fix(qbittorrent): add seeds/peers fields (num_seeds/num_leechs), guard empty response (closes #64)

server/clients/QBittorrentClient.js

@@ -104,6 +104,11 @@ class QBittorrentClient extends DownloadClient {
     const response = await this.makeRequest(`/api/v2/sync/maindata?rid=${this.lastRid}`);
     const data = response.data;
 
+    if (!data) {
+      logToFile(`[qBittorrent:${this.name}] Empty response from sync/maindata`);
+      return Array.from(this.torrentMap.values());
+    }
+
     if (data.full_update) {
       // Full refresh: rebuild the entire map
       this.torrentMap.clear();
@@ -249,6 +254,14 @@ class QBittorrentClient extends DownloadClient {
       downloaded: downloadedSize,
       speed: torrent.dlspeed,
       eta: torrent.eta < 0 || torrent.eta === 8640000 ? null : torrent.eta,
+      // Connected peer counts (Issue #64). qBittorrent exposes:
+      //   num_seeds   — connected seeds (peers we have a connection to)
+      //   num_leechs  — connected leechers (peers downloading from us)
+      //   num_complete / num_incomplete — *swarm* totals reported by tracker
+      // We expose the connected counts to stay consistent with what other
+      // clients (e.g. Transmission via peersConnected/peersSendingToUs) report.
+      seeds: torrent.num_seeds ?? 0,
+      peers: torrent.num_leechs ?? 0,
       category: torrent.category || undefined,
       tags: torrent.tags ? torrent.tags.split(',').filter(tag => tag.trim()) : [],
       savePath: torrent.content_path || torrent.save_path || undefined,