SPR — Sprint 04: Architecture (v1.0.0)
Sprint 04 — Architecture (v1.0.0). Constitution (7 principles), C4 diagram, bi-temporal SQLite, RunSpec YAML, 3-service Docker Compose. Each sprint produced ≥1 verifiable deliverable expressed as an OKR, managed as a one-person Agile adaptation (Scrum + Spec-Driven Development + Design Science Research).
Source: PUMA project documentation + raw benchmark results · Traceability: ANXHN-017,ANXHN-018 · Confidence: verified-at-primary-source