Civic loop + physics + Tier‑0 primitives. Runnable symbolic substrate engine.

Deterministic tick loop, module registration, gatekeeper admission, signal dispatch.

Regions, agents, alliances, entropy, integrity, cohesion, peace metric.

Coherence, tension, influence, visibility, drift, interaction, stability metric.

Writing, money, laws, governance, coordination, collective intelligence.

Topic, signal, action, evaluation, resolution — per‑module ecology surface.