Add per-indexer ratio-based seeding policy

Introduce a per-indexer ratioLimit alongside seedingTimeMinutes to control torrent cleanup. Updates include: documentation (scheduler and settings pages), types and API (saved indexer config now includes ratioLimit), setup and management UI (new TorrentSeedingFields component, modal wiring, validation and handlers), and processor logic (cleanup-seeded-torrents now requires AND-semantics between time and ratio; 0 disables a criterion, both 0 = never cleaned, undefined client ratio with ratioLimit>0 = not met). Tests were added/updated to cover ratio-only, time+ratio, missing-ratio, and UI interactions. Default behavior: ratioLimit defaults to 0 (no ratio requirement).

src/app/api/admin/settings/prowlarr/indexers/route.ts

@@ -17,6 +17,7 @@ interface SavedIndexerConfig {
   protocol: string;
   priority: number;
   seedingTimeMinutes?: number; // Torrents only
+  ratioLimit?: number; // Torrents only (0 = no ratio requirement)
   removeAfterProcessing?: boolean; // Usenet only
   rssEnabled?: boolean;
   audiobookCategories?: number[]; // Array of category IDs for audiobooks (default: [3030])
@@ -79,6 +80,7 @@ export async function GET(request: NextRequest) {
           // Add protocol-specific fields
           if (isTorrent) {
             config.seedingTimeMinutes = saved?.seedingTimeMinutes ?? 0;
+            config.ratioLimit = saved?.ratioLimit ?? 0;
           } else {
             config.removeAfterProcessing = saved?.removeAfterProcessing ?? true;
           }
@@ -134,6 +136,7 @@ export async function PUT(request: NextRequest) {
             const isTorrent = indexer.protocol?.toLowerCase() === 'torrent';
             if (isTorrent) {
               config.seedingTimeMinutes = indexer.seedingTimeMinutes ?? 0;
+              config.ratioLimit = indexer.ratioLimit ?? 0;
             } else {
               config.removeAfterProcessing = indexer.removeAfterProcessing ?? true;
             }