feat(classic-games): 新增 Mini Checkers Jump 小游戏

[wyf027]

Summary

• 新增单文件 TailwindCSS 小游戏 Mini Checkers Jump。
• 玩家选择棋子，跳过相邻棋子落到空格并移除被跳棋子，目标尽量只剩一枚。

File

• project/classic-games/20260710-0336-checkers-jump.html

Validation

• LIGHT_VALIDATION=pass：确认 HTML 结构、TailwindCSS CDN、核心游戏逻辑标记与脚本语法。
• git diff --check passed for project/classic-games/20260710-0336-checkers-jump.html。
• Commit scope checked: only the new HTML file was staged locally.

Audit

• run-audit.sh OVERALL_EXIT=0。
• AUDIT_DIR=/tmp/git-commit-audit-20260710-033740-73783。
• WARN summary: none detected.

History Check

• Checked recent PR metadata and existing project/classic-games filenames before generation.
• checkers-jump was not found in PR title/body/branch metadata or existing filenames, so this gameplay does not repeat prior generated games.

[chatgpt-codex-connector]

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Reviewed commit: b7a47576b9

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[chatgpt-codex-connector]

Give the board a definite width

When this page is opened, the board is a centered flex item with only aspect-square and max-h, so it shrink-wraps to the grid contents instead of using the available container width; the cells render roughly text-sized rather than as a usable 5x5 board. Add a real width/max-width constraint, such as w-full max-w-[...], so the aspect ratio has a definite dimension to size from.

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