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

.env

@@ -0,0 +1,23 @@
+# =====================================================
+# MyEasyCMS v2 — Local Development Environment
+# Auto-generated — Mo. 30 März 2026 17:11:01 CEST
+# =====================================================
+
+POSTGRES_PASSWORD=BqgGAwNuKeZZtaE2VJRAkxR48zj9XVw
+JWT_SECRET=BhD5zXZXcdI23FtNk9kIeGN5z06UQ1fZUhCLvMr6
+
+SUPABASE_ANON_KEY=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJyb2xlIjoiYW5vbiIsImlzcyI6InN1cGFiYXNlIiwiaWF0IjoxNzc0ODgzNDYwLCJleHAiOjIwOTAyNDM0NjB9.hbeQae1gYRTcJQ_6m7MPjoDlYFhp4tsszEQD2g5q6vY
+SUPABASE_SERVICE_ROLE_KEY=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJyb2xlIjoic2VydmljZV9yb2xlIiwiaXNzIjoic3VwYWJhc2UiLCJpYXQiOjE3NzQ4ODM0NjAsImV4cCI6MjA5MDI0MzQ2MH0.gqAnWDmPmnf-XMA9FcIKGo7qVVxtJw5UvSsTlTup3Ns
+
+SITE_URL=http://localhost:3000
+APP_PORT=3000
+
+KONG_HTTP_PORT=8000
+KONG_HTTPS_PORT=8443
+API_EXTERNAL_URL=http://localhost:8000
+
+ENABLE_EMAIL_AUTOCONFIRM=true
+DISABLE_SIGNUP=false
+JWT_EXPIRY=3600
+
+DB_WEBHOOK_SECRET=local-dev-webhook-secret