Improve torrent search and ranking algorithm

Enhanced the ranking algorithm to better distinguish complete title matches from partial matches, reducing series confusion. Updated the torrent search modal to allow users to customize the search title for new requests, improving search flexibility. Also refined request lookup to ignore deleted requests.

src/components/requests/InteractiveTorrentSearchModal.tsx

@@ -43,6 +43,7 @@ export function InteractiveTorrentSearchModal({
 
   const [results, setResults] = useState<(TorrentResult & { rank: number; qualityScore?: number })[]>([]);
   const [confirmTorrent, setConfirmTorrent] = useState<TorrentResult | null>(null);
+  const [searchTitle, setSearchTitle] = useState(audiobook.title);
 
   // Determine which mode we're in
   const hasRequestId = !!requestId;
@@ -52,6 +53,12 @@ export function InteractiveTorrentSearchModal({
     ? (searchByRequestError || selectTorrentError)
     : (searchByAudiobookError || requestWithTorrentError);
 
+  // Reset search title when modal opens/closes or audiobook changes
+  React.useEffect(() => {
+    setSearchTitle(audiobook.title);
+    setResults([]);
+  }, [isOpen, audiobook.title]);
+
   // Perform search when modal opens
   React.useEffect(() => {
     if (isOpen && results.length === 0) {
@@ -60,14 +67,17 @@ export function InteractiveTorrentSearchModal({
   }, [isOpen]);
 
   const performSearch = async () => {
+    // Clear existing results while searching
+    setResults([]);
+
     try {
       let data;
       if (hasRequestId) {
-        // Existing flow: search by requestId
+        // Existing flow: search by requestId (cannot customize search term)
         data = await searchByRequestId(requestId);
       } else {
-        // New flow: search by audiobook title/author
-        data = await searchByAudiobook(audiobook.title, audiobook.author);
+        // New flow: search by custom title + original author
+        data = await searchByAudiobook(searchTitle, audiobook.author);
       }
       setResults(data || []);
     } catch (err) {
@@ -76,6 +86,12 @@ export function InteractiveTorrentSearchModal({
     }
   };
 
+  const handleSearchKeyPress = (e: React.KeyboardEvent<HTMLInputElement>) => {
+    if (e.key === 'Enter') {
+      performSearch();
+    }
+  };
+
   const handleDownloadClick = (torrent: TorrentResult) => {
     setConfirmTorrent(torrent);
   };
@@ -124,10 +140,42 @@ export function InteractiveTorrentSearchModal({
     <>
       <Modal isOpen={isOpen} onClose={onClose} title="Select Torrent" size="full">
         <div className="space-y-4">
-          {/* Audiobook info */}
+          {/* Search customization */}
           <div className="bg-gray-50 dark:bg-gray-900 p-4 rounded-lg">
-            <h3 className="font-semibold text-gray-900 dark:text-gray-100">{audiobook.title}</h3>
-            <p className="text-sm text-gray-600 dark:text-gray-400">By {audiobook.author}</p>
+            {hasRequestId ? (
+              // Existing request: show static title (cannot customize)
+              <>
+                <h3 className="font-semibold text-gray-900 dark:text-gray-100">{audiobook.title}</h3>
+                <p className="text-sm text-gray-600 dark:text-gray-400">By {audiobook.author}</p>
+              </>
+            ) : (
+              // New search: allow title customization
+              <>
+                <label className="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">
+                  Search Title
+                </label>
+                <div className="flex gap-2">
+                  <input
+                    type="text"
+                    value={searchTitle}
+                    onChange={(e) => setSearchTitle(e.target.value)}
+                    onKeyPress={handleSearchKeyPress}
+                    placeholder="Enter book title to search..."
+                    disabled={isSearching}
+                    className="flex-1 px-3 py-2 border border-gray-300 dark:border-gray-600 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500 bg-white dark:bg-gray-800 text-gray-900 dark:text-gray-100 disabled:opacity-50"
+                  />
+                  <Button
+                    onClick={performSearch}
+                    disabled={isSearching || !searchTitle.trim()}
+                    variant="primary"
+                    size="sm"
+                  >
+                    Search
+                  </Button>
+                </div>
+                <p className="text-sm text-gray-600 dark:text-gray-400 mt-2">By {audiobook.author}</p>
+              </>
+            )}
           </div>
 
           {/* Error message */}