feat: plugins only see their own host settings in the browser

plugins/wake-on-lan/src/frontend/index.tsx

@@ -1,6 +1,6 @@
 import { Zap } from "lucide-react";
 import type { TermixApp } from "@termix/plugin-sdk/frontend";
-import { hasMacAddress, wakeHost } from "./host-action.js";
+import { hasMacAddress, macAddressOf, wakeHost } from "./host-action.js";
 
 export function activate(app: TermixApp): void {
   app.registerHostAction({
@@ -12,4 +12,8 @@ export function activate(app: TermixApp): void {
     when: (host) => hasMacAddress(host),
     run: (host) => wakeHost(app.api, app.t, String(host.id)),
   });
+
+  // A saved host's MAC address, for plugins that send their own wake packet.
+  app.registerAction("wakeOnLan.macAddress", ((hostId: string | number) =>
+    macAddressOf(app.getHost(hostId))) as never);
 }