fix: include shared runtime group-policy helper and coverage (#23367) (thanks @bmendonca3)

src/web/inbound/access-control.group-policy.test.ts

@@ -0,0 +1,29 @@
+import { describe, expect, it } from "vitest";
+import { __testing } from "./access-control.js";
+
+describe("resolveWhatsAppRuntimeGroupPolicy", () => {
+  it("fails closed when channels.whatsapp is missing and no defaults are set", () => {
+    const resolved = __testing.resolveWhatsAppRuntimeGroupPolicy({
+      providerConfigPresent: false,
+    });
+    expect(resolved.groupPolicy).toBe("allowlist");
+    expect(resolved.providerMissingFallbackApplied).toBe(true);
+  });
+
+  it("keeps open fallback when channels.whatsapp is configured", () => {
+    const resolved = __testing.resolveWhatsAppRuntimeGroupPolicy({
+      providerConfigPresent: true,
+    });
+    expect(resolved.groupPolicy).toBe("open");
+    expect(resolved.providerMissingFallbackApplied).toBe(false);
+  });
+
+  it("ignores explicit default policy when provider config is missing", () => {
+    const resolved = __testing.resolveWhatsAppRuntimeGroupPolicy({
+      providerConfigPresent: false,
+      defaultGroupPolicy: "disabled",
+    });
+    expect(resolved.groupPolicy).toBe("allowlist");
+    expect(resolved.providerMissingFallbackApplied).toBe(true);
+  });
+});