diff --git a/.gitignore b/.gitignore
index 978ea79..88fae03 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,6 +9,9 @@ dist/
 build/
 *.tsbuildinfo
 
+# Generated at build time by next.config.ts — do not commit
+public/sw.js
+
 # Auto-generated by Next.js — never edit, never commit
 next-env.d.ts
 
diff --git a/public/sw.js b/public/sw.js
deleted file mode 100644
index 964bbfc..0000000
--- a/public/sw.js
+++ /dev/null
@@ -1,162 +0,0 @@
-// famapp service worker — v1778106925247
-// Generated at build time. Do not edit directly.
-const CACHE_VERSION = "1778106925247";
-const SHELL = "famapp-shell-" + CACHE_VERSION;
-const API = "famapp-api-" + CACHE_VERSION;
-const OFFLINE = "/offline.html";
-
-// --- install: precache the offline fallback ---
-
-self.addEventListener("install", (e) => {
-  e.waitUntil(caches.open(SHELL).then((c) => c.add(OFFLINE)));
-  self.skipWaiting();
-});
-
-// --- activate: evict old-version caches, claim clients ---
-
-self.addEventListener("activate", (e) => {
-  e.waitUntil(
-    caches
-      .keys()
-      .then((keys) =>
-        Promise.all(
-          keys
-            .filter(
-              (k) =>
-                k.startsWith("famapp-") && !k.endsWith("-" + CACHE_VERSION)
-            )
-            .map((k) => caches.delete(k))
-        )
-      )
-      .then(() => self.clients.claim())
-  );
-});
-
-// --- fetch: strategy dispatch ---
-
-self.addEventListener("fetch", (e) => {
-  const { request } = e;
-  const url = new URL(request.url);
-
-  // Mutations — network-only; notify clients if the network is unreachable.
-  if (request.method !== "GET") {
-    e.respondWith(
-      fetch(request).catch(() => {
-        self.clients
-          .matchAll({ includeUncontrolled: true })
-          .then((cs) =>
-            cs.forEach((c) => c.postMessage({ type: "OFFLINE_MUTATION" }))
-          );
-        return new Response(JSON.stringify({ error: "offline" }), {
-          status: 503,
-          headers: { "Content-Type": "application/json" },
-        });
-      })
-    );
-    return;
-  }
-
-  // Auth endpoints — always network-only.
-  if (url.pathname.startsWith("/api/auth/")) return;
-
-  // Next.js immutable static chunks — stale-while-revalidate.
-  if (url.pathname.startsWith("/_next/static/")) {
-    e.respondWith(staleWhileRevalidate(request, SHELL));
-    return;
-  }
-
-  // API GETs — network-first with 2-second timeout, fall back to cache.
-  if (url.pathname.startsWith("/api/")) {
-    e.respondWith(networkFirstWithTimeout(request, API, 2000));
-    return;
-  }
-
-  // Navigation — stale-while-revalidate; fall back to offline page.
-  if (request.mode === "navigate") {
-    e.respondWith(navigateWithFallback(request));
-    return;
-  }
-});
-
-// --- push notifications ---
-
-self.addEventListener("push", (e) => {
-  if (!e.data) return;
-  const data = e.data.json();
-  e.waitUntil(
-    self.registration.showNotification(data.title || "famapp", {
-      body: data.body || "",
-      data: { url: data.url || "/" },
-      icon: "/icon-192.png",
-      badge: "/icon-192.png",
-    })
-  );
-});
-
-self.addEventListener("notificationclick", (e) => {
-  e.notification.close();
-  const url = e.notification.data?.url || "/";
-  e.waitUntil(
-    self.clients
-      .matchAll({ type: "window", includeUncontrolled: true })
-      .then((cs) => {
-        const match = cs.find((c) => c.url.includes(self.location.origin));
-        if (match) {
-          match.focus();
-          return match.navigate(url);
-        }
-        return self.clients.openWindow(url);
-      })
-  );
-});
-
-// --- strategy helpers ---
-
-async function staleWhileRevalidate(request, cacheName) {
-  const cache = await caches.open(cacheName);
-  const cached = await cache.match(request);
-  const update = fetch(request)
-    .then((res) => {
-      if (res.ok) cache.put(request, res.clone());
-      return res;
-    })
-    .catch(() => null);
-  // Serve cached immediately; let update happen in the background.
-  return cached ?? (await update);
-}
-
-async function networkFirstWithTimeout(request, cacheName, ms) {
-  const cache = await caches.open(cacheName);
-  const ac = new AbortController();
-  const timer = setTimeout(() => ac.abort(), ms);
-  try {
-    const res = await fetch(request, { signal: ac.signal });
-    clearTimeout(timer);
-    if (res.ok) cache.put(request, res.clone());
-    return res;
-  } catch {
-    clearTimeout(timer);
-    return (await cache.match(request)) ?? new Response(null, { status: 503 });
-  }
-}
-
-async function navigateWithFallback(request) {
-  const cache = await caches.open(SHELL);
-  const cached = await cache.match(request);
-  const networkFetch = fetch(request)
-    .then((res) => {
-      if (res.ok) cache.put(request, res.clone());
-      return res;
-    })
-    .catch(() => null);
-  if (cached) {
-    // Return cached immediately; revalidate in the background.
-    networkFetch;
-    return cached;
-  }
-  const net = await networkFetch;
-  if (net) return net;
-  return (
-    (await cache.match(OFFLINE)) ?? new Response("Offline", { status: 503 })
-  );
-}