refactor: align codebase with EventCrew domain and trim legacy band stack

- Update API: events, users, policies, routes, resources, migrations
- Remove deprecated models/resources (customers, setlists, invitations, etc.)
- Refresh admin app and docs; remove apps/band

Made-with: Cursor

apps/portal/docker-compose.prod.yml

@@ -0,0 +1,11 @@
+version: '3'
+
+services:
+  vue-project:
+    container_name: vue-project_prod
+    build:
+      context: .
+      dockerfile: prod.Dockerfile
+    image: vue-app
+    ports:
+      - 8080:80