8 Phases refactor

backend/igny8_core/business/planning/models.py

@@ -10,7 +10,7 @@ class Clusters(SiteSectorBaseModel):
         ('mapped', 'Mapped'),
     ]
 
-    name = models.CharField(max_length=255, unique=True, db_index=True)
+    name = models.CharField(max_length=255, db_index=True)
     description = models.TextField(blank=True, null=True)
     keywords_count = models.IntegerField(default=0)
     volume = models.IntegerField(default=0)
@@ -26,6 +26,7 @@ class Clusters(SiteSectorBaseModel):
         ordering = ['name']
         verbose_name = 'Cluster'
         verbose_name_plural = 'Clusters'
+        unique_together = [['name', 'site', 'sector']]  # Unique per site/sector
         indexes = [
             models.Index(fields=['name']),
             models.Index(fields=['status']),