🚧 wip: rewrite reprovision logic to match new user schema

prisma/migrations/20260528094932_remove_duplicate_oauth_activity_report/migration.sql

@@ -0,0 +1,8 @@
+/*
+  Warnings:
+
+  - You are about to drop the column `last_login` on the `user_oauth_accounts` table. All the data in the column will be lost.
+
+*/
+-- AlterTable
+ALTER TABLE "user_oauth_accounts" DROP COLUMN "last_login";