Spot weld/grinding marks near strut towers— factory or accident repair? (2013 Prius）

Hi everyone,

I bought a 2013 Prius second-hand last year. Recently, I checked under the hood and noticed some marks around the strut tower area on both sides. They look a bit like grinding or welding scars on the metal surface.

I’m not sure if this is a normal result of the factory process or if it could indicate past accident repair.

Here are two photos I took:
(attach your two pictures below)

Both sides look similar and the marks are symmetrical, but they don’t look very smooth to me, so I wanted to double-check with the community.

Has anyone else seen the same kind of marks on their Gen 3 Prius? Is this just the way Toyota does the spot weld and grinding at the factory, or should I be concerned about previous collision repair?

Thanks in advance for any insights!

Roland