docs: land CI-green + hello-page screenshots; trim Jaeger placeholder #56

Job	Run time
Pre-commit	1m 3s
Unit tests	27s
Lint & Format	9s
Type Check	16s
Frontend Build	15s
Coverage	21s
Branch-protection contexts sync	11s
Commit-type sync	10s
Frontend Quality	18s
Architecture (import-linter)	8s
	3m 18s

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