Add Tetris clone

[coatsnmore]

Summary

• add a standalone Tetris clone with scoring, level progression, and next-piece preview
• expose the new game via an Astro route and add a homepage button

Testing

• not run (not requested)

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https://chatgpt.com/codex/tasks/task_e_68ead5cbc3288324a156ad0903f904d8

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Prevent /tetris iframe from loading itself

The Astro page at /tetris renders an <iframe> whose src is /tetris/index.html. However the page itself builds to dist/tetris/index.html, and there is also a static copy of the game at public/tetris/index.html. As a result the iframe resolves to the same URL as the parent page, causing the page to recursively embed itself during astro dev, or to be overwritten by the static file during astro build so the Layout wrapper is never served. Either way, the intended outer layout and the embedded game cannot coexist. Point the iframe at a different public path (e.g. /tetris-game/index.html) or move the page under another route to avoid the collision.

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