Fix file copy location to respect configured media directory

Previously, files were always being copied to /media/audiobooks regardless
of the configured media directory in settings. This was caused by:

1. FileOrganizer singleton reading from MEDIA_DIR env var (never set)
   instead of database config 'media_dir'
2. Hardcoded /media/audiobooks fallback being used when env var not found
3. Three locations passing hardcoded paths to addOrganizeJob (unused)

Changes:
- Modified getFileOrganizer() to read media_dir from database config
- Made targetPath parameter optional in addOrganizeJob (not used by processor)
- Removed hardcoded /media/audiobooks paths from all addOrganizeJob calls
- Updated organize-files processor to await getFileOrganizer()
- Updated documentation to reflect configuration behavior

Files now correctly copy to the directory configured in setup wizard or
settings page, with /media/audiobooks only as fallback if not configured.

Fixes: User-reported issue where configured media directory was ignored

src/app/api/requests/[id]/route.ts

@@ -194,8 +194,7 @@ export async function PATCH(
           await jobQueue.addOrganizeJob(
             id,
             requestWithData.audiobook.id,
-            downloadPath,
-            `/media/audiobooks/${requestWithData.audiobook.author}/${requestWithData.audiobook.title}`
+            downloadPath
           );
 
           updated = await prisma.request.update({

src/lib/processors/monitor-download.processor.ts

@@ -117,13 +117,12 @@ export async function processMonitorDownload(payload: MonitorDownloadPayload): P
         throw new Error('Request or audiobook not found');
       }
 
-      // Trigger organize files job
+      // Trigger organize files job (target path determined by database config)
       const jobQueue = getJobQueueService();
       await jobQueue.addOrganizeJob(
         requestId,
         request.audiobook.id,
-        `${downloadPath}/${torrent.name}`,
-        `/media/audiobooks/${request.audiobook.author}/${request.audiobook.title}`
+        `${downloadPath}/${torrent.name}`
       );
 
       await logger?.info(`Triggered organize_files job for request ${requestId}`);

src/lib/processors/organize-files.processor.ts

@@ -43,8 +43,8 @@ export async function processOrganizeFiles(payload: OrganizeFilesPayload): Promi
 
     await logger?.info(`Organizing: ${audiobook.title} by ${audiobook.author}`);
 
-    // Get file organizer
-    const organizer = getFileOrganizer();
+    // Get file organizer (reads media_dir from database config)
+    const organizer = await getFileOrganizer();
 
     // Organize files (pass logger to file organizer)
     const result = await organizer.organize(

src/lib/processors/retry-failed-imports.processor.ts

@@ -72,8 +72,7 @@ export async function processRetryFailedImports(payload: RetryFailedImportsPaylo
         await jobQueue.addOrganizeJob(
           request.id,
           request.audiobook.id,
-          downloadPath,
-          `/media/audiobooks/${request.audiobook.author}/${request.audiobook.title}`
+          downloadPath
         );
         triggered++;
         await logger?.info(`Triggered organize job for request ${request.id}: ${request.audiobook.title}`);

src/lib/services/job-queue.service.ts

@@ -58,7 +58,7 @@ export interface OrganizeFilesPayload extends JobPayload {
   requestId: string;
   audiobookId: string;
   downloadPath: string;
-  targetPath: string;
+  targetPath?: string; // Optional - not used by processor (reads from database config)
 }
 
 export interface ScanPlexPayload extends JobPayload {
@@ -499,12 +499,13 @@ export class JobQueueService {
 
   /**
    * Add organize files job
+   * Note: targetPath parameter is deprecated and unused (reads from database config instead)
    */
   async addOrganizeJob(
     requestId: string,
     audiobookId: string,
     downloadPath: string,
-    targetPath: string
+    targetPath?: string
   ): Promise<string> {
     return await this.addJob(
       'organize_files',
@@ -512,7 +513,7 @@ export class JobQueueService {
         requestId,
         audiobookId,
         downloadPath,
-        targetPath,
+        targetPath, // Not used by processor
       } as OrganizeFilesPayload,
       {
         priority: 8,

src/lib/utils/file-organizer.ts

@@ -464,16 +464,18 @@ export class FileOrganizer {
   }
 }
 
-// Singleton instance
-let fileOrganizer: FileOrganizer | null = null;
+/**
+ * Get FileOrganizer instance configured from database settings
+ * Reads media_dir from database configuration, falls back to /media/audiobooks if not configured
+ */
+export async function getFileOrganizer(): Promise<FileOrganizer> {
+  // Read media_dir from database config
+  const config = await prisma.configuration.findUnique({
+    where: { key: 'media_dir' },
+  });
 
-export function getFileOrganizer(): FileOrganizer {
-  if (!fileOrganizer) {
-    const mediaDir = process.env.MEDIA_DIR || '/media/audiobooks';
-    const tempDir = process.env.TEMP_DIR || '/tmp/readmeabook';
+  const mediaDir = config?.value || process.env.MEDIA_DIR || '/media/audiobooks';
+  const tempDir = process.env.TEMP_DIR || '/tmp/readmeabook';
 
-    fileOrganizer = new FileOrganizer(mediaDir, tempDir);
-  }
-
-  return fileOrganizer;
+  return new FileOrganizer(mediaDir, tempDir);
 }