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

docker/kong.yml

@@ -46,6 +46,17 @@ services:
             - anon
             - admin
 
+  # Realtime
+  - name: realtime-v1
+    url: http://supabase-realtime:4000/socket/
+    routes:
+      - name: realtime-v1-routes
+        strip_path: true
+        paths:
+          - /realtime/v1/
+    plugins:
+      - name: cors
+
   # Storage
   - name: storage-v1
     url: http://supabase-storage:5000/
@@ -56,3 +67,21 @@ services:
           - /storage/v1/
     plugins:
       - name: cors
+
+  # pg_meta
+  - name: meta
+    url: http://supabase-meta:8080/
+    routes:
+      - name: meta-routes
+        strip_path: true
+        paths:
+          - /pg/
+    plugins:
+      - name: key-auth
+        config:
+          hide_credentials: false
+      - name: acl
+        config:
+          hide_groups_header: true
+          allow:
+            - admin