refactor: move browser runtime seams behind plugin metadata

src/node-host/plugin-node-host.test.ts

@@ -0,0 +1,79 @@
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { createEmptyPluginRegistry } from "../plugins/registry-empty.js";
+import { resetPluginRuntimeStateForTest, setActivePluginRegistry } from "../plugins/runtime.js";
+import {
+  invokeRegisteredNodeHostCommand,
+  listRegisteredNodeHostCapsAndCommands,
+} from "./plugin-node-host.js";
+
+afterEach(() => {
+  resetPluginRuntimeStateForTest();
+});
+
+describe("plugin node-host registry", () => {
+  it("lists plugin-declared caps and commands", () => {
+    const registry = createEmptyPluginRegistry();
+    registry.nodeHostCommands = [
+      {
+        pluginId: "browser",
+        pluginName: "Browser",
+        command: {
+          command: "browser.proxy",
+          cap: "browser",
+          handle: vi.fn(async () => "{}"),
+        },
+        source: "test",
+      },
+      {
+        pluginId: "photos",
+        pluginName: "Photos",
+        command: {
+          command: "photos.proxy",
+          cap: "photos",
+          handle: vi.fn(async () => "{}"),
+        },
+        source: "test",
+      },
+      {
+        pluginId: "browser-dup",
+        pluginName: "Browser Dup",
+        command: {
+          command: "browser.inspect",
+          cap: "browser",
+          handle: vi.fn(async () => "{}"),
+        },
+        source: "test",
+      },
+    ];
+    setActivePluginRegistry(registry);
+
+    expect(listRegisteredNodeHostCapsAndCommands()).toEqual({
+      caps: ["browser", "photos"],
+      commands: ["browser.inspect", "browser.proxy", "photos.proxy"],
+    });
+  });
+
+  it("dispatches plugin-declared node-host commands", async () => {
+    const handle = vi.fn(async (paramsJSON?: string | null) => paramsJSON ?? "");
+    const registry = createEmptyPluginRegistry();
+    registry.nodeHostCommands = [
+      {
+        pluginId: "browser",
+        pluginName: "Browser",
+        command: {
+          command: "browser.proxy",
+          cap: "browser",
+          handle,
+        },
+        source: "test",
+      },
+    ];
+    setActivePluginRegistry(registry);
+
+    await expect(invokeRegisteredNodeHostCommand("browser.proxy", '{"ok":true}')).resolves.toBe(
+      '{"ok":true}',
+    );
+    await expect(invokeRegisteredNodeHostCommand("missing.command", null)).resolves.toBeNull();
+    expect(handle).toHaveBeenCalledWith('{"ok":true}');
+  });
+});