fix(ui): parse getPeerStatuses dict response correctly in CellNetwork

The /api/wireguard/peers/statuses endpoint returns {pubkey: {online,...}}
not {peers: [{public_key,...}]}. The status mapping loop was always
producing an empty statusByKey, making every connected cell show Offline.

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

webui/src/pages/CellNetwork.jsx

@@ -311,9 +311,12 @@ export default function CellNetwork() {
       try {
         const { wireguardAPI } = await import('../services/api');
         const sr = await wireguardAPI.getPeerStatuses();
-        (sr.data?.peers || []).forEach(p => {
-          if (p.public_key) statusByKey[p.public_key] = p;
-        });
+        // API returns {pubkey: {online, last_handshake, ...}} — no .peers wrapper
+        const raw = sr.data || {};
+        const entries = Array.isArray(raw.peers)
+          ? raw.peers.map(p => [p.public_key, p])
+          : Object.entries(raw);
+        entries.forEach(([pk, info]) => { if (pk) statusByKey[pk] = info; });
       } catch {
         // Status enrichment is best-effort; continue without it
       }