feat: add module runtime lifecycle

packages/module-sdk/tests/define-module-runtime.test.ts

@@ -0,0 +1,25 @@
+import { describe, expect, it, vi } from "vitest";
+import { defineModuleRuntime } from "../src/index.js";
+
+describe("defineModuleRuntime", () => {
+  it("defines a frozen server runtime without duplicating the static manifest", async () => {
+    const start = vi.fn();
+    const runtime = defineModuleRuntime({
+      id: "example",
+      start,
+      version: "0.1.0",
+    });
+
+    expect(runtime).toEqual({ id: "example", start, version: "0.1.0" });
+    expect(Object.isFrozen(runtime)).toBe(true);
+  });
+
+  it("rejects invalid runtime definitions", () => {
+    expect(() =>
+      defineModuleRuntime({
+        id: "Not Valid",
+        version: "0.1.0",
+      }),
+    ).toThrow("Invalid Ekklesia module runtime definition.");
+  });
+});