Add display frames and improve create-page page management.

Store phone/tablet/photo-frame shells with catalogs, append pages from extra images or PDFs, and reorder drafts with drag-and-drop.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/schema.ts

@@ -7,5 +7,6 @@ export const catalogsTable = sqliteTable("catalogs", {
   effect: text("effect").notNull(),
   pageCount: integer("page_count").notNull(),
   flipMs: integer("flip_ms").notNull(),
+  frame: text("frame").notNull(),
   createdAt: text("created_at").notNull(),
 });