A few more recent sources, including some Israeli ones:

https://www.abc.net.au/news/2024-09-07/israel-hannibal-directive-kidnap-hamas-gaza-hostages-idf/104224430

https://www.middleeastmonitor.com/20231021-israel-settler-israel-forces-killed-hostages-not-hamas/

https://www.haaretz.com/israel-news/2024-02-06/ty-article/.premium/idf-probing-death-of-12-hostages-in-beeri-house-shelled-on-orders-of-senior-officer/0000018d-7b6c-d008-a9cd-fbfdb0040000

https://www.timesofisrael.com/liveblog_entry/idf-officer-recounts-ordering-tank-fire-on-beeri-home-during-hostage-standoff-on-oct-7/

https://m.youtube.com/watch?v=rTQcjyhPOIk

https://youtube.com/watch?v=bjGL0HFTgiU

https://youtube.com/watch?v=GjC0_swYbT4

Their plans were clearly to capture and ransom them. Even Israeli witnesses testify to that, as well as to the fact that the IDF did the vast majority of damage.