legality, castling, en passant, promotion), build on the existing Model.scala opaque Board type and add methods via extension. The @main entry point is chessMain in Game.scala. Test.scala still exists as a separate hello-world stub — do not remove it.

Key design choices:

• Board is an opaque type over Map[Square, Piece] with extension methods
• Color and PieceType are Scala 3 enums
• Renderer.render returns String, never prints
• Parser.parseMove returns Option[(Square, Square)] — coordinate notation only (e.g. e2e4)
• No move legality validation — moves are applied as-is
• ANSI 256-colour background codes used for light/dark squares (48;5;223 beige, 48;5;130 brown)