fix: guard service worker cache.put against non-http(s) schemes; correct docs to match actual nginx domain mapping

web/public/sw.js

@@ -24,13 +24,14 @@ self.addEventListener("fetch", (event) => {
   const url = new URL(event.request.url);
 
   if (event.request.method !== "GET") return;
+  if (!url.protocol.startsWith("http")) return;
   if (url.pathname.startsWith("/api")) return;
 
   event.respondWith(
     fetch(event.request)
       .then((res) => {
         const resClone = res.clone();
-        caches.open(CACHE_NAME).then((cache) => cache.put(event.request, resClone));
+        caches.open(CACHE_NAME).then((cache) => cache.put(event.request, resClone).catch(() => {}));
         return res;
       })
       .catch(() => caches.match(event.request))