feat: add granular permissions for editing and payments

claims/models.py

@@ -81,6 +81,10 @@ class Claim(models.Model):
 
     class Meta:
         ordering = ["-created_at"]
+        permissions = [
+            ("mark_claim_paid", _("Can mark claims as paid")),
+            ("edit_claim_details", _("Can edit claim details")),
+        ]
 
     def __str__(self):
         project = f" [{self.project}]" if self.project else ""