Pan project: remove all disabled states, add undo emptied button #40

Job	Run time
android	19m 58s
desktop (ubuntu-22.04)	6m 45s
desktop (windows-latest)	9m 56s
desktop (macos-latest, --target x86_64-apple-darwin)	6m 0s
ios	9m 29s
desktop (macos-latest, --target aarch64-apple-darwin)	5m 22s
	57m 30s

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