feat: add core contracts

packages/core/src/run-event.test.ts

@@ -0,0 +1,9 @@
+import { describe, expect, it } from "vitest";
+
+import { RunEventPayloadSchemas, RunEventTypeValues } from "./run-event.js";
+
+describe("run events", () => {
+  it("keeps a payload schema for every closed run event type", () => {
+    expect(Object.keys(RunEventPayloadSchemas).sort()).toEqual([...RunEventTypeValues].sort());
+  });
+});