S1: Deterministic Rhai surface (sandbox + claims/effects)

[flyingrobots]

Context

• Rhai is the intended authoring layer, but it must not punch holes in determinism (no HostTime/IO without Views/claims).

Goal

• Define and implement a minimal deterministic Rhai embedding surface that routes side effects through Echo Views.

Scope

• Define feature mask / allowed Rhai features for determinism.
• Define host modules as Views (clock, rng, kv, net emit) that produce replay-safe claims/decision records.
• Optional: fiber model (yield/await with claim/effect receipts).

Exit Criteria

• A simple Rhai script can run in the sandbox and produce deterministic state changes + receipts.

Links

• docs/spec-concurrency-and-authoring.md
• docs/spec-time-streams-and-wormholes.md

[flyingrobots]

Nope, we use GraphQL schema now. Bye. Closed.