Wire the new features into the app: routes, settings, Home card, styles, CI, roadmap; bump the app cache

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

public/settings.js

@@ -86,7 +86,7 @@ function viewSettings(args) {
     <div id="sec-signal"><h2>Signal alerts</h2><p class="sub">How this computer gets your attention when a Signal message arrives (not while you are looking at that chat). Saved on this device only.</p>
     <div class="list"><label class="row" style="cursor:pointer"><span class="grow"><b>Play a sound</b><small>A short chime</small></span><input type="checkbox" id="sga-s"></label>
       <label class="row" style="cursor:pointer"><span class="grow"><b>Desktop notification</b><small id="sga-ns">Pops up even when this tab is in the background</small></span><input type="checkbox" id="sga-n"></label></div>
-    <div class="bar"><button class="btn ghost" id="sga-t">Play test sound</button></div></div>${remindersHtml()}<h2>Install</h2>${installHtml()}</div>
+    <div class="bar"><button class="btn ghost" id="sga-t">Play test sound</button></div></div>${remindersHtml()}<div id="themeset"></div><h2>Your data</h2><p class="sub">A copy of your own tasks, contacts, notes, Bible notes and settings. Sign-in tokens are left out.</p><div class="bar"><a class="btn ghost" href="/api/export" download>Download my data</a></div><h2>Install</h2>${installHtml()}</div>
     <div class="sgroup" data-g="connections"><div id="sec-conn"><h2>Connections</h2><div class="list">
       <div class="row" id="row-sf"><span class="grow"><b>Seafile</b><small id="sfst">${esc(cfg.seafile)} · ${signed ? 'Checking…' : 'signed out'}</small></span></div>
       <div class="row" id="row-plex"><span class="grow"><b>Plex</b><small id="plexst">Checking…</small></span><button class="btn danger" id="plexout" hidden>Sign out</button></div>
@@ -111,7 +111,8 @@ function viewSettings(args) {
     <h2>Health</h2><div class="list" id="health"><div class="row"><span class="grow"><small>Checking…</small></span></div></div>
     <h2>Storage</h2><div class="list" id="stor"><div class="row"><span class="grow"><small>Checking…</small></span></div></div>
     <h2>iPad and Screen Time</h2><p class="sub" style="white-space:normal">Allow the hub on an iPad with Screen Time web limits, without adding every site one by one.</p><div class="bar"><button class="btn ghost" id="stbtn">Set up Screen Time</button></div>
-    <div class="bar"><a class="btn ghost" href="/api/backup" download>Download a backup</a></div><p class="sub">A .tar.gz of everything in /data (accounts, passkeys, tasks, events, settings, Signal history). Keep it private: it holds the session secret and encrypted sign-in tokens. Restore by unpacking it into the data volume.</p>` : ''}
+    <div class="bar"><a class="btn ghost" href="/api/backup" download>Download a backup</a></div><p class="sub">A .tar.gz of everything in /data (accounts, passkeys, tasks, events, settings, Signal history). Keep it private: it holds the session secret and encrypted sign-in tokens. To restore, choose a backup file below.</p>
+    <div class="bar"><label class="btn ghost" for="bkfile" style="cursor:pointer">Restore from a backup…</label><input type="file" id="bkfile" accept=".gz,.tgz,application/gzip" hidden></div><p class="sub" id="bkmsg">Replaces the hub's accounts and data with the backup's. The current data is kept in a .pre-restore folder, and the hub restarts.</p>` : ''}
     ${isAdmin ? `<h2>Activity</h2><div class="list" id="audit"><div class="row"><span class="grow"><small>Loading…</small></span></div></div>` : ''}
     </div></div>`;
   remindersInit();
@@ -200,6 +201,10 @@ function viewSettings(args) {
     el.innerHTML = events.length ? events.slice(0, 40).map(e => `<div class="row"><span class="grow"><b>${esc(e.event)}${e.who ? ' · ' + esc(e.who) : ''}</b><small style="white-space:normal">${esc(new Date(e.t).toLocaleString([], { dateStyle: 'medium', timeStyle: 'short' }))}${e.detail ? ' · ' + esc(e.detail) : ''}${e.ip ? ' · ' + esc(e.ip) : ''}</small></span></div>`).join('') : '<div class="row"><span class="grow"><small>Nothing yet</small></span></div>';
   }).catch(() => { const el = $('#audit'); if (el) el.innerHTML = '<div class="row"><span class="grow"><small>Could not load</small></span></div>'; });
   if (typeof famSettings === 'function') famSettings($('#famset'));
+  if (typeof themeSettings === 'function') themeSettings($('#themeset'));
+  const bkf = $('#bkfile'); if (bkf) bkf.onchange = () => { const f = bkf.files[0]; bkf.value = ''; if (!f) return; confirmSheet('Restore this backup?', `${f.name} replaces the accounts and data on this hub. The current data is kept aside, and the hub restarts.`, 'Restore', async () => {
+    const m = $('#bkmsg'); m.textContent = 'Uploading and restoring…';
+    try { const r = await fetch('/api/backup/restore', { method: 'POST', body: f }), j = await r.json().catch(() => ({})); if (!r.ok) throw new Error(j.error || 'Could not restore'); m.textContent = 'Restored. The hub is restarting; this page reloads in a moment.'; setTimeout(() => location.reload(), 6000); } catch (e) { m.textContent = e.message; toast(e.message); } }); };
   $('#invpk').onclick = async () => {
     try {
       const { code, minutes } = await authPost('/api/auth/invite');