fix(web_serviceworker): Move service worker initialization to init.ts and remove exports from service worker entrypoint to avoid ESM bundle output

ts_web_serviceworker/classes.dashboard.ts

@@ -1,5 +1,5 @@
 import { getMetricsCollector } from './classes.metrics.js';
-import { getServiceWorkerInstance } from './index.js';
+import { getServiceWorkerInstance } from './init.js';
 import * as interfaces from './env.js';
 
 /**

ts_web_serviceworker/index.ts

@@ -1,10 +1,4 @@
-// TypeScript declatations
-import * as env from './env.js';
-declare var self: env.ServiceWindow;
-
-import { ServiceWorker } from './classes.serviceworker.js';
-
-const sw = new ServiceWorker(self);
-
-// Export getter for service worker instance (used by dashboard for TypedSocket access)
-export const getServiceWorkerInstance = (): ServiceWorker => sw;
+// Service worker entry point - NO EXPORTS here!
+// Exports at entry point cause tsbundle to output ESM format which service workers can't use.
+// The actual initialization happens in init.ts which other modules can import from.
+import './init.js';

ts_web_serviceworker/init.ts

@@ -0,0 +1,10 @@
+// Service worker initialization - creates and exports the SW instance
+// Other modules in the bundle can import from here
+import * as env from './env.js';
+declare var self: env.ServiceWindow;
+
+import { ServiceWorker } from './classes.serviceworker.js';
+
+const sw = new ServiceWorker(self);
+
+export const getServiceWorkerInstance = (): ServiceWorker => sw;