Set home buttons to two-column grid

[TimUx]

Summary

• arrange the home action buttons in a two-column grid for consistent spacing and shape

Testing

• python -m py_compile app.py

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Codex Task

[chatgpt-codex-connector]

💡 Codex Review

https://github.com/TimUx/fpp-control/blob/1848276ee3175e0bfc513637172d2b50960055d3/index.html#L283-L286
Rotating access code never re-locks previously unlocked clients

The access gate only checks whether localStorage contains the hardcoded value 'yes', so once a browser has been unlocked it stays unlocked forever. If the operator changes ACCESS_CODE (e.g., from 1234 to 5678), existing clients with the old flag still bypass the prompt because hasAccess() ignores the new code and calls unlock() immediately. That makes code rotation ineffective and leaves the controls open to anyone who has ever entered any past code.

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