Convergence Rationale (C1)

State 006-observability-lgtm-compose is the C1 architecture convergence state.

Rationale:

• It consolidates architecture hardening before functional expansion: durable data, robust messaging, and observability.
• It creates a stable operational baseline for adding functional features without re-solving platform instrumentation.
• It is the recommended branching point for new functional states unless a narrower pedagogical target is explicitly required.