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With grim determination, you set about repairing the damaged landscape.
You cease your efforts to restore the area back to its original state.
These two messages indicate that you are starting or stopping city repairs. However, the second message is easy to miss when a lot is happening around you. If you LOOK, you can see if others are repairing:
Druidess Yae Dawyn diligently repairs the surrounding area.
But I have not found a way to check if you are still repairing yourself. Restarting city repairs is an option, but costly on willpower. I could ask others to look, if there are others. However, I would like to have a way to check if I am still repairing, without interrupting my repairs (DEF will interrupt them, for example).