Implement user soft-delete and improve search ranking

Adds soft-delete support for local users, including backend, API, and UI changes to allow admins to delete local users while preserving their requests. Updates user queries to exclude deleted users and allows username reuse for deleted accounts. Refines search and ranking logic for torrents: uses title-only queries for broader results, increases max results to 100, applies a minimum score threshold (30/100), and logs detailed ranking breakdowns. Updates the ranking algorithm to prioritize title/author match, adjusts scoring weights, and improves BookDate compatibility with Audiobookshelf by disabling rating-based features when unsupported. Enhances file copy operations for large files, improves metadata tagging, and updates documentation to reflect new search and ranking strategies.
2026-06-02 20:30:10 +00:00 · 2025-12-23 17:34:29 -05:00
parent bb42281dac
commit f043688a71
18 changed files with 630 additions and 176 deletions
@@ -14,10 +14,22 @@ Indexer aggregator for searching multiple torrent/usenet indexers simultaneously
 **GET /indexerstats** - Indexer statistics
 **GET /feed/{indexerId}/api?t=search&cat=3030&limit=100** - RSS feed for specific indexer

-## Search
+## Search Strategy
+
+**Search Query:** Title only (not title + author)
+- Broader search yields more results (e.g., 20 vs 1)
+- Ranking algorithm filters out mismatches using author/narrator
+- Works around indexer limitations with complex queries

 **Extended Search:** Enabled (`extended=1`) - searches title, tags, labels, and metadata fields

+**Result Filtering:**
+- Minimum score threshold: 30/100
+- Filters applied after ranking to remove poor matches
+- maxResults: 100 (increased from 50 for broader search)
+
+**Example:** "Season of Storms" → finds all "Season of Storms" torrents → ranks by author match → filters score < 30
+
 ```typescript
 interface TorrentResult {
  indexer: string;
@@ -53,13 +65,15 @@ interface TorrentResult {

 **Manual Search** (`POST /api/requests/{id}/manual-search`)
 - Triggers automatic search job for requests with status: pending, failed, awaiting_search
- Searches only enabled indexers
- Uses ranking algorithm to select best torrent
+- Searches only enabled indexers (title only, maxResults: 100)
+- Ranks all results, filters scores < 30
+- Selects best torrent from filtered results
 - Updates request status to 'pending'

 **Interactive Search** (`POST /api/requests/{id}/interactive-search`)
 - Returns ranked torrent results for user selection
- Searches only enabled indexers
+- Searches only enabled indexers (title only, maxResults: 100)
+- Ranks all results, filters scores < 30
 - Shows table with: rank, title, size, quality score, seeders, indexer, publish date
 - Available for same statuses as manual search
 - User clicks "Download" button to select specific torrent
@@ -1,29 +1,38 @@
 # Intelligent Ranking Algorithm

-**Status:** ❌ Not Implemented
+**Status:** ✅ Implemented

 Evaluates and scores torrents to automatically select best audiobook download.

 ## Scoring Criteria (100 points max)

-**1. Format Quality (40 pts max)**
- M4B with chapters: 40
- M4B without chapters: 35
- M4A: 25
- MP3: 15
- Other: 5
+**1. Title/Author Match (50 pts max) - MOST IMPORTANT**
+- Title matching: 0-35 pts
+  - Exact substring match → 35 pts
+  - No exact match → fuzzy similarity (partial credit)
+- Author presence: 0-15 pts
+  - Splits authors on delimiters (comma, &, "and", " - ")
+  - Filters out roles ("translator", "narrator")
+  - Proportional credit for partial matches
+- Order-independent, no structure assumptions
+- Ensures correct book is selected over wrong book with better format

-**2. Seeder Count (25 pts max)**
- Formula: `Math.min(25, Math.log10(seeders + 1) * 10)`
- 1 seeder: 0pts, 10 seeders: 10pts, 100 seeders: 20pts, 1000+: 25pts
+**2. Format Quality (25 pts max)**
+- M4B with chapters: 25
+- M4B without chapters: 22
+- M4A: 16
+- MP3: 10
+- Other: 3

-**3. Size Reasonableness (20 pts max)**
+**3. Seeder Count (15 pts max)**
+- Formula: `Math.min(15, Math.log10(seeders + 1) * 6)`
+- 1 seeder: 0pts, 10 seeders: 6pts, 100 seeders: 12pts, 1000+: 15pts
+
+**4. Size Reasonableness (10 pts max)**
 - Expected: 1-2 MB/min (64-128 kbps)
- Deviation from expected → penalty
-
-**4. Title Match Quality (15 pts max)**
- Fuzzy match: title + author (Levenshtein distance)
- Narrator bonus
+- Perfect match: 10 pts
+- Deviation → penalty
+- Unknown duration: 5 pts (neutral)

 ## Interface

@@ -49,6 +49,10 @@ model User {
  bookDateCustomPrompt       String? @map("bookdate_custom_prompt") @db.Text
  bookDateOnboardingComplete Boolean @default(false) @map("bookdate_onboarding_complete")

+  // Soft delete support
+  deletedAt DateTime? @map("deleted_at")
+  deletedBy String?   @map("deleted_by") // Admin user ID who deleted this user
+
  // Relations
  requests                Request[]
  bookDateRecommendations BookDateRecommendation[]
@@ -56,6 +60,7 @@ model User {

  @@index([plexId])
  @@index([role])
+  @@index([deletedAt])
  @@map("users")
 }

@@ -55,6 +55,11 @@ function AdminUsersPageContent() {
    type: 'approve' | 'reject' | null;
    user: PendingUser | null;
  }>({ isOpen: false, type: null, user: null });
+  const [deleteDialog, setDeleteDialog] = useState<{
+    isOpen: boolean;
+    user: User | null;
+  }>({ isOpen: false, user: null });
+  const [deleting, setDeleting] = useState(false);
  const toast = useToast();

  const isLoading = !data && !error;
@@ -130,6 +135,45 @@ function AdminUsersPageContent() {
    }
  };

+  const showDeleteDialog = (user: User) => {
+    setDeleteDialog({ isOpen: true, user });
+  };
+
+  const closeDeleteDialog = () => {
+    if (deleting) return; // Don't close while processing
+    setDeleteDialog({ isOpen: false, user: null });
+  };
+
+  const handleDeleteUser = async () => {
+    if (!deleteDialog.user) return;
+
+    try {
+      setDeleting(true);
+      const response = await fetchJSON(`/api/admin/users/${deleteDialog.user.id}`, {
+        method: 'DELETE',
+      });
+      toast.success(response.message || `User "${deleteDialog.user.plexUsername}" has been deleted`);
+      mutate(); // Refresh users list
+      closeDeleteDialog();
+    } catch (err) {
+      const errorMsg = err instanceof Error ? err.message : 'Failed to delete user';
+      toast.error(errorMsg);
+      console.error(err);
+    } finally {
+      setDeleting(false);
+    }
+  };
+
+  const copyToClipboard = async (text: string, label: string) => {
+    try {
+      await navigator.clipboard.writeText(text);
+      toast.success(`${label} copied to clipboard`);
+    } catch (err) {
+      console.error('Failed to copy to clipboard:', err);
+      toast.error('Failed to copy to clipboard');
+    }
+  };
+
  if (isLoading) {
    return (
      <div className="min-h-screen bg-gray-50 dark:bg-gray-900 p-8">
@@ -289,10 +333,16 @@ function AdminUsersPageContent() {
                          {user.plexUsername}
                        </div>
                        <div
-                          className="text-sm text-gray-500 dark:text-gray-400 cursor-help"
-                          title={`Full ID: ${user.plexId}`}
+                          className="text-sm text-gray-500 dark:text-gray-400 cursor-pointer hover:text-gray-700 dark:hover:text-gray-300 transition-colors"
+                          title={`Click to copy: ${user.plexId}`}
+                          onClick={() => copyToClipboard(user.plexId, 'User ID')}
                        >
-                          ID: {user.plexId.length > 12 ? `${user.plexId.substring(0, 12)}...` : user.plexId}
+                          <span className="inline-flex items-center gap-1">
+                            <svg className="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M8 16H6a2 2 0 01-2-2V6a2 2 0 012-2h8a2 2 0 012 2v2m-6 12h8a2 2 0 002-2v-8a2 2 0 00-2-2h-8a2 2 0 00-2 2v8a2 2 0 002 2z" />
+                            </svg>
+                            ID: {user.plexId.length > 12 ? `${user.plexId.substring(0, 12)}...` : user.plexId}
+                          </span>
                        </div>
                      </div>
                    </div>
@@ -329,31 +379,65 @@ function AdminUsersPageContent() {
                      : 'Never'}
                  </td>
                  <td className="px-6 py-4 whitespace-nowrap text-right text-sm font-medium">
-                    {user.isSetupAdmin ? (
-                      <span className="inline-flex items-center gap-1 text-gray-400 dark:text-gray-600 cursor-not-allowed" title="Setup admin role cannot be changed">
-                        <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 15v2m-6 4h12a2 2 0 002-2v-6a2 2 0 00-2-2H6a2 2 0 00-2 2v6a2 2 0 002 2zm10-10V7a4 4 0 00-8 0v4h8z" />
-                        </svg>
-                        <span>Protected</span>
-                      </span>
-                    ) : user.authProvider === 'oidc' ? (
-                      <span className="inline-flex items-center gap-1 text-gray-400 dark:text-gray-600 cursor-not-allowed" title="OIDC user roles are managed by the identity provider (use admin role mapping in settings)">
-                        <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
-                        </svg>
-                        <span>OIDC Managed</span>
-                      </span>
-                    ) : (
-                      <button
-                        onClick={() => showEditDialog(user)}
-                        className="inline-flex items-center gap-1 text-blue-600 hover:text-blue-900 dark:text-blue-400 dark:hover:text-blue-300"
-                      >
-                        <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z" />
-                        </svg>
-                        <span>Edit Role</span>
-                      </button>
-                    )}
+                    <div className="flex items-center justify-end gap-3">
+                      {user.isSetupAdmin ? (
+                        <span className="inline-flex items-center gap-1 text-gray-400 dark:text-gray-600 cursor-not-allowed" title="Setup admin role cannot be changed">
+                          <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 15v2m-6 4h12a2 2 0 002-2v-6a2 2 0 00-2-2H6a2 2 0 00-2 2v6a2 2 0 002 2zm10-10V7a4 4 0 00-8 0v4h8z" />
+                          </svg>
+                          <span>Protected</span>
+                        </span>
+                      ) : user.authProvider === 'oidc' ? (
+                        <span className="inline-flex items-center gap-1 text-gray-400 dark:text-gray-600 cursor-not-allowed" title="OIDC user roles are managed by the identity provider (use admin role mapping in settings)">
+                          <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
+                          </svg>
+                          <span>OIDC Managed</span>
+                        </span>
+                      ) : user.authProvider === 'plex' ? (
+                        <button
+                          onClick={() => showEditDialog(user)}
+                          className="inline-flex items-center gap-1 text-blue-600 hover:text-blue-900 dark:text-blue-400 dark:hover:text-blue-300"
+                        >
+                          <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z" />
+                          </svg>
+                          <span>Edit Role</span>
+                        </button>
+                      ) : user.authProvider === 'local' ? (
+                        <>
+                          <button
+                            onClick={() => showEditDialog(user)}
+                            className="inline-flex items-center gap-1 text-blue-600 hover:text-blue-900 dark:text-blue-400 dark:hover:text-blue-300"
+                          >
+                            <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z" />
+                            </svg>
+                            <span>Edit Role</span>
+                          </button>
+                          <button
+                            onClick={() => showDeleteDialog(user)}
+                            className="inline-flex items-center gap-1 text-red-600 hover:text-red-900 dark:text-red-400 dark:hover:text-red-300"
+                            title="Delete user and all their requests"
+                          >
+                            <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16" />
+                            </svg>
+                            <span>Delete</span>
+                          </button>
+                        </>
+                      ) : (
+                        <button
+                          onClick={() => showEditDialog(user)}
+                          className="inline-flex items-center gap-1 text-blue-600 hover:text-blue-900 dark:text-blue-400 dark:hover:text-blue-300"
+                        >
+                          <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z" />
+                          </svg>
+                          <span>Edit Role</span>
+                        </button>
+                      )}
+                    </div>
                  </td>
                </tr>
              ))}
@@ -370,15 +454,16 @@ function AdminUsersPageContent() {
        {/* Info Box */}
        <div className="mt-6 bg-blue-50 dark:bg-blue-900/20 border border-blue-200 dark:border-blue-800 rounded-lg p-4">
          <h3 className="text-sm font-medium text-blue-800 dark:text-blue-200 mb-2">
-            About User Roles
+            About User Management
          </h3>
          <ul className="text-sm text-blue-700 dark:text-blue-300 space-y-1">
            <li>• <strong>User:</strong> Can request audiobooks, view own requests, and search the catalog</li>
            <li>• <strong>Admin:</strong> Full system access including settings, user management, and all requests</li>
-            <li>• <strong>Setup Admin:</strong> The initial admin account created during setup - this account's role is protected and cannot be changed</li>
-            <li>• <strong>OIDC Users:</strong> Role management is handled by the identity provider - use admin role mapping in OIDC settings</li>
-            <li>• <strong>Local Users:</strong> Can be freely assigned user or admin roles (except setup admin)</li>
-            <li>• You cannot change your own role for security reasons</li>
+            <li>• <strong>Setup Admin:</strong> The initial admin account created during setup - this account is protected and cannot be changed or deleted</li>
+            <li>• <strong>OIDC Users:</strong> Role management is handled by the identity provider - use admin role mapping in OIDC settings. Cannot be deleted as access is managed externally.</li>
+            <li>• <strong>Plex Users:</strong> Can have their roles changed, but cannot be deleted as access is managed by Plex.</li>
+            <li>• <strong>Local Users:</strong> Can be freely assigned user or admin roles (except setup admin). Can be deleted (their requests are preserved for historical records).</li>
+            <li>• You cannot change your own role or delete yourself for security reasons</li>
          </ul>
        </div>

@@ -492,6 +577,23 @@ function AdminUsersPageContent() {
          isLoading={processingUserId !== null}
          variant={confirmDialog.type === 'reject' ? 'danger' : 'primary'}
        />
+
+        {/* Delete User Dialog */}
+        <ConfirmModal
+          isOpen={deleteDialog.isOpen}
+          onClose={closeDeleteDialog}
+          onConfirm={handleDeleteUser}
+          title="Delete User"
+          message={
+            deleteDialog.user
+              ? `Are you sure you want to delete "${deleteDialog.user.plexUsername}"? The user will be permanently deleted, but their ${deleteDialog.user._count.requests} request(s) will be preserved for historical records. This action cannot be undone.`
+              : ''
+          }
+          confirmText="Delete User"
+          cancelText="Cancel"
+          isLoading={deleting}
+          variant="danger"
+        />
      </div>
    </div>
  );
@@ -34,13 +34,14 @@ export async function PUT(
          );
        }

-        // Check if user is the setup admin or OIDC user
+        // Check if user is the setup admin, OIDC user, or deleted
        const targetUser = await prisma.user.findUnique({
          where: { id },
          select: {
            isSetupAdmin: true,
            authProvider: true,
            plexUsername: true,
+            deletedAt: true,
          },
        });

@@ -51,6 +52,14 @@ export async function PUT(
          );
        }

+        // Prevent changing deleted users
+        if (targetUser.deletedAt) {
+          return NextResponse.json(
+            { error: 'Cannot modify a deleted user' },
+            { status: 403 }
+          );
+        }
+
        // Prevent changing setup admin role
        if (targetUser.isSetupAdmin && role !== 'admin') {
          return NextResponse.json(
@@ -89,3 +98,98 @@ export async function PUT(
    });
  });
 }
+
+export async function DELETE(
+  request: NextRequest,
+  { params }: { params: Promise<{ id: string }> }
+) {
+  return requireAuth(request, async (req: AuthenticatedRequest) => {
+    return requireAdmin(req, async () => {
+      try {
+        const { id } = await params;
+
+        // Prevent user from deleting themselves
+        if (req.user && id === req.user.sub) {
+          return NextResponse.json(
+            { error: 'You cannot delete your own account' },
+            { status: 403 }
+          );
+        }
+
+        // Check if user exists and get their details
+        const targetUser = await prisma.user.findUnique({
+          where: { id },
+          select: {
+            id: true,
+            plexUsername: true,
+            isSetupAdmin: true,
+            authProvider: true,
+            deletedAt: true,
+            _count: {
+              select: { requests: true },
+            },
+          },
+        });
+
+        if (!targetUser) {
+          return NextResponse.json(
+            { error: 'User not found' },
+            { status: 404 }
+          );
+        }
+
+        // Check if user is already deleted
+        if (targetUser.deletedAt) {
+          return NextResponse.json(
+            { error: 'User has already been deleted' },
+            { status: 400 }
+          );
+        }
+
+        // Prevent deleting setup admin
+        if (targetUser.isSetupAdmin) {
+          return NextResponse.json(
+            { error: 'Cannot delete the setup admin account. This account is protected.' },
+            { status: 403 }
+          );
+        }
+
+        // Only allow deleting local users (manual registration)
+        if (targetUser.authProvider !== 'local') {
+          const providerName = targetUser.authProvider === 'plex' ? 'Plex' :
+                               targetUser.authProvider === 'oidc' ? 'OIDC' :
+                               targetUser.authProvider || 'external';
+          return NextResponse.json(
+            {
+              error: `Cannot delete ${providerName} users. User access is managed by ${providerName}.`
+            },
+            { status: 403 }
+          );
+        }
+
+        // Soft-delete user (preserves their requests and history)
+        // Append timestamp to plexId to free it up for reuse (allows username reuse)
+        const timestamp = Date.now();
+        await prisma.user.update({
+          where: { id },
+          data: {
+            deletedAt: new Date(),
+            deletedBy: req.user?.sub || null,
+            plexId: `local-${targetUser.plexUsername}-deleted-${timestamp}`,
+          },
+        });
+
+        return NextResponse.json({
+          success: true,
+          message: `User "${targetUser.plexUsername}" has been deleted. Their ${targetUser._count.requests} request(s) have been preserved.`
+        });
+      } catch (error) {
+        console.error('[Admin] Failed to delete user:', error);
+        return NextResponse.json(
+          { error: 'Failed to delete user' },
+          { status: 500 }
+        );
+      }
+    });
+  });
+}
@@ -13,7 +13,8 @@ export async function GET(request: NextRequest) {
      try {
        const pendingUsers = await prisma.user.findMany({
          where: {
-            registrationStatus: 'pending_approval'
+            registrationStatus: 'pending_approval',
+            deletedAt: null, // Exclude soft-deleted users
          },
          select: {
            id: true,
@@ -12,6 +12,9 @@ export async function GET(request: NextRequest) {
    return requireAdmin(req, async () => {
      try {
        const users = await prisma.user.findMany({
+          where: {
+            deletedAt: null, // Exclude soft-deleted users
+          },
          select: {
            id: true,
            plexId: true,
@@ -57,14 +57,17 @@ export async function POST(request: NextRequest) {

      // Search Prowlarr for torrents - ONLY enabled indexers
      const prowlarr = await getProwlarrService();
-      const searchQuery = `${title} ${author}`;
+      const searchQuery = title; // Title only - cast wide net

      console.log(`[AudiobookSearch] Searching ${enabledIndexerIds.length} enabled indexers for: ${searchQuery}`);

      const results = await prowlarr.search(searchQuery, {
        indexerIds: enabledIndexerIds,
+        maxResults: 100, // Increased limit for broader search
      });

+      console.log(`[AudiobookSearch] Found ${results.length} raw results for "${title}" by ${author}`);
+
      if (results.length === 0) {
        return NextResponse.json({
          success: true,
@@ -76,18 +79,49 @@ export async function POST(request: NextRequest) {
      // Rank torrents using the ranking algorithm
      const rankedResults = rankTorrents(results, { title, author });

+      // Filter out results below minimum score threshold (30/100)
+      const filteredResults = rankedResults.filter(result => result.score >= 30);
+
+      console.log(`[AudiobookSearch] Ranked ${rankedResults.length} results, ${filteredResults.length} above threshold (30/100)`);
+
+      // Log top 3 results with detailed score breakdown for debugging
+      const top3 = filteredResults.slice(0, 3);
+      if (top3.length > 0) {
+        console.log(`[AudiobookSearch] ==================== RANKING DEBUG ====================`);
+        console.log(`[AudiobookSearch] Requested Title: "${title}"`);
+        console.log(`[AudiobookSearch] Requested Author: "${author}"`);
+        console.log(`[AudiobookSearch] Top ${top3.length} results (out of ${filteredResults.length} above threshold):`);
+        console.log(`[AudiobookSearch] --------------------------------------------------------`);
+        top3.forEach((result, index) => {
+          console.log(`[AudiobookSearch] ${index + 1}. "${result.title}"`);
+          console.log(`[AudiobookSearch]    Indexer: ${result.indexer}`);
+          console.log(`[AudiobookSearch]    Total Score: ${result.score.toFixed(1)}/100`);
+          console.log(`[AudiobookSearch]    - Title/Author Match: ${result.breakdown.matchScore.toFixed(1)}/50`);
+          console.log(`[AudiobookSearch]    - Format Quality: ${result.breakdown.formatScore.toFixed(1)}/25 (${result.format || 'unknown'})`);
+          console.log(`[AudiobookSearch]    - Seeder Count: ${result.breakdown.seederScore.toFixed(1)}/15 (${result.seeders} seeders)`);
+          console.log(`[AudiobookSearch]    - Size Score: ${result.breakdown.sizeScore.toFixed(1)}/10 (${(result.size / (1024 ** 3)).toFixed(2)} GB)`);
+          if (result.breakdown.notes.length > 0) {
+            console.log(`[AudiobookSearch]    Notes: ${result.breakdown.notes.join(', ')}`);
+          }
+          if (index < top3.length - 1) {
+            console.log(`[AudiobookSearch] --------------------------------------------------------`);
+          }
+        });
+        console.log(`[AudiobookSearch] ========================================================`);
+      }
+
      // Add rank position to each result
-      const resultsWithRank = rankedResults.map((result, index) => ({
+      const resultsWithRank = filteredResults.map((result, index) => ({
        ...result,
        rank: index + 1,
      }));

-      console.log(`[AudiobookSearch] Found ${resultsWithRank.length} results for "${title}" by ${author}`);
-
      return NextResponse.json({
        success: true,
        results: resultsWithRank,
-        message: `Found ${resultsWithRank.length} torrents`,
+        message: filteredResults.length > 0
+          ? `Found ${filteredResults.length} quality matches`
+          : 'No quality matches found',
      });
    } catch (error) {
      console.error('Failed to search for torrents:', error);
@@ -6,6 +6,7 @@
 import { NextRequest, NextResponse } from 'next/server';
 import { requireAuth, AuthenticatedRequest } from '@/lib/middleware/auth';
 import { prisma } from '@/lib/db';
+import { getConfigService } from '@/lib/services/config.service';

 /**
 * GET /api/bookdate/preferences
@@ -32,10 +33,24 @@ async function getPreferences(req: AuthenticatedRequest) {
      );
    }

+    // Add backend capability detection
+    const configService = getConfigService();
+    const backendMode = await configService.getBackendMode();
+    const supportsRatings = backendMode === 'plex';
+
+    // Override 'rated' scope if backend doesn't support it
+    let effectiveScope = user.bookDateLibraryScope || 'full';
+    if (!supportsRatings && effectiveScope === 'rated') {
+      effectiveScope = 'full';
+    }
+
    return NextResponse.json({
-      libraryScope: user.bookDateLibraryScope || 'full',
+      libraryScope: effectiveScope,
      customPrompt: user.bookDateCustomPrompt || '', // Always return empty string for UI
      onboardingComplete: user.bookDateOnboardingComplete || false,
+      backendCapabilities: {
+        supportsRatings,
+      },
    });

  } catch (error: any) {
@@ -67,6 +82,18 @@ async function updatePreferences(req: AuthenticatedRequest) {
      );
    }

+    // Add validation for rating support
+    const configService = getConfigService();
+    const backendMode = await configService.getBackendMode();
+    const supportsRatings = backendMode === 'plex';
+
+    if (libraryScope === 'rated' && !supportsRatings) {
+      return NextResponse.json(
+        { error: 'Your backend does not support ratings. Please select "Full Library".' },
+        { status: 400 }
+      );
+    }
+
    // Validate custom prompt length (only if provided and not empty)
    if (customPrompt && typeof customPrompt === 'string' && customPrompt.trim() && customPrompt.length > 1000) {
      return NextResponse.json(
@@ -74,14 +74,17 @@ export async function POST(

      // Search Prowlarr for torrents - ONLY enabled indexers
      const prowlarr = await getProwlarrService();
-      const searchQuery = `${requestRecord.audiobook.title} ${requestRecord.audiobook.author}`;
+      const searchQuery = requestRecord.audiobook.title; // Title only - cast wide net

      console.log(`[InteractiveSearch] Searching ${enabledIndexerIds.length} enabled indexers for: ${searchQuery}`);

      const results = await prowlarr.search(searchQuery, {
        indexerIds: enabledIndexerIds,
+        maxResults: 100, // Increased limit for broader search
      });

+      console.log(`[InteractiveSearch] Found ${results.length} raw results for request ${id}`);
+
      if (results.length === 0) {
        return NextResponse.json({
          success: true,
@@ -96,18 +99,49 @@ export async function POST(
        author: requestRecord.audiobook.author,
      });

+      // Filter out results below minimum score threshold (30/100)
+      const filteredResults = rankedResults.filter(result => result.score >= 30);
+
+      console.log(`[InteractiveSearch] Ranked ${rankedResults.length} results, ${filteredResults.length} above threshold (30/100)`);
+
+      // Log top 3 results with detailed score breakdown for debugging
+      const top3 = filteredResults.slice(0, 3);
+      if (top3.length > 0) {
+        console.log(`[InteractiveSearch] ==================== RANKING DEBUG ====================`);
+        console.log(`[InteractiveSearch] Requested Title: "${requestRecord.audiobook.title}"`);
+        console.log(`[InteractiveSearch] Requested Author: "${requestRecord.audiobook.author}"`);
+        console.log(`[InteractiveSearch] Top ${top3.length} results (out of ${filteredResults.length} above threshold):`);
+        console.log(`[InteractiveSearch] --------------------------------------------------------`);
+        top3.forEach((result, index) => {
+          console.log(`[InteractiveSearch] ${index + 1}. "${result.title}"`);
+          console.log(`[InteractiveSearch]    Indexer: ${result.indexer}`);
+          console.log(`[InteractiveSearch]    Total Score: ${result.score.toFixed(1)}/100`);
+          console.log(`[InteractiveSearch]    - Title/Author Match: ${result.breakdown.matchScore.toFixed(1)}/50`);
+          console.log(`[InteractiveSearch]    - Format Quality: ${result.breakdown.formatScore.toFixed(1)}/25 (${result.format || 'unknown'})`);
+          console.log(`[InteractiveSearch]    - Seeder Count: ${result.breakdown.seederScore.toFixed(1)}/15 (${result.seeders} seeders)`);
+          console.log(`[InteractiveSearch]    - Size Score: ${result.breakdown.sizeScore.toFixed(1)}/10 (${(result.size / (1024 ** 3)).toFixed(2)} GB)`);
+          if (result.breakdown.notes.length > 0) {
+            console.log(`[InteractiveSearch]    Notes: ${result.breakdown.notes.join(', ')}`);
+          }
+          if (index < top3.length - 1) {
+            console.log(`[InteractiveSearch] --------------------------------------------------------`);
+          }
+        });
+        console.log(`[InteractiveSearch] ========================================================`);
+      }
+
      // Add rank position to each result
-      const resultsWithRank = rankedResults.map((result, index) => ({
+      const resultsWithRank = filteredResults.map((result, index) => ({
        ...result,
        rank: index + 1,
      }));

-      console.log(`[InteractiveSearch] Found ${resultsWithRank.length} results for request ${id}`);
-
      return NextResponse.json({
        success: true,
        results: resultsWithRank,
-        message: `Found ${resultsWithRank.length} torrents`,
+        message: filteredResults.length > 0
+          ? `Found ${filteredResults.length} quality matches`
+          : 'No quality matches found',
      });
    } catch (error) {
      console.error('Failed to perform interactive search:', error);
@@ -21,6 +21,11 @@ export function SettingsWidget({ isOpen, onClose, isOnboarding = false, onOnboar
  const [saving, setSaving] = useState(false);
  const [error, setError] = useState<string | null>(null);
  const [successMessage, setSuccessMessage] = useState<string | null>(null);
+  const [backendCapabilities, setBackendCapabilities] = useState<{
+    supportsRatings: boolean;
+  }>({
+    supportsRatings: true, // Default assume Plex
+  });

  // Load current preferences
  useEffect(() => {
@@ -48,6 +53,7 @@ export function SettingsWidget({ isOpen, onClose, isOnboarding = false, onOnboar
      const data = await response.json();
      setLibraryScope(data.libraryScope || 'full');
      setCustomPrompt(data.customPrompt || '');
+      setBackendCapabilities(data.backendCapabilities || { supportsRatings: true });
    } catch (error: any) {
      console.error('Load preferences error:', error);
      setError(error.message || 'Failed to load preferences');
@@ -186,24 +192,34 @@ export function SettingsWidget({ isOpen, onClose, isOnboarding = false, onOnboar
                    </div>
                  </label>

-                  <label className={`flex items-start p-4 border-2 rounded-lg cursor-pointer transition-all hover:bg-gray-50 dark:hover:bg-gray-700/50 ${libraryScope === 'rated' ? 'border-blue-500 bg-blue-50 dark:bg-blue-900/20' : 'border-gray-200 dark:border-gray-600'}`}>
-                    <input
-                      type="radio"
-                      name="libraryScope"
-                      value="rated"
-                      checked={libraryScope === 'rated'}
-                      onChange={(e) => setLibraryScope(e.target.value as 'full' | 'rated')}
-                      className="mt-1 h-4 w-4 text-blue-600 focus:ring-blue-500"
-                    />
-                    <div className="ml-3 flex-1">
-                      <div className="font-medium text-gray-900 dark:text-white">
-                        Rated Books Only
-                      </div>
-                      <div className="text-sm text-gray-500 dark:text-gray-400 mt-1">
-                        Only consider books you've rated for recommendations
+                  {/* Show "Rated Books Only" only if backend supports it */}
+                  {backendCapabilities.supportsRatings && (
+                    <label className={`flex items-start p-4 border-2 rounded-lg cursor-pointer transition-all hover:bg-gray-50 dark:hover:bg-gray-700/50 ${libraryScope === 'rated' ? 'border-blue-500 bg-blue-50 dark:bg-blue-900/20' : 'border-gray-200 dark:border-gray-600'}`}>
+                      <input
+                        type="radio"
+                        name="libraryScope"
+                        value="rated"
+                        checked={libraryScope === 'rated'}
+                        onChange={(e) => setLibraryScope(e.target.value as 'full' | 'rated')}
+                        className="mt-1 h-4 w-4 text-blue-600 focus:ring-blue-500"
+                      />
+                      <div className="ml-3 flex-1">
+                        <div className="font-medium text-gray-900 dark:text-white">
+                          Rated Books Only
+                        </div>
+                        <div className="text-sm text-gray-500 dark:text-gray-400 mt-1">
+                          Only consider books you've rated for recommendations
+                        </div>
                      </div>
+                    </label>
+                  )}
+
+                  {/* Show info message if ratings not supported */}
+                  {!backendCapabilities.supportsRatings && (
+                    <div className="text-sm text-gray-600 dark:text-gray-400 mt-2 p-3 bg-gray-50 dark:bg-gray-800 rounded-lg">
+                      Note: Your backend does not support user ratings. Only "Full Library" scope is available.
                    </div>
-                  </label>
+                  )}
                </div>
              </div>

@@ -192,8 +192,16 @@ export function InteractiveTorrentSearchModal({
                          {result.rank}
                        </td>
                        <td className="px-3 py-3 text-sm text-gray-900 dark:text-gray-100">
-                          <div className="max-w-xs lg:max-w-md truncate" title={result.title}>
-                            {result.title}
+                          <div className="max-w-xs lg:max-w-md truncate">
+                            <a
+                              href={result.guid}
+                              target="_blank"
+                              rel="noopener noreferrer"
+                              className="text-blue-600 dark:text-blue-400 hover:text-blue-800 dark:hover:text-blue-300 hover:underline"
+                              title={result.title}
+                            >
+                              {result.title}
+                            </a>
                          </div>
                          <div className="flex gap-2 mt-1 flex-wrap">
                            {result.format && (
@@ -237,41 +237,57 @@ export async function getUserLibraryBooks(
  scope: 'full' | 'listened' | 'rated'
 ): Promise<LibraryBook[]> {
  try {
-    // Get user's Plex library configuration
    const configService = getConfigService();
-    const plexConfig = await configService.getPlexConfig();
+    const backendMode = await configService.getBackendMode();

-    if (!plexConfig.libraryId) {
-      console.warn('[BookDate] No Plex library ID configured');
-      return [];
+    // Early validation: audiobookshelf doesn't support ratings
+    if (backendMode === 'audiobookshelf' && scope === 'rated') {
+      console.warn('[BookDate] Audiobookshelf does not support ratings, falling back to full library');
+      scope = 'full';
    }

-    const plexLibraryId = plexConfig.libraryId;
+    // Get library ID based on backend mode
+    let libraryId: string;
+    if (backendMode === 'audiobookshelf') {
+      const absLibraryId = await configService.get('audiobookshelf.library_id');
+      if (!absLibraryId) {
+        console.warn('[BookDate] No Audiobookshelf library ID configured');
+        return [];
+      }
+      libraryId = absLibraryId;
+    } else {
+      // Plex mode
+      const plexConfig = await configService.getPlexConfig();
+      if (!plexConfig.libraryId) {
+        console.warn('[BookDate] No Plex library ID configured');
+        return [];
+      }
+      libraryId = plexConfig.libraryId;
+    }

-    // Check user type to determine query strategy for 'rated' scope
+    // Check user type for local admin detection (Plex-specific logic)
    const user = await prisma.user.findUnique({
      where: { id: userId },
      select: { plexId: true },
    });
-
    const isLocalAdmin = user?.plexId.startsWith('local-') ?? false;

-    // Build query filters based on scope and user type
-    let whereClause: any = { plexLibraryId };
+    // Build query filters
+    let whereClause: any = { plexLibraryId: libraryId };
    let takeLimit = 40;

-    if (scope === 'rated') {
+    // Apply rating filter only for Plex backend with rated scope
+    if (backendMode === 'plex' && scope === 'rated') {
      if (isLocalAdmin) {
-        // Local admin: Filter by cached ratings (these are their ratings)
+        // Local admin: Use cached ratings from system token
        whereClause.userRating = { not: null };
      } else {
-        // Plex-authenticated: Fetch more books to ensure we get 40 rated ones
-        // Don't filter by cached ratings - user's ratings may differ from system token
+        // OAuth user: Fetch more, filter after user rating enrichment
        takeLimit = 100;
      }
    }

-    // Query Plex library from database (cached structure, includes system token's cached ratings)
+    // Query library from database (same table for both backends)
    let cachedBooks = await prisma.plexLibrary.findMany({
      where: whereClause,
      orderBy: {
@@ -284,22 +300,32 @@ export async function getUserLibraryBooks(
        narrator: true,
        plexGuid: true,
        plexRatingKey: true,
-        userRating: true, // System token's cached ratings from scan
+        userRating: true,
      },
    });

-    // Enrich with user's personal ratings from Plex
-    const enrichedBooks = await enrichWithUserRatings(userId, cachedBooks);
+    // For Plex: Enrich with user's personal ratings
+    // For Audiobookshelf: Skip enrichment (no rating support)
+    if (backendMode === 'plex') {
+      const enrichedBooks = await enrichWithUserRatings(userId, cachedBooks);

-    // If scope is 'rated', filter to only books the user has actually rated
-    if (scope === 'rated') {
-      const ratedBooks = enrichedBooks.filter(book => book.rating != null);
-      // Limit to 40 for Plex users (local admin already limited in query)
-      return isLocalAdmin ? ratedBooks : ratedBooks.slice(0, 40);
+      // Filter to rated books if scope is 'rated'
+      if (scope === 'rated') {
+        const ratedBooks = enrichedBooks.filter(book => book.rating != null);
+        return isLocalAdmin ? ratedBooks : ratedBooks.slice(0, 40);
+      }
+
+      return enrichedBooks;
+    } else {
+      // Audiobookshelf: Map to LibraryBook without ratings
+      return cachedBooks.map(book => ({
+        title: book.title,
+        author: book.author,
+        narrator: book.narrator || undefined,
+        rating: undefined, // ABS doesn't support ratings
+      }));
    }

-    return enrichedBooks;
-
  } catch (error) {
    console.error('[BookDate] Error fetching library books:', error);
    return [];
@@ -52,8 +52,8 @@ export async function processSearchIndexers(payload: SearchIndexersPayload): Pro
    // Get Prowlarr service
    const prowlarr = await getProwlarrService();

-    // Build search query (title + author for better results)
-    const searchQuery = `${audiobook.title} ${audiobook.author}`;
+    // Build search query (title only - cast wide net, let ranking filter)
+    const searchQuery = audiobook.title;

    await logger?.info(`Searching for: "${searchQuery}"`);

@@ -61,11 +61,11 @@ export async function processSearchIndexers(payload: SearchIndexersPayload): Pro
    const searchResults = await prowlarr.search(searchQuery, {
      category: 3030, // Audiobooks
      minSeeders: 1, // Only torrents with at least 1 seeder
-      maxResults: 50, // Limit results
+      maxResults: 100, // Increased limit for broader search
      indexerIds: enabledIndexerIds, // Filter by enabled indexers
    });

-    await logger?.info(`Found ${searchResults.length} results`);
+    await logger?.info(`Found ${searchResults.length} raw results`);

    if (searchResults.length === 0) {
      // No results found - queue for re-search instead of failing
@@ -98,22 +98,56 @@ export async function processSearchIndexers(payload: SearchIndexersPayload): Pro
      durationMinutes: undefined, // We don't have duration from Audible
    });

-    await logger?.info(`Ranked ${rankedResults.length} results`);
+    // Filter out results below minimum score threshold (30/100)
+    const filteredResults = rankedResults.filter(result => result.score >= 30);
+
+    await logger?.info(`Ranked ${rankedResults.length} results, ${filteredResults.length} above threshold (30/100)`);
+
+    if (filteredResults.length === 0) {
+      // No quality results found - queue for re-search instead of failing
+      await logger?.warn(`No quality matches found for request ${requestId} (all below 30/100), marking as awaiting_search`);
+
+      await prisma.request.update({
+        where: { id: requestId },
+        data: {
+          status: 'awaiting_search',
+          errorMessage: 'No quality matches found. Will retry automatically.',
+          lastSearchAt: new Date(),
+          updatedAt: new Date(),
+        },
+      });
+
+      return {
+        success: false,
+        message: 'No quality matches found, queued for re-search',
+        requestId,
+      };
+    }

    // Select best result
-    const bestResult = rankedResults[0];
+    const bestResult = filteredResults[0];

-    // Log top 3 results
-    const top3 = rankedResults.slice(0, 3).map((r, i) => ({
-      rank: i + 1,
-      title: r.title,
-      score: r.score,
-      breakdown: r.breakdown,
-    }));
-
-    await logger?.info(`Best result: ${bestResult.title} (score: ${bestResult.score})`, {
-      top3Results: top3,
-    });
+    // Log top 3 results with detailed breakdown
+    const top3 = filteredResults.slice(0, 3);
+    await logger?.info(`==================== RANKING DEBUG ====================`);
+    await logger?.info(`Requested Title: "${audiobook.title}"`);
+    await logger?.info(`Requested Author: "${audiobook.author}"`);
+    await logger?.info(`Top ${top3.length} results (out of ${filteredResults.length} above threshold):`);
+    await logger?.info(`--------------------------------------------------------`);
+    for (let i = 0; i < top3.length; i++) {
+      const result = top3[i];
+      await logger?.info(`${i + 1}. "${result.title}"`);
+      await logger?.info(`   Indexer: ${result.indexer}`);
+      await logger?.info(`   Total: ${result.score.toFixed(1)}/100 | Match: ${result.breakdown.matchScore.toFixed(1)}/50 | Format: ${result.breakdown.formatScore.toFixed(1)}/25 | Seeders: ${result.breakdown.seederScore.toFixed(1)}/15 | Size: ${result.breakdown.sizeScore.toFixed(1)}/10`);
+      if (result.breakdown.notes.length > 0) {
+        await logger?.info(`   Notes: ${result.breakdown.notes.join(', ')}`);
+      }
+      if (i < top3.length - 1) {
+        await logger?.info(`--------------------------------------------------------`);
+      }
+    }
+    await logger?.info(`========================================================`);
+    await logger?.info(`Selected best result: ${bestResult.title} (score: ${bestResult.score.toFixed(1)}/100)`);

    // Trigger download job with best result
    const jobQueue = getJobQueueService();
@@ -125,9 +159,9 @@ export async function processSearchIndexers(payload: SearchIndexersPayload): Pro

    return {
      success: true,
-      message: `Found ${searchResults.length} results, selected best torrent`,
+      message: `Found ${filteredResults.length} quality matches, selected best torrent`,
      requestId,
-      resultsCount: searchResults.length,
+      resultsCount: filteredResults.length,
      selectedTorrent: {
        title: bestResult.title,
        score: bestResult.score,
@@ -51,11 +51,12 @@ export class LocalAuthProvider implements IAuthProvider {
        return { success: false, error: 'Username and password required' };
      }

-      // Find user
+      // Find user (exclude soft-deleted users)
      const user = await prisma.user.findFirst({
        where: {
          plexUsername: username,
          authProvider: 'local',
+          deletedAt: null, // Exclude soft-deleted users
        },
      });

@@ -155,11 +156,12 @@ export class LocalAuthProvider implements IAuthProvider {
        return { success: false, error: 'Registration is disabled' };
      }

-      // Check username uniqueness
+      // Check username uniqueness (only among non-deleted users)
      const existing = await prisma.user.findFirst({
        where: {
          plexUsername: username,
          authProvider: 'local',
+          deletedAt: null, // Allow reuse of usernames from deleted accounts
        },
      });

@@ -275,6 +277,11 @@ export class LocalAuthProvider implements IAuthProvider {
        return false;
      }

+      // Reject soft-deleted users
+      if (user.deletedAt) {
+        return false;
+      }
+
      if (user.registrationStatus === 'pending_approval' || user.registrationStatus === 'rejected') {
        return false;
      }
@@ -202,10 +202,10 @@ export class FileOrganizer {

        // Copy file (do NOT delete original - needed for seeding)
        try {
-          // Read source file (either tagged version or original)
-          const fileData = await fs.readFile(sourcePath);
-          // Write to target with explicit permissions
-          await fs.writeFile(targetFilePath, fileData, { mode: 0o644 });
+          // Copy file using streaming (handles large files >2GB)
+          await fs.copyFile(sourcePath, targetFilePath);
+          // Set explicit permissions after copy
+          await fs.chmod(targetFilePath, 0o644);

          result.audioFiles.push(targetFilePath);
          result.filesMovedCount++;
@@ -237,8 +237,8 @@ export class FileOrganizer {

        try {
          // Copy cover art (do NOT delete original)
-          const coverData = await fs.readFile(sourcePath);
-          await fs.writeFile(targetCoverPath, coverData, { mode: 0o644 });
+          await fs.copyFile(sourcePath, targetCoverPath);
+          await fs.chmod(targetCoverPath, 0o644);
          result.coverArtFile = targetCoverPath;
          result.filesMovedCount++;
          await logger?.info(`Copied cover art`);
@@ -406,8 +406,8 @@ export class FileOrganizer {
        const cachedPath = path.join('/app/cache/thumbnails', filename);

        // Copy from local cache instead of downloading
-        const coverData = await fs.readFile(cachedPath);
-        await fs.writeFile(targetPath, coverData, { mode: 0o644 });
+        await fs.copyFile(cachedPath, targetPath);
+        await fs.chmod(targetPath, 0o644);
        console.log(`[FileOrganizer] Copied cover art from cache: ${filename}`);
      } else {
        // Download from external URL (e.g., Audible CDN)
@@ -54,6 +54,7 @@ export async function tagAudioFileMetadata(
    // Build ffmpeg command
    const args: string[] = [
      'ffmpeg',
+      '-y', // Automatically overwrite files without prompting
      '-i', `"${filePath}"`,
      '-codec', 'copy', // No re-encoding, metadata only
    ];
@@ -122,50 +122,50 @@ export class RankingAlgorithm {
  }

  /**
-   * Score format quality (40 points max)
-   * M4B with chapters: 40 pts
-   * M4B without chapters: 35 pts
-   * M4A: 25 pts
-   * MP3: 15 pts
-   * Other: 5 pts
+   * Score format quality (25 points max)
+   * M4B with chapters: 25 pts
+   * M4B without chapters: 22 pts
+   * M4A: 16 pts
+   * MP3: 10 pts
+   * Other: 3 pts
   */
  private scoreFormat(torrent: TorrentResult): number {
    const format = this.detectFormat(torrent);

    switch (format) {
      case 'M4B':
-        return torrent.hasChapters !== false ? 40 : 35;
+        return torrent.hasChapters !== false ? 25 : 22;
      case 'M4A':
-        return 25;
+        return 16;
      case 'MP3':
-        return 15;
+        return 10;
      default:
-        return 5;
+        return 3;
    }
  }

  /**
-   * Score seeder count (25 points max)
+   * Score seeder count (15 points max)
   * Logarithmic scaling:
   * 1 seeder: 0 points
-   * 10 seeders: 10 points
-   * 100 seeders: 20 points
-   * 1000+ seeders: 25 points
+   * 10 seeders: 6 points
+   * 100 seeders: 12 points
+   * 1000+ seeders: 15 points
   */
  private scoreSeeders(seeders: number): number {
    if (seeders === 0) return 0;
-    return Math.min(25, Math.log10(seeders + 1) * 10);
+    return Math.min(15, Math.log10(seeders + 1) * 6);
  }

  /**
-   * Score size reasonableness (20 points max)
+   * Score size reasonableness (10 points max)
   * Expected: 1-2 MB per minute (64-128 kbps)
-   * Perfect match: 20 points
+   * Perfect match: 10 points
   * Too small/large: Reduced points
   */
  private scoreSize(size: number, durationMinutes?: number): number {
    if (!durationMinutes) {
-      return 10; // Neutral score if duration unknown
+      return 5; // Neutral score if duration unknown
    }

    // Expected size: 1-2 MB per minute
@@ -173,7 +173,7 @@ export class RankingAlgorithm {
    const maxExpected = durationMinutes * 2 * 1024 * 1024; // 2 MB/min

    if (size >= minExpected && size <= maxExpected) {
-      return 20; // Perfect size
+      return 10; // Perfect size
    }

    // Calculate deviation penalty
@@ -182,29 +182,54 @@ export class RankingAlgorithm {
        ? (minExpected - size) / minExpected
        : (size - maxExpected) / maxExpected;

-    return Math.max(0, 20 - deviation * 20);
+    return Math.max(0, 10 - deviation * 10);
  }

  /**
-   * Score title/author match quality (15 points max)
-   * Title similarity: 0-10 points
-   * Author presence: 0-5 points
+   * Score title/author match quality (50 points max)
+   * Title similarity: 0-35 points (heavily weighted!)
+   * Author presence: 0-15 points
   */
  private scoreMatch(
    torrent: TorrentResult,
    audiobook: AudiobookRequest
  ): number {
-    const title = torrent.title.toLowerCase();
+    const torrentTitle = torrent.title.toLowerCase();
    const requestTitle = audiobook.title.toLowerCase();
    const requestAuthor = audiobook.author.toLowerCase();

-    // Title similarity (0-10 points)
-    const titleSimilarity = compareTwoStrings(requestTitle, title) * 10;
+    // Title matching (0-35 points)
+    let titleScore = 0;
+    if (torrentTitle.includes(requestTitle)) {
+      // Exact substring match → full points
+      titleScore = 35;
+    } else {
+      // No exact match → use fuzzy similarity for partial credit
+      titleScore = compareTwoStrings(requestTitle, torrentTitle) * 35;
+    }

-    // Author presence (0-5 points)
-    const hasAuthor = title.includes(requestAuthor) ? 5 : 0;
+    // Author matching (0-15 points)
+    // Parse requested authors (split on separators, filter out roles)
+    const requestAuthors = requestAuthor
+      .split(/,|&| and | - /)
+      .map(a => a.trim())
+      .filter(a => a.length > 2 && !['translator', 'narrator'].includes(a));

-    return Math.min(15, titleSimilarity + hasAuthor);
+    // Check how many authors appear in torrent title (exact substring match)
+    const authorMatches = requestAuthors.filter(author =>
+      torrentTitle.includes(author)
+    );
+
+    let authorScore = 0;
+    if (authorMatches.length > 0) {
+      // Exact substring match → proportional credit
+      authorScore = (authorMatches.length / requestAuthors.length) * 15;
+    } else {
+      // No exact match → use fuzzy similarity for partial credit
+      authorScore = compareTwoStrings(requestAuthor, torrentTitle) * 15;
+    }
+
+    return Math.min(50, titleScore + authorScore);
  }

  /**
@@ -261,21 +286,25 @@ export class RankingAlgorithm {
    }

    // Size notes
-    if (breakdown.sizeScore < 10) {
+    if (breakdown.sizeScore < 5) {
      notes.push('⚠️ Unusual file size');
    }

-    // Match notes
-    if (breakdown.matchScore < 8) {
-      notes.push('⚠️ Title/author may not match well');
+    // Match notes (now worth 50 points!)
+    if (breakdown.matchScore < 20) {
+      notes.push('⚠️ Poor title/author match');
+    } else if (breakdown.matchScore < 35) {
+      notes.push('⚠️ Weak title/author match');
+    } else if (breakdown.matchScore >= 45) {
+      notes.push('✓ Excellent title/author match');
    }

    // Overall quality assessment
-    if (breakdown.totalScore >= 80) {
+    if (breakdown.totalScore >= 75) {
      notes.push('✓ Excellent choice');
-    } else if (breakdown.totalScore >= 60) {
+    } else if (breakdown.totalScore >= 55) {
      notes.push('✓ Good choice');
-    } else if (breakdown.totalScore < 40) {
+    } else if (breakdown.totalScore < 35) {
      notes.push('⚠️ Consider reviewing this choice');
    }

@@ -299,11 +328,11 @@ export function getRankingAlgorithm(): RankingAlgorithm {
 export function rankTorrents(
  torrents: TorrentResult[],
  audiobook: AudiobookRequest
-): (TorrentResult & { qualityScore: number })[] {
+): (RankedTorrent & { qualityScore: number })[] {
  const algorithm = getRankingAlgorithm();
  const ranked = algorithm.rankTorrents(torrents, audiobook);

-  // Return torrents with qualityScore field for compatibility
+  // Add qualityScore field for UI compatibility (rounded score)
  return ranked.map((r) => ({
    ...r,
    qualityScore: Math.round(r.score),