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/training_log/serializers.py

@@ -0,0 +1,27 @@
+from rest_framework import serializers
+from .models import TrainingLogEntry
+
+
+class TrainingLogEntrySerializer(serializers.ModelSerializer):
+    wrestler_name = serializers.CharField(source='wrestler.__str__', read_only=True)
+    exercise_name = serializers.CharField(source='exercise.name', read_only=True)
+    training_date = serializers.DateField(source='training.date', read_only=True)
+
+    class Meta:
+        model = TrainingLogEntry
+        fields = [
+            'id', 'wrestler', 'wrestler_name', 'training', 'training_date',
+            'exercise', 'exercise_name', 'reps', 'sets', 'time_minutes',
+            'weight_kg', 'rating', 'notes', 'logged_at', 'created_at'
+        ]
+
+
+class TrainingLogStatsSerializer(serializers.Serializer):
+    total_entries = serializers.IntegerField()
+    unique_exercises = serializers.IntegerField()
+    total_reps = serializers.IntegerField()
+    avg_sets = serializers.FloatField()
+    avg_rating = serializers.FloatField()
+    this_week = serializers.IntegerField()
+    top_exercises = serializers.ListField(child=serializers.DictField())
+    progress = serializers.DictField()