Moderation & Kontakt + Game-Server-Monitor

- Modmail: DMs an den Bot landen als Threads im privaten Staff-Kanal,
  Thread-Antworten gehen als DM zurück (Zustell-Feedback per Reaktion)
- Willkommens-Embed für neue Member (GuildMemberAdd; Server-Members-Intent nötig)
- Mod-Log: gelöschte/bearbeitete User-Nachrichten in privaten Log-Kanal
- Server-Monitor: FiveM-kompatible Endpoints (/dynamic.json) alle 2 min,
  persistentes Status-Embed (edit in place) + Spielerzahl als Bot-Presence
- Neue Intents: DirectMessages, GuildMembers; Partials.Channel
- Setup-Seite: Sektionen // Moderation & Kontakt und // Game-Server

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/web/api.js

@@ -203,6 +203,11 @@ ${rssItems}
             starboard_channel_id: getSetting('starboard_channel_id') ?? '',
             starboard_threshold: Number(getSetting('starboard_threshold')) || 3,
             screenshot_channel_id: getSetting('screenshot_channel_id') ?? '',
+            modmail_channel_id: getSetting('modmail_channel_id') ?? '',
+            welcome_channel_id: getSetting('welcome_channel_id') ?? '',
+            modlog_channel_id: getSetting('modlog_channel_id') ?? '',
+            status_channel_id: getSetting('status_channel_id') ?? '',
+            gameservers: getSetting('gameservers') ?? '',
         };
     }
 
@@ -231,7 +236,11 @@ ${rssItems}
         const body = request.body ?? {};
 
         // Kanäle: müssen existierende Textkanäle sein (optionale dürfen leer sein = aus)
-        const OPTIONAL_CHANNELS = ['release_channel_id', 'backup_channel_id', 'starboard_channel_id', 'screenshot_channel_id'];
+        const OPTIONAL_CHANNELS = [
+            'release_channel_id', 'backup_channel_id', 'starboard_channel_id',
+            'screenshot_channel_id', 'modmail_channel_id', 'welcome_channel_id',
+            'modlog_channel_id', 'status_channel_id',
+        ];
         for (const key of ['commit_channel_id', 'devlog_channel_id', ...OPTIONAL_CHANNELS]) {
             if (body[key] === undefined) continue;
             const value = String(body[key]);
@@ -279,7 +288,7 @@ ${rssItems}
         if (body.backup_enabled !== undefined) {
             setSetting('backup_enabled', body.backup_enabled ? '1' : '0');
         }
-        for (const key of ['commit_branch_filter', 'ignored_repos', 'bug_report_repo', 'watchdog_urls', 'roadmap_repo']) {
+        for (const key of ['commit_branch_filter', 'ignored_repos', 'bug_report_repo', 'watchdog_urls', 'roadmap_repo', 'gameservers']) {
             if (body[key] !== undefined) {
                 setSetting(key, String(body[key]).trim());
             }