init studio auth backend

prisma/migrations/20260601030000_add_login_notices/migration.sql

@@ -0,0 +1,16 @@
+CREATE TABLE "login_notices" (
+  "id" TEXT NOT NULL,
+  "title" TEXT NOT NULL,
+  "body" TEXT NOT NULL,
+  "link_url" TEXT,
+  "is_active" BOOLEAN NOT NULL DEFAULT true,
+  "starts_at" TIMESTAMP(3),
+  "ends_at" TIMESTAMP(3),
+  "priority" INTEGER NOT NULL DEFAULT 0,
+  "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  "updated_at" TIMESTAMP(3) NOT NULL,
+
+  CONSTRAINT "login_notices_pkey" PRIMARY KEY ("id")
+);
+
+CREATE INDEX "login_notices_is_active_priority_idx" ON "login_notices"("is_active", "priority");