diff --git a/supabase/migrations/20260807000000_expand_roles.sql b/supabase/migrations/20260807000000_expand_roles.sql
deleted file mode 100644
index a708364..0000000
--- a/supabase/migrations/20260807000000_expand_roles.sql
+++ /dev/null
@@ -1,19 +0,0 @@
--- Role expansion — spec section 3.
---
--- This migration ONLY adds enum values. Postgres forbids using a new enum value
--- in the same transaction that added it, and the Supabase CLI wraps each
--- migration file in one transaction, so every use of these values must live in
--- a later file. Do not add anything else here.
---
--- Existing values ('admin', 'teacher', 'parent') are kept. 'admin' is retained
--- as the legacy organization-wide administrator so the policies written before
--- this migration keep working unchanged; 20260807000100 teaches the role
--- helpers that 'org_admin' and 'super_admin' also satisfy it.
-
-ALTER TYPE public.app_role ADD VALUE IF NOT EXISTS 'super_admin';
-ALTER TYPE public.app_role ADD VALUE IF NOT EXISTS 'org_admin';
-ALTER TYPE public.app_role ADD VALUE IF NOT EXISTS 'campus_admin';
-ALTER TYPE public.app_role ADD VALUE IF NOT EXISTS 'management';
-ALTER TYPE public.app_role ADD VALUE IF NOT EXISTS 'billing_admin';
-ALTER TYPE public.app_role ADD VALUE IF NOT EXISTS 'staff';
-ALTER TYPE public.app_role ADD VALUE IF NOT EXISTS 'auditor';