docs: README badges + screenshot section (#28) (#63) #51

Job	Run time
Lint & Format	8s
Type Check	18s
Commit-type sync	13s
Branch-protection contexts sync	12s
Coverage	23s
Pre-commit	1m 6s
Frontend Build	16s
Architecture (import-linter)	11s
Frontend Quality	17s
Unit tests	20s
	3m 24s

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