feat: deprecate email, pre-verify users + documentation

backend/apps/salons/models.py

@@ -56,7 +56,7 @@ class StaffProfile(models.Model):
     is_active = models.BooleanField(default=True)
 
     def __str__(self):
-        return f"{self.user.email} - {self.salon.name}"
+        return f"{self.user.display_name} - {self.salon.name}"
 
 
 class StaffAvailability(models.Model):
@@ -84,7 +84,10 @@ class StaffAvailability(models.Model):
         ordering = ["staff_id", "day_of_week", "start_time"]
 
     def __str__(self):
-        return f"{self.staff.user.email} {self.get_day_of_week_display()} {self.start_time}-{self.end_time}"
+        return (
+            f"{self.staff.user.display_name} {self.get_day_of_week_display()} "
+            f"{self.start_time}-{self.end_time}"
+        )
 
 
 class Review(models.Model):
@@ -95,4 +98,4 @@ class Review(models.Model):
     created_at = models.DateTimeField(auto_now_add=True)
 
     def __str__(self):
-        return f"Review {self.rating} for {self.salon.name}"
+        return f"Review {self.rating} by {self.customer.display_name} for {self.salon.name}"