feat(database): add article summary

Author: wxh06

packages/database/prisma/migrations/20251201082716_article_summary/migration.sql

@@ -0,0 +1,11 @@
+-- CreateTable
+CREATE TABLE "ArticleCopra" (
+    "articleId" TEXT NOT NULL,
+    "summary" TEXT,
+    "tags" JSONB,
+
+    CONSTRAINT "ArticleCopra_pkey" PRIMARY KEY ("articleId")
+);
+
+-- AddForeignKey
+ALTER TABLE "ArticleCopra" ADD CONSTRAINT "ArticleCopra_articleId_fkey" FOREIGN KEY ("articleId") REFERENCES "Article"("lid") ON DELETE RESTRICT ON UPDATE CASCADE;

packages/database/prisma/models/article.prisma

@@ -13,6 +13,8 @@ model Article {
   snapshots ArticleSnapshot[]
   replies   ArticleReply[]
 
+  copra ArticleCopra?
+
   @@index([time])
   @@index([authorId])
   @@index([upvote(sort: Desc)])
@@ -68,3 +70,11 @@ model ArticleReply {
   @@index([authorId])
   @@index([time])
 }
+
+model ArticleCopra {
+  article   Article @relation(fields: [articleId], references: [lid])
+  articleId String  @id
+
+  summary String? @db.Text
+  tags    Json?
+}