Implement premium features and GDPR compliance in bot and WebUI

- Added new models for premium tier configurations and assignments, enabling feature limits for free and premium users.
- Introduced GDPR deletion logging and commands for user data management.
- Enhanced logging configuration with retention days for audit logs.
- Updated bot commands and job processing to include new premium and GDPR functionalities.
- Improved localization with new keys for premium features and GDPR commands in both English and German.
- Added UI components for managing premium settings and logging retention in the WebUI.

apps/webui/src/app/api/guilds/[guildId]/feeds/route.ts

@@ -2,7 +2,7 @@ import { SocialFeedDashboardCreateSchema } from '@nexumi/shared';
 import { type NextRequest, NextResponse } from 'next/server';
 import { requireGuildAccess, toApiErrorResponse } from '@/lib/auth';
 import { writeDashboardAudit } from '@/lib/audit';
-import { createFeed, listFeeds } from '@/lib/module-configs/feeds';
+import { createFeed, FeedPremiumError, listFeeds } from '@/lib/module-configs/feeds';
 import { prisma } from '@/lib/prisma';
 
 interface RouteParams {
@@ -39,6 +39,9 @@ export async function POST(request: NextRequest, { params }: RouteParams) {
 
     return NextResponse.json(feed, { status: 201 });
   } catch (error) {
+    if (error instanceof FeedPremiumError) {
+      return NextResponse.json({ error: error.code }, { status: 403 });
+    }
     return toApiErrorResponse(error);
   }
 }