progress on conversion to tailwind

cards/models.py

@@ -52,6 +52,15 @@ class Rarity(models.Model):
   def __str__(self):
     return self.name
 
+  @property
+  def normalized_id(self):
+    """
+    For trading equivalence: treat Special Art Rare (pk 7) and Super Rare (pk 6) as the same.
+    """
+    if self.pk in (6, 7):
+      return 6
+    return self.pk
+
 class Card(models.Model):
   id = models.AutoField(primary_key=True)
   name = models.CharField(max_length=64)
@@ -63,4 +72,12 @@ class Card(models.Model):
   updated_at = models.DateTimeField(auto_now=True)
 
   def __str__(self):
-    return self.name + " " + self.rarity.icons + " " + self.cardset.name
+    # For display, we show the original rarity icons.
+    return f"{self.name} {self.rarity.icons} {self.cardset.name}"
+
+  @property
+  def normalized_rarity(self):
+    """
+    Returns the canonical rarity id for trade logic.
+    """
+    return self.rarity.normalized_id