chore(prisma): migrate schema to add displayId field in Problem model

prisma/migrations/20250330104040_add_problem_display_id/migration.sql

@@ -0,0 +1,12 @@
+/*
+  Warnings:
+
+  - A unique constraint covering the columns `[displayId]` on the table `Problem` will be added. If there are existing duplicate values, this will fail.
+  - Added the required column `displayId` to the `Problem` table without a default value. This is not possible if the table is not empty.
+
+*/
+-- AlterTable
+ALTER TABLE "Problem" ADD COLUMN     "displayId" INTEGER NOT NULL;
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Problem_displayId_key" ON "Problem"("displayId");