feat: add VerifyResult enum, verify_only on Task, verify_result on ClaudeJob

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

prisma/migrations/20260501100629_add_verify_result_and_verify_only/migration.sql

@@ -0,0 +1,8 @@
+-- CreateEnum
+CREATE TYPE "VerifyResult" AS ENUM ('ALIGNED', 'PARTIAL', 'EMPTY', 'DIVERGENT');
+
+-- AlterTable
+ALTER TABLE "claude_jobs" ADD COLUMN     "verify_result" "VerifyResult";
+
+-- AlterTable
+ALTER TABLE "tasks" ADD COLUMN     "verify_only" BOOLEAN NOT NULL DEFAULT false;