fix: make playerseason uniqueness context-aware

app/scouting/migrations/0004_remove_playerseason_uniq_player_season_and_more.py

@@ -0,0 +1,21 @@
+# Generated by Django 5.2.2 on 2026-04-06 17:30
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('scouting', '0003_alter_player_position'),
+    ]
+
+    operations = [
+        migrations.RemoveConstraint(
+            model_name='playerseason',
+            name='uniq_player_season',
+        ),
+        migrations.AddConstraint(
+            model_name='playerseason',
+            constraint=models.UniqueConstraint(fields=('player', 'season', 'team', 'competition'), name='uniq_player_season_context', nulls_distinct=False),
+        ),
+    ]

app/scouting/models.py

@@ -121,11 +121,17 @@ class PlayerSeason(models.Model):
     class Meta:
         ordering = ["player__full_name", "-season__start_year"]
         constraints = [
-            models.UniqueConstraint(fields=["player", "season"], name="uniq_player_season"),
+            models.UniqueConstraint(
+                fields=["player", "season", "team", "competition"],
+                name="uniq_player_season_context",
+                nulls_distinct=False,
+            ),
         ]
 
     def __str__(self) -> str:
-        return f"{self.player.full_name} - {self.season.name}"
+        team_name = self.team.name if self.team else "No team"
+        competition_name = self.competition.name if self.competition else "No competition"
+        return f"{self.player.full_name} - {self.season.name} - {team_name} - {competition_name}"
 
 
 class PlayerSeasonStats(models.Model):