ALTER TABLE "accounts" ADD COLUMN "issuer" text;
--> statement-breakpoint
-- Backfill (#1395): better-auth >=1.7 sign-in filters accounts on
-- (provider_id = 'credential' AND issuer = 'local:credential'). Existing
-- credential rows predate the column and would fail that filter on upgraded
-- installs. Credential rows ONLY: better-auth owns issuer semantics for
-- oauth/sso rows going forward (each provider's real issuer value), so those
-- stay NULL until the provider's next flow writes them.
UPDATE "accounts" SET "issuer" = 'local:credential' WHERE "provider_id" = 'credential' AND "issuer" IS NULL;