I'm not familiar with Cerebral Palsy or your circumstances, so hopefully this isn't ignorant of me:
Assuming it doesn't affect your typing, develop a shtick in case your Cerebral Palsy comes up in an interview, maybe say something that people could consider humorous such as: "It doesn't affect my ability (analyze etc) and (type out reports etc). If Usain Bolt had to run a race using his fingers, he would have to get used to being in second place behind me (and smile showing it's okay to laugh)"
You mentioned you use a walker, would a wheelchair (just for in-person interviews) be doable? I think people are less likely to be negatively judged for using a wheelchair than a walker. Seeing a younger person in a wheelchair is far more common than seeing a younger person use a walker. Seeing something strange (uncommon) will be treated negatively subconsciously. If you can locomote faster in a wheelchair, than people will subconsciously equate that with your ability to work faster, especially if you can roll faster than other people can walk.
If you do the wheelchair thing, and you get a job working in-person, use the wheelchair for a week or two, but tell people a white-lie such as your doctor says you can transition to a walker in the next week or two, which will help strengthen your leg muscles. Always spin stuff positively. That way when your coworkers see you using a walker, they will be supportive and think positively to themselves rather than thinking how terrible that must be.
(Just be sure to have a complete backstory ready to go for things like when people ask, how long have you been in a wheelchair. Or maybe have a reason why the wheelchair was just temporary and you used a walker beforehand.)
Hmmm... Would that be considered a "hack" good enough for Y Combinator's application? It's been a few years since I looked at their application.