Add Transmission/NZBGet and per-client paths and much more

Extend multi-download-client support to include Transmission and NZBGet and introduce per-client custom download paths. Adds protocol mapping and new client types, Transmission/NZBGet integration services, API CRUD and validation changes, UI components/modal updates and live path previews, and manager routing by protocol. Includes DB migrations (download_path on download_history, interactive_search_access on users), schema updates, and related processor/service fixes and tests to ensure backward compatibility and proper path resolution.

src/app/api/setup/complete/route.ts

@@ -9,11 +9,14 @@ import bcrypt from 'bcrypt';
 import { generateAccessToken, generateRefreshToken } from '@/lib/utils/jwt';
 import { getEncryptionService } from '@/lib/services/encryption.service';
 import { getPlexService } from '@/lib/integrations/plex.service';
+import { getClientDisplayName } from '@/lib/interfaces/download-client.interface';
+import { requireSetupIncomplete } from '@/lib/middleware/auth';
 import { RMABLogger } from '@/lib/utils/logger';
 
 const logger = RMABLogger.create('API.Setup.Complete');
 
 export async function POST(request: NextRequest) {
+  return requireSetupIncomplete(request, async (req) => {
   try {
     const {
       backendMode,
@@ -28,7 +31,7 @@ export async function POST(request: NextRequest) {
       downloadClient,
       paths,
       bookdate,
-    } = await request.json();
+    } = await req.json();
 
     // Validate backend mode
     if (!backendMode || !['plex', 'audiobookshelf'].includes(backendMode)) {
@@ -401,7 +404,7 @@ export async function POST(request: NextRequest) {
       downloadClientsArray = [{
         id: `temp-${Date.now()}`,
         type: downloadClient.type,
-        name: downloadClient.type === 'qbittorrent' ? 'qBittorrent' : 'SABnzbd',
+        name: getClientDisplayName(downloadClient.type),
         enabled: true,
         url: downloadClient.url,
         username: downloadClient.username,
@@ -562,4 +565,5 @@ export async function POST(request: NextRequest) {
       { status: 500 }
     );
   }
+  });
 }