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/scanner/scanner-watcher.service.ts

@@ -1,4 +1,9 @@
-import { Injectable, Logger, OnModuleInit, OnModuleDestroy } from '@nestjs/common';
+import {
+  Injectable,
+  Logger,
+  OnModuleInit,
+  OnModuleDestroy,
+} from '@nestjs/common';
 import { Cron } from '@nestjs/schedule';
 import { ConfigService } from '@nestjs/config';
 import { InjectRepository } from '@nestjs/typeorm';
@@ -31,7 +36,10 @@ export class ScannerWatcherService implements OnModuleInit, OnModuleDestroy {
     @InjectRepository(InboxDocument)
     private readonly documentRepo: Repository<InboxDocument>,
   ) {
-    this.sourceRoot = this.configService.get<string>('SCANNER_WATCH_DIR', '/mnt/scans');
+    this.sourceRoot = this.configService.get<string>(
+      'SCANNER_WATCH_DIR',
+      '/mnt/scans',
+    );
   }
 
   onModuleInit(): void {
@@ -67,7 +75,9 @@ export class ScannerWatcherService implements OnModuleInit, OnModuleDestroy {
 
     this.watcher
       .on('add', (filePath: string) => this.handleNewFile(filePath))
-      .on('error', (error: Error) => this.logger.error(`Watcher Fehler: ${error.message}`));
+      .on('error', (error: Error) =>
+        this.logger.error(`Watcher Fehler: ${error.message}`),
+      );
 
     this.logger.log('Scanner-Watcher aktiv');
   }
@@ -82,11 +92,15 @@ export class ScannerWatcherService implements OnModuleInit, OnModuleDestroy {
   private async initialScan(silent = false): Promise<void> {
     let subdirs: string[];
     try {
-      const entries = await fs.readdir(this.sourceRoot, { withFileTypes: true });
+      const entries = await fs.readdir(this.sourceRoot, {
+        withFileTypes: true,
+      });
       subdirs = entries.filter((e) => e.isDirectory()).map((e) => e.name);
     } catch (err: any) {
       if (!silent) {
-        this.logger.warn(`Scanner-Check: Quellverzeichnis nicht lesbar (${this.sourceRoot}): ${err.message}`);
+        this.logger.warn(
+          `Scanner-Check: Quellverzeichnis nicht lesbar (${this.sourceRoot}): ${err.message}`,
+        );
       }
       return;
     }
@@ -99,7 +113,9 @@ export class ScannerWatcherService implements OnModuleInit, OnModuleDestroy {
         files = await fs.readdir(dir);
       } catch (err: any) {
         if (!silent) {
-          this.logger.warn(`Scanner-Check: ${dir} nicht lesbar: ${err.message}`);
+          this.logger.warn(
+            `Scanner-Check: ${dir} nicht lesbar: ${err.message}`,
+          );
         }
         continue;
       }
@@ -110,7 +126,9 @@ export class ScannerWatcherService implements OnModuleInit, OnModuleDestroy {
 
         if (!(await this.isStable(full))) {
           if (!silent) {
-            this.logger.debug(`Scanner-Check: ${full} noch nicht stabil – Watcher übernimmt`);
+            this.logger.debug(
+              `Scanner-Check: ${full} noch nicht stabil – Watcher übernimmt`,
+            );
           }
           continue;
         }
@@ -204,10 +222,14 @@ export class ScannerWatcherService implements OnModuleInit, OnModuleDestroy {
       try {
         await this.barcodeScanner.scanAndMatch(doc);
       } catch (err: any) {
-        this.logger.warn(`Barcode-Scan nach Move fehlgeschlagen (${id}): ${err.message}`);
+        this.logger.warn(
+          `Barcode-Scan nach Move fehlgeschlagen (${id}): ${err.message}`,
+        );
       }
     } catch (err: any) {
-      this.logger.error(`Übernahme fehlgeschlagen für ${filePath}: ${err.message}`);
+      this.logger.error(
+        `Übernahme fehlgeschlagen für ${filePath}: ${err.message}`,
+      );
     } finally {
       this.processing.delete(filePath);
     }