1 year
That sucks, I’ve been there. I recommend dry, cheap, bulk rice and beans. They are the best in terms of calories per dollar that you can store for a long time. Powdered peanut butter is good too. We used to cook two cups of rice and one cup of beans together in a rice cooker with three cups of water and then season it with whatever cheap dollar store spices we had. Very filling meal. The peanut butter is dessert.
Follow the official repair guide! https://www.ifixit.com/Guide/Steam+Deck+Left+Bumper+Button+Replacement/148936
Valve partnered with iFixIt to provide replacement parts and step by step walkthroughs for how to fix your Deck.