You should be happy with it today! I have another car that I have had for 2 months and (as I dig into it) seems to have some paint work. Frankly I marveled at the quality of the finish after 15 years...I just was told that it was a garage queen.
Anyway, I have no other evidence (other than some possible tape lines) that this car was damaged...it seems good/tight/etc...so I have decided that: 1) Maybe the previous owner had some areas "touched up". 2) Although, I don't ever plan on selling it...I don't KNOW of any damage that I would have to disclose. 3) I wouldn't/couldn't do anything about any previous damage. If it ever exhibited some damaged attributes (like alighnment issues, etc...) I would take care of them as regular maintenance.