OP, I think you know deep down that you are being massively unreasonable, and that it’s getting uncomfortable now that so many strangers on MN are calling you out on it.
I’m so sorry you had to deal with such a traumatic experience: it’s clear you’re still carrying mental/emotional baggage, and I hope you whatever help you need to recover.
But…it’s utterly irrelevant that you filled in the paperwork or fought for the claim. That would be like your dh suggesting he should keep his annual bonus because he chose to put in extra effort to get it, so you’re not entitled to any of it.
Either you share finances, and that means everything, or you don’t. It sounds as though your dh has generally taken a fair and generous approach towards shared finances (and quite right too!), but if it looks like you aren’t happy to do the same in a rare moment of being able to contribute more than expected, I wouldn’t be at all surprised if that started to change over time…. Why should you be allowed to keep this money for yourself, more than, for example, his next LTIP payout, or whatever?
More to the point, you said you have covered all your hobbies and so on from the joint account until now, so what is it you want to do that you couldn’t do if you treat this payment as family money?
It sounds it’s about having control of the money rather than actually spending it. If that’s the case, it’s probably worth figuring out what’s really going on, as that could really damage your relationship over time.