fix(ingestion): stop fabricating missing player positions

app/scouting/tests.py

@@ -66,6 +66,14 @@ class ScoutingSearchViewsTests(TestCase):
         cls.player_wing.roles.add(cls.role_3d)
         cls.player_wing.specialties.add(cls.specialty_offball)
 
+        cls.player_unknown_position = Player.objects.create(
+            full_name="No Position Prospect",
+            birth_date=date(2001, 3, 3),
+            position=None,
+            height_cm=Decimal("180.00"),
+            weight_kg=Decimal("88.00"),
+        )
+
         cls.ctx_pg_good = PlayerSeason.objects.create(
             player=cls.player_pg,
             season=cls.season_2025,
@@ -144,6 +152,24 @@ class ScoutingSearchViewsTests(TestCase):
         self.assertContains(response, self.player_pg.full_name)
         self.assertNotContains(response, self.player_wing.full_name)
 
+    def test_players_with_null_position_are_searchable_by_other_fields(self):
+        response = self.client.get(
+            reverse("scouting:player_list"),
+            {"name": "No Position"},
+        )
+
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, self.player_unknown_position.full_name)
+
+    def test_position_filter_excludes_players_with_null_position(self):
+        response = self.client.get(
+            reverse("scouting:player_list"),
+            {"position": "SG"},
+        )
+
+        self.assertEqual(response.status_code, 200)
+        self.assertNotContains(response, self.player_unknown_position.full_name)
+
     def test_filter_by_wingspan_thresholds(self):
         response = self.client.get(
             reverse("scouting:player_list"),
@@ -550,6 +576,23 @@ class FirstPublicEuropeanImporterTests(TestCase):
         self.assertTrue(PlayerSeason.objects.filter(player__full_name="Muhammad-Ali Abdur-Rahkman").exists())
         self.assertTrue(PlayerSeasonStats.objects.filter(player_season__player__full_name="Muhammad-Ali Abdur-Rahkman").exists())
 
+    def test_importer_does_not_assign_fake_position_when_source_position_is_missing(self):
+        self.run_import()
+
+        player = Player.objects.get(full_name="Muhammad-Ali Abdur-Rahkman")
+        self.assertIsNone(player.position)
+
+    def test_importer_preserves_existing_real_position_when_source_position_is_missing(self):
+        self.run_import()
+        player = Player.objects.get(full_name="Muhammad-Ali Abdur-Rahkman")
+        player.position = Player.Position.PG
+        player.save(update_fields=["position", "updated_at"])
+
+        self.run_import()
+        player.refresh_from_db()
+
+        self.assertEqual(player.position, Player.Position.PG)
+
     def test_importer_is_idempotent_for_same_input(self):
         self.run_import()
         first_counts = {