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

api/.env.example

@@ -1,4 +1,4 @@
-APP_NAME="Band Management"
+APP_NAME="Event Crew"
 APP_ENV=local
 APP_KEY=
 APP_DEBUG=true
@@ -20,8 +20,8 @@ LOG_LEVEL=debug
 DB_CONNECTION=mysql
 DB_HOST=127.0.0.1
 DB_PORT=3306
-DB_DATABASE=band_management
-DB_USERNAME=band_management
+DB_DATABASE=event_crew
+DB_USERNAME=event_crew
 DB_PASSWORD=secret
 
 SESSION_DRIVER=database
@@ -47,7 +47,7 @@ MAIL_PORT=1025
 MAIL_USERNAME=null
 MAIL_PASSWORD=null
 MAIL_ENCRYPTION=null
-MAIL_FROM_ADDRESS="noreply@bandmanagement.nl"
+MAIL_FROM_ADDRESS="noreply@eventcrew.nl"
 MAIL_FROM_NAME="${APP_NAME}"
 
 # CORS - Frontend SPAs