spec: deepen ENGI demo parity and draft V7 #4

Job	Run time
Lint, Type-Check & Build	3s
CodeQL Analysis (javascript-typescript)	2m 51s
Unit & Integration Tests (mocks)	0s
Super Linter (misc files)	0s
Validate GitHub Actions workflows	0s
E2E, Visual & DB Tests	0s
	2m 54s

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