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>

scripts/migrate-db.ts

@@ -0,0 +1,6 @@
+import { openDatabase } from "../server/db.ts";
+import { loadEnv } from "../server/env.ts";
+
+const env = loadEnv();
+await openDatabase(env.databasePath);
+console.log("Database migrated:", env.databasePath);