refactor: scrollbar styling #91

Job	Run time
Prepare CI	1s
Lint App / biomejs	15s
Tests / Run Tests	2m 58s
Build / Build Linux (electron-builder)	4m 5s
Build / Build Windows (electron-builder)	2m 30s
Build / Build macOS (electron-builder)	2m 43s
	12m 32s

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