feat(schema): add gameComments table with threading and upvotes

lib/db/schema/gameComments.ts

@@ -0,0 +1,39 @@
+import {
+  boolean,
+  integer,
+  jsonb,
+  pgTable,
+  text,
+  timestamp,
+  index,
+} from "drizzle-orm/pg-core"
+import { games } from "./games"
+import { user } from "./auth"
+
+export const gameComments = pgTable(
+  "game_comments",
+  {
+    id: text("id")
+      .primaryKey()
+      .$defaultFn(() => crypto.randomUUID()),
+    gameId: text("game_id")
+      .notNull()
+      .references(() => games.id, { onDelete: "cascade" }),
+    userId: text("user_id")
+      .notNull()
+      .references(() => user.id, { onDelete: "cascade" }),
+    parentId: text("parent_id").references((): any => gameComments.id, {
+      onDelete: "cascade",
+    }),
+    // Tiptap JSON document
+    content: jsonb("content").notNull().$type<Record<string, unknown>>(),
+    upvotes: integer("upvotes").default(0).notNull(),
+    isRemoved: boolean("is_removed").default(false).notNull(),
+    createdAt: timestamp("created_at").defaultNow().notNull(),
+    updatedAt: timestamp("updated_at").defaultNow().notNull(),
+  },
+  (table) => [
+    index("comments_game_created_idx").on(table.gameId, table.createdAt),
+    index("comments_parent_idx").on(table.parentId),
+  ],
+)