CZ-452 ZKM. Best .22LR for the money ever made. It's built like a Mauser and I don't know how you'd hurt it.
What I'm looking for is this. The absolutely most drop dead reliable, take a pounding, abuse me all day, every day, for ten years (you know what I mean) .22 you can recommend. Assume all due care and cleaning will take place.
I have no preference between semi, lever, pump, or bolt action.
Parts replacement, if ever necessary, should be simple and capable of being made by a gun smithing moron (me.)