refactor: use hash directly in authmek and version field on authmek

server/prisma/migrations/20250324014736_add_auth_mek_version/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "LinkedAuthMec" ADD COLUMN     "version" INTEGER NOT NULL DEFAULT 1;

server/prisma/schema/auth.prisma

@@ -7,6 +7,7 @@ model LinkedAuthMec {
     mec     AuthMec
     enabled Boolean @default(true)
 
+    version     Int  @default(1)
     credentials Json
 
     user User @relation(fields: [userId], references: [id])