gumroad Add Houdini category to Discovery

Fixes: #2074

Summary

Added Houdini as a new 3D Assets category in Discovery, enabling creators to tag and customers to discover Houdini tools, HDAs, and assets alongside Maya, Blender, Unity, and other 3D software.

Ai Discolsure

None. All code written by me

Livestream Viewing Confirmation

Have watched both the live streams end-to-end

ScreenShot

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After

Dec 09 '25 18:12 Devwill2

@binary-koan Very small fix could you please review this?

Dec 15 '25 15:12 Devwill2

@EmCousin @binary-koan just a gentle ping 😃 This PR has only a very small change. Thanks

Dec 31 '25 13:12 Devwill2

AFK at the moment, will chech this on Jan 2 in no one's on it.

Dec 31 '25 16:12 EmCousin

AFK at the moment, will chech this on Jan 2 in no one's on it.

Happy New Year in advance, @EmCousin! 🎉

Dec 31 '25 16:12 Devwill2

@EmCousin gentle ping on this Thanks :)

Jan 06 '26 12:01 Devwill2

@EmCousin The failing test looks unrelated. Thanks.

Jan 08 '26 13:01 Devwill2

Thanks for the PR! Triggered CI, can merge on green build.

https://github.com/antiwork/gumroad/actions/runs/20831137606/job/59845837127?pr=2256#step:8:414 Flaky test Thanks :)

Jan 08 '26 21:01 Devwill2