There are “repairable” laptops, and then there are ThinkPad T-series laptops: the ones corporate IT buys by the pallet, images by the thousands, and expects to survive years of all-day use. During their lives they’ll weather countless commutes, on-the-go presentations, and inevitable splashes of coffee. That’s why Lenovo’s newest ThinkPads are such a big deal: the new T14 Gen 7 and T16 Gen 5…