feat: complete CMS v2 with Docker, Fischerei, Meetings, Verband modules + UX audit fixes

Major changes:
- Docker Compose: full Supabase stack (11 services) equivalent to supabase CLI
- Fischerei module: 16 DB tables, waters/species/stocking/catch books/competitions
- Sitzungsprotokolle module: meeting protocols, agenda items, task tracking
- Verbandsverwaltung module: federation management, member clubs, contacts, fees
- Per-account module activation via Modules page toggle
- Site Builder: live CMS data in Puck blocks (courses, events, membership registration)
- Public registration APIs: course signup, event registration, membership application
- Document generation: PDF member cards, Excel reports, HTML labels
- Landing page: real Com.BISS content (no filler text)
- UX audit fixes: AccountNotFound component, shared status badges, confirm dialog,
  pagination, duplicate heading removal, emoji→badge replacement, a11y fixes
- QA: healthcheck fix, API auth fix, enum mismatch fix, password required attribute

apps/web/components/account-not-found.tsx

@@ -0,0 +1,22 @@
+import Link from 'next/link';
+import { AlertTriangle } from 'lucide-react';
+import { Button } from '@kit/ui/button';
+
+export function AccountNotFound() {
+  return (
+    <div className="flex flex-col items-center justify-center py-24 text-center">
+      <div className="mb-4 rounded-full bg-destructive/10 p-4">
+        <AlertTriangle className="h-8 w-8 text-destructive" />
+      </div>
+      <h2 className="text-xl font-semibold">Konto nicht gefunden</h2>
+      <p className="mt-2 max-w-md text-sm text-muted-foreground">
+        Das angeforderte Konto existiert nicht oder Sie haben keine Berechtigung darauf zuzugreifen.
+      </p>
+      <div className="mt-6">
+        <Link href="/home">
+          <Button variant="outline">Zum Dashboard</Button>
+        </Link>
+      </div>
+    </div>
+  );
+}

apps/web/components/confirm-dialog.tsx

@@ -0,0 +1,55 @@
+'use client';
+
+import {
+  AlertDialog,
+  AlertDialogAction,
+  AlertDialogCancel,
+  AlertDialogContent,
+  AlertDialogDescription,
+  AlertDialogFooter,
+  AlertDialogHeader,
+  AlertDialogTitle,
+  AlertDialogTrigger,
+} from '@kit/ui/alert-dialog';
+
+interface ConfirmDialogProps {
+  trigger: React.ReactNode;
+  title: string;
+  description: string;
+  confirmLabel?: string;
+  cancelLabel?: string;
+  variant?: 'default' | 'destructive';
+  onConfirm: () => void;
+}
+
+export function ConfirmDialog({
+  trigger,
+  title,
+  description,
+  confirmLabel = 'Bestätigen',
+  cancelLabel = 'Abbrechen',
+  variant = 'default',
+  onConfirm,
+}: ConfirmDialogProps) {
+  return (
+    <AlertDialog>
+      <AlertDialogTrigger render={trigger as React.ReactElement}>
+      </AlertDialogTrigger>
+      <AlertDialogContent>
+        <AlertDialogHeader>
+          <AlertDialogTitle>{title}</AlertDialogTitle>
+          <AlertDialogDescription>{description}</AlertDialogDescription>
+        </AlertDialogHeader>
+        <AlertDialogFooter>
+          <AlertDialogCancel>{cancelLabel}</AlertDialogCancel>
+          <AlertDialogAction
+            onClick={onConfirm}
+            className={variant === 'destructive' ? 'bg-destructive text-destructive-foreground hover:bg-destructive/90' : ''}
+          >
+            {confirmLabel}
+          </AlertDialogAction>
+        </AlertDialogFooter>
+      </AlertDialogContent>
+    </AlertDialog>
+  );
+}