fix(lotus): reply immediately to lotus actions with no mounted handler; new fromWidget actions

Lotus toWidget actions with no handler used to sit in the LazyEventEmitter
backlog forever (host timed out; stale replay on remount). They now get
an immediate {} reply. Adds RequestState and DenoiseState to the enum
(fromWidget) with a test pinning the toWidget/fromWidget split.

Fixes #18

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPmy3tPq869XDW4njjVaKA

src/lotus/lotusActions.test.ts

@@ -0,0 +1,47 @@
+/*
+Copyright 2026 Lotus Guild
+
+SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE in the repository root for full details.
+*/
+
+import { describe, expect, test } from "vitest";
+
+import { LOTUS_TO_WIDGET_ACTIONS, LotusWidgetActions } from "./lotusActions";
+
+describe("LotusWidgetActions", () => {
+  test("every action value is namespaced under io.lotus.*", () => {
+    for (const value of Object.values(LotusWidgetActions)) {
+      expect(value).toMatch(/^io\.lotus\./);
+    }
+  });
+
+  test("LOTUS_TO_WIDGET_ACTIONS contains exactly the toWidget actions", () => {
+    // CallState is the only fromWidget action (host <- widget); everything
+    // else is toWidget (host -> widget) and must be allow-listed so
+    // `initializeWidget` accepts it.
+    const expectedToWidget = [
+      LotusWidgetActions.FocusParticipant,
+      LotusWidgetActions.InjectAudio,
+      LotusWidgetActions.SetQuality,
+      LotusWidgetActions.Decorations,
+      LotusWidgetActions.SetDeafen,
+    ];
+
+    expect(new Set(LOTUS_TO_WIDGET_ACTIONS)).toEqual(new Set(expectedToWidget));
+    expect(LOTUS_TO_WIDGET_ACTIONS).toHaveLength(expectedToWidget.length);
+  });
+
+  test("LOTUS_TO_WIDGET_ACTIONS excludes the fromWidget actions", () => {
+    // CallState, RequestState and DenoiseState are all fromWidget (widget ->
+    // host) per their doc comments in lotusActions.ts, so none of them should
+    // ever be allow-listed as a toWidget action.
+    expect(LOTUS_TO_WIDGET_ACTIONS).not.toContain(LotusWidgetActions.CallState);
+    expect(LOTUS_TO_WIDGET_ACTIONS).not.toContain(
+      LotusWidgetActions.RequestState,
+    );
+    expect(LOTUS_TO_WIDGET_ACTIONS).not.toContain(
+      LotusWidgetActions.DenoiseState,
+    );
+  });
+});