chore: apply ESLint auto-fix across entire backend

Reformats code style (line breaks, indentation, type annotations)
without changing logic. Also includes minor feature additions bundled
in the same lint run (stats service, user-settings groups, agrarmonitor
polling improvements).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

paperless-backend/src/preprocessing/ocr.service.ts

@@ -9,7 +9,10 @@ export class OcrService {
   private readonly ollamaModel: string;
 
   constructor(private readonly configService: ConfigService) {
-    this.ollamaUrl = this.configService.get<string>('OLLAMA_URL', 'http://localhost:11434');
+    this.ollamaUrl = this.configService.get<string>(
+      'OLLAMA_URL',
+      'http://localhost:11434',
+    );
     this.ollamaModel = this.configService.get<string>('OLLAMA_MODEL', 'llava');
   }
 
@@ -39,7 +42,9 @@ Antworte nur mit dem extrahierten Markdown-Text, keine Erklärungen.`;
       );
 
       const markdown = response.data.response?.trim() ?? '';
-      this.logger.log(`OCR abgeschlossen: ${markdown.length} Zeichen extrahiert`);
+      this.logger.log(
+        `OCR abgeschlossen: ${markdown.length} Zeichen extrahiert`,
+      );
       return markdown;
     } catch (error: any) {
       this.logger.error(`Ollama OCR fehlgeschlagen: ${error.message}`);