Rich chat messages (reactions, replies, files, images); RSS poll countdown; Speakers' Corner directory page updates

- Chat: extract reactions, quoted replies, file/image data in _normalize_item
- Chat: render emoji reaction pills, reply-quote blocks, inline image previews, file blocks with Accept/Download
- Chat: reply UI (hover → set reply → preview bar above compose → send with quotedItemId)
- Chat: emoji picker strip (6 quick-react emojis) on message hover
- Chat: POST /react and POST /file/{id}/receive and GET /file/{id}/download endpoints
- Chat: file decryption via core.chat_read_file (native libsimplex FFI), served with correct MIME type
- List: RSS bot cards show live next-poll countdown (ticks every second via status API poll_next field)
- Directory: rename SimpleXXX → Speakers' Corner Online Directory throughout
- Directory: add hero banner image, About page link, QR popout, title hyperlink
- Directory: new about.html — Online Safety Act, Digital ID, 65k arrests stat, community rules

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

manager/templates/list.html

@@ -105,6 +105,12 @@
                 onclick="this.textContent='Stopping…'">Stop</button>
       </div>
     </div>
+    {% if tab == 'rss-bots' %}
+    <div style="margin-top:8px;font-size:12px;color:var(--muted);">
+      <i class="fa-solid fa-clock"></i>
+      <span id="poll-{{ p.id }}">{{ '—' if not p.running else 'Loading…' }}</span>
+    </div>
+    {% endif %}
     {% if p.address %}
     <div onclick="event.stopPropagation()" style="margin-top:10px;">{{ ui.linkbox(p.address, 'p' ~ p.id) }}</div>
     {% endif %}
@@ -304,13 +310,42 @@
 </dialog>
 
 <script>
+const _pollNextMap = {};   // profile_id → poll_next epoch (seconds)
+
+function fmtCountdown(secs) {
+  if (secs <= 0) return 'polling now…';
+  const h = Math.floor(secs / 3600);
+  const m = Math.floor((secs % 3600) / 60);
+  const s = Math.floor(secs % 60);
+  if (h > 0) return `in ${h}h ${m}m`;
+  if (m > 0) return `in ${m}m ${s}s`;
+  return `in ${s}s`;
+}
+
+function tickPolls() {
+  const now = Date.now() / 1000;
+  for (const [id, pollNext] of Object.entries(_pollNextMap)) {
+    const el = document.getElementById('poll-' + id);
+    if (!el) continue;
+    el.textContent = pollNext > 0 ? fmtCountdown(pollNext - now) : '—';
+  }
+}
+setInterval(tickPolls, 1000);
+
 function updateStatus(id, event) {
   try {
     const data = JSON.parse(event.detail.xhr.responseText);
     const badge = document.getElementById('status-' + id);
-    if (!badge) return;
-    badge.textContent = data.running ? 'running' : 'stopped';
-    badge.className = 'badge ' + (data.running ? 'badge-green' : 'badge-red');
+    if (badge) {
+      badge.textContent = data.running ? 'running' : 'stopped';
+      badge.className = 'badge ' + (data.running ? 'badge-green' : 'badge-red');
+    }
+    if (data.poll_next !== undefined) {
+      _pollNextMap[id] = data.running ? data.poll_next : 0;
+      const el = document.getElementById('poll-' + id);
+      if (el) el.textContent = data.running && data.poll_next > 0
+        ? fmtCountdown(data.poll_next - Date.now() / 1000) : '—';
+    }
   } catch(e) {}
 }