feat: add ssr

prisma/schema.prisma

@@ -93,6 +93,31 @@ model ProseChapter {
   @@map("prose_chapters")
 }
 
+// ---------------------------------------------------------------------------
+// Essay — standalone essays (not part of any book's chapter structure)
+//
+// slug: URL-friendly identifier (e.g. "krishna-reservoir-of-pleasure")
+// title: essay title
+// author: author name
+// year: publication year
+// group: optional grouping key (e.g. "two-essays" for essays published together)
+// order: sort order within a group
+// paragraphs: array of HTML paragraph strings
+// ---------------------------------------------------------------------------
+model Essay {
+  id         String   @id @default(auto()) @map("_id") @db.ObjectId
+  slug       String   @unique
+  title      String
+  author     String
+  year       Int?
+  group      String?
+  order      Int
+  paragraphs String[]
+
+  @@index([group])
+  @@map("essays")
+}
+
 // ---------------------------------------------------------------------------
 // GlossaryEntry — individual glossary term + definition
 // ---------------------------------------------------------------------------