Revert "feat: auto-move imported emails to IMAP folder and add 90-day cleanup"

This reverts commit b1b30fe1dd.

paperless-backend/src/email/imap-folder.service.ts

@@ -1,52 +0,0 @@
-import { Injectable, Logger } from '@nestjs/common';
-import { ConfigService } from '@nestjs/config';
-import { ImapFlow } from 'imapflow';
-
-@Injectable()
-export class ImapFolderService {
-  private readonly logger = new Logger(ImapFolderService.name);
-
-  constructor(private readonly configService: ConfigService) {}
-
-  private createClient(): ImapFlow {
-    return new ImapFlow({
-      host: this.configService.get<string>('IMAP_HOST', ''),
-      port: this.configService.get<number>('IMAP_PORT', 993),
-      secure: this.configService.get<string>('IMAP_USE_SSL', 'true') === 'true',
-      auth: {
-        user: this.configService.get<string>('IMAP_USERNAME', ''),
-        pass: this.configService.get<string>('IMAP_PASSWORD', ''),
-      },
-      logger: false,
-    });
-  }
-
-  async moveToImportiert(messageId: string): Promise<void> {
-    if (!this.configService.get<string>('IMAP_HOST')) return;
-
-    const importedFolder = this.configService.get<string>('IMAP_IMPORTED_FOLDER', 'importiert');
-    const client = this.createClient();
-    try {
-      await client.connect();
-
-      const mailboxes = await client.list();
-      if (!mailboxes.some(m => m.path === importedFolder)) {
-        await client.mailboxCreate(importedFolder);
-        this.logger.log(`IMAP-Ordner "${importedFolder}" erstellt.`);
-      }
-
-      await client.mailboxOpen('INBOX');
-      const uids = await client.search({ header: { 'message-id': messageId } }, { uid: true });
-      if (Array.isArray(uids) && uids.length > 0) {
-        await client.messageMove(uids, importedFolder, { uid: true });
-        this.logger.log(`E-Mail ${messageId} → "${importedFolder}" verschoben.`);
-      } else {
-        this.logger.warn(`E-Mail ${messageId} nicht in INBOX gefunden (bereits verschoben?).`);
-      }
-    } catch (err: any) {
-      this.logger.error(`IMAP moveToImportiert fehlgeschlagen: ${err.message}`);
-    } finally {
-      await client.logout().catch(() => {});
-    }
-  }
-}