♻️ refactor: rewrite OAuth provision business logic for new user schema

prisma/migrations/20260528141807_increate_limit_oauth_token/migration.sql

@@ -0,0 +1,12 @@
+-- DropForeignKey
+ALTER TABLE "user_preferences" DROP CONSTRAINT "user_preferences_char_as_partner_id_fkey";
+
+-- AlterTable
+ALTER TABLE "user_oauth_accounts" ALTER COLUMN "provider_token" SET DATA TYPE TEXT,
+ALTER COLUMN "refresh_token" SET DATA TYPE TEXT;
+
+-- AlterTable
+ALTER TABLE "user_preferences" ALTER COLUMN "char_as_partner_id" DROP NOT NULL;
+
+-- AddForeignKey
+ALTER TABLE "user_preferences" ADD CONSTRAINT "user_preferences_char_as_partner_id_fkey" FOREIGN KEY ("char_as_partner_id") REFERENCES "characters"("id") ON DELETE SET NULL ON UPDATE CASCADE;

prisma/migrations/20260528142420_add_expires_in_session/migration.sql

@@ -0,0 +1,8 @@
+/*
+  Warnings:
+
+  - Added the required column `valid_until` to the `user_sessions` table without a default value. This is not possible if the table is not empty.
+
+*/
+-- AlterTable
+ALTER TABLE "user_sessions" ADD COLUMN     "valid_until" TIMESTAMPTZ NOT NULL;