// Minimal service worker — required for PWA installability.
// No caching: all requests pass through to the network.
// Exists solely so browsers recognize the site as installable
// (iOS/Android persist camera permissions after "Add to Home Screen").
//
// IMPORTANT: /hubs/ (SignalR) requests are excluded from interception entirely.
// Service worker fetch() wraps SSE/WebSocket responses in a buffered Response,
// which prevents real-time streaming — SignalR handshakes time out as a result.

const SKIP_PREFIXES = ['/hubs/', '/Kiosk/PollSession'];

self.addEventListener('install', () => self.skipWaiting());
self.addEventListener('activate', e => e.waitUntil(self.clients.claim()));

// No fetch interception — all requests handled natively by the browser.
// The SW exists solely for PWA installability; calling e.respondWith(fetch(request))
// causes TypeError failures on localhost HTTPS due to certificate trust differences
// in the SW context, breaking JS/CSS resource loads.