Change color of Check button based on autocheck status

[x-sheep]

Part of #328

This will change the Check button to display one of three colors, depending on if the Answer Check is on Guarded, Auto or Disabled. The color considers the effective setting, meaning that a puzzle without support for Guarded will not display the Guarded colors. Edit mode will always show the Disabled colors.

I'm not too attached to any of the colors here, so feel free to change them around.

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Name	Status	Preview	Updated
pzprjs	✅ Ready (Inspect)	Visit Preview	Nov 29, 2022 at 3:25PM (UTC)

[robx]

I'm not sure this is much of an improvement as is, seems it might be worthwhile iterating on the change a bit.

I was imagining something a bit more dynamic, taking into account the state of the puzzle. E.g.:

• with manual check, the button is always a blue "Check" as currently
• with unguarded autocheck, the button is a red "Show errors" while the puzzle is unsolved, and a disabled "Complete" when it's solved
• with guarded autocheck, the button is a faint red "Incomplete" while the checker fails in the autocheck guard, and behaves like unguarded autocheck when the completeness check passes

(Red "Show errors" seems a bit too extreme, but something along those lines would make it more clear what's actually going on.)

[x-sheep]

• with guarded autocheck, the button is a faint red "Incomplete" while the checker fails in the autocheck guard, and behaves like unguarded autocheck when the completeness check passes

Wouldn't it make more sense for the Check button to show which cells need to be determined? If we're just going off dynamic button labels, clicking a button labeled "Incomplete" can still show a "Completed" popup if there are no actual errors.