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Oh that’s way smaller than you made it sound like. I wouldn’t worry at all.
You’d need to mri/ct scan it to see if there was actual damage to the fibre layers. I’d just get on with riding it and not give it another thought. It properly has rubbed a layer of weave off but I doubt it’ll make any real difference to the integrity.
If you’re worried you could always pay carbon bike repairs in Surrey a visit and part with some cash.
No. Sounds structural, post a photo.
Sorry!