V48 Gate 3 (specification-only): Restore historical README CI verific… #1332

Job	Run time
Validate GitHub Actions workflows	15s
Lint, Type-Check & Build	2m 58s
CodeQL Analysis	0s
Unit & Integration Tests (mocks)	1m 0s
Super Linter (misc files)	0s
E2E, Visual & DB Tests	0s
	4m 13s

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