feat(classic-games): 新增 Mini Euclid's Game 小游戏

[wyf027]

Summary

• 新增单文件 HTML + TailwindCSS 小游戏：Mini Euclid's Game
• 文件路径：project/classic-games/20260718-0154-euclid-game-lite.html
• 历史扫描显示 Euclid's Game / euclid-game-lite 未使用；Nim 类已出现过，但本次是不同规则的欧几里得数学博弈

Validation

• 确认文件存在并包含完整 HTML 结构、TailwindCSS CDN 与可运行游戏逻辑
• 通过关键标记检查：startGame、legalMovesFor、applyMove、chooseMove、runAiTurn、chooseAiMove、scoreMove、finishIfWon、render、addEventListener
• 通过内联脚本语法检查：new Function(...)
• 通过 git diff --check -- project/classic-games/20260718-0154-euclid-game-lite.html

Audit

• 审计脚本：run-audit.sh
• 结果：OVERALL_EXIT=0
• WARN：无
• AUDIT_DIR：/tmp/git-commit-audit-20260718-015705-62217

Commit

• Local commit: fe1cc0f2d8b3b8ae42bf3ddab8d488e52249bc01
• Remote commit: 18fadd9fe53b5ce9b7948d81c5c9d7104654dcac

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Stop rendering legal moves after a pile reaches zero

When either player makes a winning move, finishIfWon() sets done and immediately calls render(), but render() still calls legalMovesFor() with a pile value of 0. In that state low is 0, so Math.floor(high / low) becomes Infinity and Array.from({ length: Infinity }) throws a RangeError; the game crashes exactly when a user or AI wins instead of showing the final state. Guard this path before generating legal moves for completed games.

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