fix: keep core tools when allowlist is plugin-only

src/agents/tool-policy.plugin-only-allowlist.test.ts

@@ -0,0 +1,25 @@
+import { describe, expect, it } from "vitest";
+
+import { stripPluginOnlyAllowlist, type PluginToolGroups } from "./tool-policy.js";
+
+const pluginGroups: PluginToolGroups = {
+  all: ["lobster", "workflow_tool"],
+  byPlugin: new Map([["lobster", ["lobster", "workflow_tool"]]]),
+};
+
+describe("stripPluginOnlyAllowlist", () => {
+  it("strips allowlist when it only targets plugin tools", () => {
+    const policy = stripPluginOnlyAllowlist({ allow: ["lobster"] }, pluginGroups);
+    expect(policy?.allow).toBeUndefined();
+  });
+
+  it("strips allowlist when it only targets plugin groups", () => {
+    const policy = stripPluginOnlyAllowlist({ allow: ["group:plugins"] }, pluginGroups);
+    expect(policy?.allow).toBeUndefined();
+  });
+
+  it("keeps allowlist when it mixes plugin and core entries", () => {
+    const policy = stripPluginOnlyAllowlist({ allow: ["lobster", "read"] }, pluginGroups);
+    expect(policy?.allow).toEqual(["lobster", "read"]);
+  });
+});