Add about page

prisma/migrations/20260205135425_about_01/migration.sql

@@ -0,0 +1,10 @@
+-- CreateTable
+CREATE TABLE "About" (
+    "id" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+    "markdown" TEXT NOT NULL,
+    "version" SERIAL NOT NULL,
+
+    CONSTRAINT "About_pkey" PRIMARY KEY ("id")
+);

prisma/schema.prisma

@@ -524,6 +524,15 @@ model TermsOfService {
   version  Int    @default(autoincrement())
 }
 
+model About {
+  id        String   @id @default(cuid())
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+
+  markdown String
+  version  Int    @default(autoincrement())
+}
+
 model User {
   id            String    @id
   name          String