I’m probably the only one daft enough but I keep losing civilians when I excavate because I forget that raiders have arrived and replacement temple workers keep going back to complete the excavation.
It would help me a lot if the excavation was cancelled when a worker gets killed excavating.
I think the point there is, that there are raiders guarding around the ruins and you are actually excavating in hostile territory. When starting the excavation work, some soldiers are needed to protect your workers.
I have a ruin that has raiders guarding it, but only if I have an excavation in progress. Turn off excavation and no raiders appear, which allows me time to set up towers and walls around the excavation. Walls are not completed yet and I might have to double layer them.