Show queued wishes and lock controls during playback

[TimUx]

Summary

• expose UI lock flags in the state API so wishes block show buttons and running shows block all actions
• render the wish queue on the home page with labels for the current and waiting songs, plus matching styles
• document the queue display and button lock behaviour in the README

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/c38e1ce7ea550d995d74d660a4006e3b608c68d6/requests.html#L93-L96
Block wish submission while show is running

On the wishes page the status poll detects a running show but the disable flag computed in fetchState is never applied to the UI or request submission, so the list remains clickable even during playback. Submitting a wish while a show is running will post to /api/requests, which immediately stops the current playlist (start_request_song calls stop_effects_and_blackout) and interrupts the show despite the intended lock that “running shows block all actions.”

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