fix architecture and write new tests

packages/database/prisma/migrations/20260610001500_add_admin_recovery_codes/migration.sql

@@ -0,0 +1,16 @@
+-- CreateTable
+CREATE TABLE "admin_recovery_codes" (
+    "id" TEXT NOT NULL,
+    "adminUserId" TEXT NOT NULL,
+    "codeHash" TEXT NOT NULL,
+    "usedAt" TIMESTAMP(3),
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "admin_recovery_codes_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "admin_recovery_codes_adminUserId_usedAt_idx" ON "admin_recovery_codes"("adminUserId", "usedAt");
+
+-- AddForeignKey
+ALTER TABLE "admin_recovery_codes" ADD CONSTRAINT "admin_recovery_codes_adminUserId_fkey" FOREIGN KEY ("adminUserId") REFERENCES "admin_users"("id") ON DELETE CASCADE ON UPDATE CASCADE;