rebrand to useSend (#210)

apps/web/prisma/migrations/20250901091500_add_dkim_selector/migration.sql

@@ -0,0 +1,9 @@
+-- Add dkimSelector column (nullable) with default 'usesend'
+ALTER TABLE "Domain" ADD COLUMN "dkimSelector" TEXT;
+
+-- Set existing rows to 'unsend' to preserve current selector
+UPDATE "Domain" SET "dkimSelector" = 'unsend' WHERE "dkimSelector" IS NULL;
+
+-- Set default for new rows to 'usesend'
+ALTER TABLE "Domain" ALTER COLUMN "dkimSelector" SET DEFAULT 'usesend';
+

apps/web/prisma/schema.prisma

@@ -181,6 +181,7 @@ model Domain {
   clickTracking Boolean      @default(false)
   openTracking  Boolean      @default(false)
   publicKey     String
+  dkimSelector  String?      @default("usesend")
   dkimStatus    String?
   spfDetails    String?
   dmarcAdded    Boolean      @default(false)