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/app/[locale]/club/[slug]/[...page]/page.tsx

@@ -1,6 +1,7 @@
 import { createClient } from '@supabase/supabase-js';
 import { notFound } from 'next/navigation';
 import { SiteRenderer } from '@kit/site-builder/components';
+import type { SiteData } from '@kit/site-builder/context';
 
 interface Props { params: Promise<{ slug: string; page: string[] }> }
 
@@ -23,9 +24,26 @@ export default async function ClubSubPage({ params }: Props) {
     .eq('account_id', account.id).eq('slug', pageSlug).eq('is_published', true).maybeSingle();
   if (!sitePageData) notFound();
 
+  // Pre-fetch CMS data for Puck components
+  const [eventsRes, coursesRes, postsRes] = await Promise.all([
+    supabase.from('events').select('id, name, event_date, event_time, location, fee, status')
+      .eq('account_id', account.id).order('event_date', { ascending: true }).limit(20),
+    supabase.from('courses').select('id, name, start_date, end_date, fee, capacity, status')
+      .eq('account_id', account.id).order('start_date', { ascending: true }).limit(20),
+    supabase.from('cms_posts').select('id, title, excerpt, cover_image, published_at, slug')
+      .eq('account_id', account.id).eq('status', 'published').order('published_at', { ascending: false }).limit(20),
+  ]);
+
+  const siteData: SiteData = {
+    accountId: account.id,
+    events: eventsRes.data ?? [],
+    courses: (coursesRes.data ?? []).map(c => ({ ...c, enrolled_count: 0 })),
+    posts: postsRes.data ?? [],
+  };
+
   return (
     <div style={{ '--primary': settings.primary_color, fontFamily: settings.font_family } as React.CSSProperties}>
-      <SiteRenderer data={(sitePageData.puck_data ?? {}) as Record<string, unknown>} />
+      <SiteRenderer data={(sitePageData.puck_data ?? {}) as Record<string, unknown>} siteData={siteData} />
     </div>
   );
 }