fix: support orphaned *arr queue items and improve download matching reliability (#73)

server/services/DownloadBuilder.js

@@ -72,6 +72,7 @@ async function buildUserDownloads(cacheSnapshot, { username, usernameSanitized,
   // Match all download sources
   const userDownloads = [];
   const seenDownloadKeys = new Set();
+  const matchedArrQueueIds = new Set();
   
   if (sabnzbdQueue.data?.queue?.slots) {
     const sabMatches = await DownloadMatcher.matchSabSlots(sabnzbdQueue.data.queue.slots, context);
@@ -80,6 +81,7 @@ async function buildUserDownloads(cacheSnapshot, { username, usernameSanitized,
       if (!seenDownloadKeys.has(key)) {
         seenDownloadKeys.add(key);
         userDownloads.push(dl);
+        if (dl.arrQueueId) matchedArrQueueIds.add(dl.arrQueueId);
       }
     }
   }
@@ -91,12 +93,24 @@ async function buildUserDownloads(cacheSnapshot, { username, usernameSanitized,
       if (!seenDownloadKeys.has(key)) {
         seenDownloadKeys.add(key);
         userDownloads.push(dl);
+        if (dl.arrQueueId) matchedArrQueueIds.add(dl.arrQueueId);
       }
     }
   }
 
   const torrentMatches = await DownloadMatcher.matchTorrents(qbittorrentTorrents, context);
   for (const dl of torrentMatches) {
+    const key = `${dl.type}:${dl.title}`;
+    if (!seenDownloadKeys.has(key)) {
+      seenDownloadKeys.add(key);
+      userDownloads.push(dl);
+      if (dl.arrQueueId) matchedArrQueueIds.add(dl.arrQueueId);
+    }
+  }
+
+  // Phase 2: Match orphaned records that have no active download client counterpart
+  const orphanedMatches = await DownloadMatcher.matchOrphanedArrRecords(matchedArrQueueIds, context);
+  for (const dl of orphanedMatches) {
     const key = `${dl.type}:${dl.title}`;
     if (!seenDownloadKeys.has(key)) {
       seenDownloadKeys.add(key);