Initial commit: WrestleDesk full project

- Django backend with DRF (clubs, wrestlers, trainers, exercises, templates, trainings, homework, locations, leistungstest)
- Next.js 16 frontend with React, Shadcn UI, Tailwind
- JWT authentication
- Full CRUD for all entities
- Calendar view for trainings
- Homework management system
- Leistungstest tracking

backend/exercises/admin.py

@@ -0,0 +1,12 @@
+import unfold
+from unfold.admin import ModelAdmin as UnfoldModelAdmin
+from django.contrib import admin
+from .models import Exercise
+
+
+@admin.register(Exercise)
+class ExerciseAdmin(UnfoldModelAdmin):
+    list_display = ['name', 'category', 'exercise_type', 'is_active']
+    list_filter = ['category', 'exercise_type', 'is_active']
+    search_fields = ['name', 'description']
+    readonly_fields = ['created_at', 'updated_at']