Added programmer role and fixed snackbar not showing

supabase/migrations/20260316080000_add_programmer_role_enum.sql

@@ -0,0 +1,6 @@
+-- Add `programmer` to the `user_role` enum.
+--
+-- This is used by the application for role-based access checks. It must be
+-- committed before any other schema objects (e.g., RLS policies) reference it.
+
+ALTER TYPE user_role ADD VALUE IF NOT EXISTS 'programmer';