Enhance bot and WebUI functionality with new features and environment updates

- Added support for new environment variables in `.env.example` for public site and legal operator information.
- Integrated core commands into the bot's command structure for improved functionality.
- Implemented a new `publishBotStatus` function to update bot status in Redis, enhancing monitoring capabilities.
- Updated the landing page to include features, invite links, and support server access, improving user experience.
- Enhanced localization with new keys for core commands and landing page elements in both English and German.
- Improved error handling and logging for bot presence updates and status publishing.

apps/webui/src/lib/public-status.ts

@@ -0,0 +1,56 @@
+import { BOT_STATUS_REDIS_KEY, BotStatusPayloadSchema, PRESENCE_REDIS_KEY } from '@nexumi/shared';
+import { prisma } from './prisma';
+import { redis } from './redis';
+
+export async function getPublicStatus() {
+  const [rawStatus, rawPresence, updates] = await Promise.all([
+    redis.get(BOT_STATUS_REDIS_KEY),
+    redis.get(PRESENCE_REDIS_KEY),
+    prisma.changelogEntry.findMany({
+      orderBy: { publishedAt: 'desc' },
+      take: 10
+    })
+  ]);
+
+  let botStatus = null;
+  if (rawStatus) {
+    const parsed = BotStatusPayloadSchema.safeParse(JSON.parse(rawStatus));
+    botStatus = parsed.success ? parsed.data : null;
+  }
+
+  let maintenanceMode = false;
+  if (rawPresence) {
+    try {
+      const presence = JSON.parse(rawPresence) as { maintenanceMode?: boolean };
+      maintenanceMode = Boolean(presence.maintenanceMode);
+    } catch {
+      maintenanceMode = false;
+    }
+  } else {
+    const row = await prisma.botPresenceConfig.findUnique({ where: { id: 'singleton' } });
+    maintenanceMode = row?.maintenanceMode ?? false;
+  }
+
+  const degraded = !botStatus;
+  const overall = maintenanceMode ? 'maintenance' : degraded ? 'degraded' : 'operational';
+
+  return {
+    ok: !maintenanceMode,
+    overall,
+    maintenanceMode,
+    degraded,
+    shards: botStatus?.shards ?? [],
+    apiLatencyMs: botStatus?.apiLatencyMs ?? null,
+    guildCount: botStatus?.guildCount ?? (await prisma.guild.count()),
+    uptimeSeconds: botStatus?.uptimeSeconds ?? null,
+    updates: updates.map((entry) => ({
+      id: entry.id,
+      version: entry.version,
+      title: entry.title,
+      body: entry.body,
+      publishedAt: entry.publishedAt.toISOString(),
+      isIncident: entry.version.toLowerCase().startsWith('incident')
+    })),
+    updatedAt: botStatus?.updatedAt ?? new Date().toISOString()
+  };
+}