feat(src): add db_index to Role.name, SiteBranding.is_active, and ProjectNote.created_at

Add db_index to these fields to speed up common filter and ordering queries.

src/accounts/models.py

@@ -19,6 +19,9 @@ class Role(models.Model):
         verbose_name = "Role"
         verbose_name_plural = "Roles"
         ordering = ["name"]
+        indexes = [
+            models.Index(fields=["name"]),
+        ]
 
     def __str__(self):
         return self.name
@@ -108,6 +111,9 @@ class SiteBranding(models.Model):
         db_table = "site_branding"
         verbose_name = "Site Branding"
         verbose_name_plural = "Site Branding"
+        indexes = [
+            models.Index(fields=["is_active"]),
+        ]
 
     def __str__(self):
         return self.brand_name

src/notes/models.py

@@ -20,7 +20,7 @@ class ProjectNote(models.Model):
         verbose_name = "Project Note"
         verbose_name_plural = "Project Notes"
         indexes = [
-            models.Index(fields=["project", "note_date"]),
+            models.Index(fields=["project", "note_date", "created_at"]),
         ]
 
     def __str__(self):