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/lib/module-configs/feeds.ts

@@ -5,6 +5,13 @@ import type {
 } from '@nexumi/shared';
 import type { SocialFeed } from '@prisma/client';
 import { prisma } from '../prisma';
+import { assertPremiumLimit, PremiumLimitError } from '../premium';
+
+export class FeedPremiumError extends Error {
+  constructor(public readonly code: 'premium_limit' | 'premium_feature') {
+    super(code);
+  }
+}
 
 function toDashboard(feed: SocialFeed): SocialFeedDashboard {
   return {
@@ -31,6 +38,15 @@ export async function createFeed(
   input: SocialFeedDashboardCreate
 ): Promise<SocialFeedDashboard> {
   await prisma.guild.upsert({ where: { id: guildId }, update: {}, create: { id: guildId } });
+  const currentCount = await prisma.socialFeed.count({ where: { guildId } });
+  try {
+    await assertPremiumLimit(prisma, guildId, 'feeds', currentCount);
+  } catch (error) {
+    if (error instanceof PremiumLimitError) {
+      throw new FeedPremiumError(error.code === 'feature_disabled' ? 'premium_feature' : 'premium_limit');
+    }
+    throw error;
+  }
   const feed = await prisma.socialFeed.create({
     data: {
       guildId,