Worksheet v1.0.0
First complete release: 14 chapters across 5 parts, 35 end-to-end traces, appendices A-F, 12 offline hands-on labs (86 tests, zero API keys), and per-level exams (L1 Builder / L2 Operator / L3 Architect) with pytest-scored practicals. Two editions attached: the full book and a candidate edition with model answers stripped for self-testing.