Thêm tính năng bình luận ở mỗi điểm của chặng

backend/prisma/migrations/20260616005945_/migration.sql

@@ -0,0 +1,16 @@
+-- CreateTable
+CREATE TABLE "Comment" (
+    "id" TEXT NOT NULL,
+    "content" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "locationId" TEXT NOT NULL,
+    "userId" TEXT NOT NULL,
+
+    CONSTRAINT "Comment_pkey" PRIMARY KEY ("id")
+);
+
+-- AddForeignKey
+ALTER TABLE "Comment" ADD CONSTRAINT "Comment_locationId_fkey" FOREIGN KEY ("locationId") REFERENCES "Location"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "Comment" ADD CONSTRAINT "Comment_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE CASCADE ON UPDATE CASCADE;