The first thing the invading Israli forces hits is a mosque.

That is all that needs to be said.

Israel has litle clue about operations of Hamas and was thus completely surprised by the attacks.

Israel is well informed about Hamas operations and thus is able to precisely target their hideouts.

Pick one as they can't obviously be true at the same time...

If it isn't true you'll never hear about it lol

It's not like PIJ has designated military bases set well aside from the civilian populace.

I've add that this would not be remotely out of line with history. Weapons have been stored at Al-Aqsa even in the past.

https://www.haaretz.com/israel-news/2017-07-20/ty-article/watch-how-assailants-carried-out-temple-mount-attack/0000017f-f595-d460-afff-fff70d7a0000