feat: Web 版上线 footpr.linyux.cn —— 登录页 + 按用户隔离的命令 API + 静态托管

sync-server/www/sw.js

@@ -0,0 +1,45 @@
+// PWA Service Worker v2
+// - 页面导航：网络优先（构建更新后强制拿到新 index.html），离线才回落缓存
+// - 静态资源：缓存优先
+// - /api：直连不缓存
+const CACHE = 'fp-static-v2';
+const CORE = ['/', '/manifest.webmanifest', '/icons/pwa-192.png', '/icons/pwa-512.png'];
+
+self.addEventListener('install', (e) => {
+  self.skipWaiting();
+  e.waitUntil(caches.open(CACHE).then((c) => c.addAll(CORE)));
+});
+
+self.addEventListener('activate', (e) => {
+  e.waitUntil(
+    caches.keys()
+      .then((ks) => Promise.all(ks.filter((k) => k !== CACHE).map((k) => caches.delete(k))))
+      .then(() => self.clients.claim())
+  );
+});
+
+self.addEventListener('fetch', (e) => {
+  const url = new URL(e.request.url);
+  if (e.request.method !== 'GET' || url.pathname.startsWith('/api')) return;
+
+  if (e.request.mode === 'navigate') {
+    e.respondWith(
+      fetch(e.request).then((res) => {
+        const copy = res.clone();
+        caches.open(CACHE).then((c) => c.put('/index.html', copy));
+        return res;
+      }).catch(() => caches.match('/index.html').then((h) => h || caches.match('/')))
+    );
+    return;
+  }
+
+  e.respondWith(
+    caches.match(e.request).then((hit) => hit || fetch(e.request).then((res) => {
+      if (res.ok && url.origin === location.origin) {
+        const copy = res.clone();
+        caches.open(CACHE).then((c) => c.put(e.request, copy));
+      }
+      return res;
+    }))
+  );
+});