Initial commit: OMSORG website + Mitarbeiter-App

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

mitarbeiter-app/service-worker.js

@@ -0,0 +1,13 @@
+const CACHE = 'omsorg-v1';
+const STATIC = ['./app.css'];
+
+self.addEventListener('install', e =>
+  e.waitUntil(caches.open(CACHE).then(c => c.addAll(STATIC)))
+);
+
+self.addEventListener('fetch', e => {
+  if (e.request.url.endsWith('.php') || e.request.method !== 'GET') return;
+  e.respondWith(
+    fetch(e.request).catch(() => caches.match(e.request))
+  );
+});