Implement Owner Panel features and maintenance mode handling

- Introduced the Owner Panel with new routes and UI components for managing guilds, user blacklists, feature flags, and bot presence.
- Added maintenance mode functionality to prevent non-owner users from executing commands during maintenance periods.
- Enhanced localization with new keys for Owner Panel features in both English and German.
- Updated job processing to include a presence refresh job, ensuring the bot's status is regularly updated.
- Improved environment configuration to support owner user IDs for access control.

apps/webui/src/app/api/owner/jobs/route.ts

@@ -0,0 +1,48 @@
+import { NextResponse } from 'next/server';
+import { toApiErrorResponse } from '@/lib/auth';
+import { getAllQueueStats, retryFailedJobs } from '@/lib/owner-jobs';
+import { writeOwnerAudit } from '@/lib/owner-audit';
+import { requireOwner } from '@/lib/owner-auth';
+import { prisma } from '@/lib/prisma';
+
+export async function GET() {
+  try {
+    await requireOwner('SUPPORT');
+    const [queues, migrations] = await Promise.all([
+      getAllQueueStats(),
+      prisma.$queryRaw<Array<{ migration_name: string; finished_at: Date | null }>>`
+        SELECT migration_name, finished_at FROM "_prisma_migrations" ORDER BY finished_at DESC NULLS LAST
+      `
+    ]);
+    return NextResponse.json({
+      queues,
+      migrations: migrations.map((row) => ({
+        name: row.migration_name,
+        finishedAt: row.finished_at?.toISOString() ?? null
+      }))
+    });
+  } catch (error) {
+    return toApiErrorResponse(error);
+  }
+}
+
+export async function POST(request: Request) {
+  try {
+    const session = await requireOwner('ADMIN');
+    const body = (await request.json()) as { queueName?: string };
+    if (!body.queueName) {
+      return NextResponse.json({ error: 'queueName required' }, { status: 400 });
+    }
+    const retried = await retryFailedJobs(body.queueName);
+    await writeOwnerAudit(prisma, {
+      actorUserId: session.user.id,
+      action: 'jobs.retryFailed',
+      targetType: 'Queue',
+      targetId: body.queueName,
+      after: { retried }
+    });
+    return NextResponse.json({ retried });
+  } catch (error) {
+    return toApiErrorResponse(error);
+  }
+}